./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s12if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:08:14,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:08:14,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:08:14,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:08:14,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:08:14,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:08:14,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:08:14,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:08:14,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:08:14,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:08:14,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:08:14,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:08:14,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:08:14,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:08:14,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:08:14,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:08:14,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:08:14,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:08:14,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:08:14,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:08:14,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:08:14,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:08:14,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:08:14,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:08:14,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:08:14,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:08:14,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:08:14,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:08:14,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:08:14,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:08:14,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:08:14,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:08:14,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:08:14,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:08:14,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:08:14,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:08:14,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:08:14,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:08:14,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:08:14,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:08:14,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:08:14,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:08:14,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:08:14,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:08:14,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:08:14,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:08:14,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:08:14,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:08:14,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:08:14,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:08:14,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:08:14,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:08:14,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:08:14,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:08:14,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:08:14,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:08:14,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:08:14,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:08:14,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:08:14,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:08:14,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:08:14,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:08:14,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:08:14,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:08:14,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:08:14,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:08:14,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:08:14,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:08:14,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:08:14,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:08:14,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:08:14,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:08:14,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:08:14,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:08:14,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:08:14,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:08:14,971 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 [2022-11-23 03:08:15,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:08:15,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:08:15,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:08:15,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:08:15,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:08:15,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/array-fpi/s12if.c [2022-11-23 03:08:18,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:08:18,787 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:08:18,787 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/sv-benchmarks/c/array-fpi/s12if.c [2022-11-23 03:08:18,794 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/data/bdc5eb4f5/2cfe9dfd7ae0439bb95cc028b877a43c/FLAG54929cb37 [2022-11-23 03:08:18,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/data/bdc5eb4f5/2cfe9dfd7ae0439bb95cc028b877a43c [2022-11-23 03:08:18,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:08:18,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:08:18,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:08:18,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:08:18,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:08:18,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2022-11-23 03:08:18,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ff6df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18, skipping insertion in model container [2022-11-23 03:08:18,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2022-11-23 03:08:18,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:08:18,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:08:18,990 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2022-11-23 03:08:19,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:08:19,022 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:08:19,036 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2022-11-23 03:08:19,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:08:19,059 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:08:19,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19 WrapperNode [2022-11-23 03:08:19,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:08:19,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:08:19,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:08:19,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:08:19,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,098 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-23 03:08:19,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:08:19,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:08:19,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:08:19,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:08:19,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:08:19,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:08:19,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:08:19,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:08:19,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2022-11-23 03:08:19,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:08:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:19,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:08:19,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:08:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:08:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:08:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:08:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:08:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:08:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:08:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:08:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:08:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:08:19,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:08:19,302 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:08:19,486 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:08:19,494 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:08:19,494 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 03:08:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:19 BoogieIcfgContainer [2022-11-23 03:08:19,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:08:19,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:08:19,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:08:19,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:08:19,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:18" (1/3) ... [2022-11-23 03:08:19,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dbe530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:19, skipping insertion in model container [2022-11-23 03:08:19,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (2/3) ... [2022-11-23 03:08:19,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dbe530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:19, skipping insertion in model container [2022-11-23 03:08:19,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:19" (3/3) ... [2022-11-23 03:08:19,508 INFO L112 eAbstractionObserver]: Analyzing ICFG s12if.c [2022-11-23 03:08:19,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:08:19,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:08:19,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:08:19,696 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;@7ce854d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:08:19,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:08:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 03:08:19,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:19,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:19,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2022-11-23 03:08:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96012849] [2022-11-23 03:08:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:20,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96012849] [2022-11-23 03:08:20,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96012849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:20,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:20,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:08:20,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038395334] [2022-11-23 03:08:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:08:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:08:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:08:20,064 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:20,096 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-23 03:08:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:08:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 03:08:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:20,108 INFO L225 Difference]: With dead ends: 42 [2022-11-23 03:08:20,108 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 03:08:20,111 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 [2022-11-23 03:08:20,116 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 [2022-11-23 03:08:20,118 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] [2022-11-23 03:08:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 03:08:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 03:08:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2022-11-23 03:08:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-23 03:08:20,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2022-11-23 03:08:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:20,158 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-23 03:08:20,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-23 03:08:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 03:08:20,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:20,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:20,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:08:20,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2022-11-23 03:08:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:20,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584190046] [2022-11-23 03:08:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:20,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:20,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584190046] [2022-11-23 03:08:20,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584190046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:08:20,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:08:20,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:08:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139025186] [2022-11-23 03:08:20,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:08:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:08:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:08:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:08:20,471 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:20,588 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-11-23 03:08:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:08:20,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 03:08:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:20,590 INFO L225 Difference]: With dead ends: 39 [2022-11-23 03:08:20,590 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 03:08:20,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:08:20,592 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:20,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:08:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 03:08:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-23 03:08:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 03:08:20,606 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-23 03:08:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 03:08:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 03:08:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:08:20,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:20,612 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] [2022-11-23 03:08:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:08:20,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2022-11-23 03:08:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:20,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977928511] [2022-11-23 03:08:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:21,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:21,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977928511] [2022-11-23 03:08:21,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977928511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:21,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977751888] [2022-11-23 03:08:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:21,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:21,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:08:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:21,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 03:08:21,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:21,782 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 [2022-11-23 03:08:21,800 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 [2022-11-23 03:08:21,864 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 14 treesize of output 16 [2022-11-23 03:08:22,023 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 14 treesize of output 16 [2022-11-23 03:08:22,132 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 44 treesize of output 27 [2022-11-23 03:08:22,267 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 51 treesize of output 23 [2022-11-23 03:08:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:22,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:22,459 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_45 (Array Int Int))) (let ((.cse0 (select v_ArrVal_45 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (or (not (= 2 .cse0)) (= (* c_~N~0 2) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0))))) is different from false [2022-11-23 03:08:22,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:08:22,666 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-23 03:08:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 03:08:22,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-23 03:08:22,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-23 03:08:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-23 03:08:22,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977751888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:22,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:08:22,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2022-11-23 03:08:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62353961] [2022-11-23 03:08:22,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:22,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:08:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:08:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=357, Unknown=1, NotChecked=40, Total=506 [2022-11-23 03:08:22,747 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:35,457 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-11-23 03:08:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:08:35,458 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 21 [2022-11-23 03:08:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:35,461 INFO L225 Difference]: With dead ends: 48 [2022-11-23 03:08:35,461 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 03:08:35,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=284, Invalid=840, Unknown=2, NotChecked=64, Total=1190 [2022-11-23 03:08:35,466 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 140 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:35,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 41 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 248 Invalid, 1 Unknown, 42 Unchecked, 0.8s Time] [2022-11-23 03:08:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 03:08:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-11-23 03:08:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-23 03:08:35,493 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2022-11-23 03:08:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:35,494 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-23 03:08:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-23 03:08:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:08:35,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:35,498 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] [2022-11-23 03:08:35,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:35,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 03:08:35,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2022-11-23 03:08:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:35,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450232668] [2022-11-23 03:08:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:35,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:35,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:08:35,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937227388] [2022-11-23 03:08:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:35,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:35,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:35,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:08:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:08:35,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:35,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 03:08:36,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:08:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:36,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:36,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2022-11-23 03:08:36,310 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-23 03:08:36,310 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 38 treesize of output 24 [2022-11-23 03:08:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450232668] [2022-11-23 03:08:36,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:08:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937227388] [2022-11-23 03:08:36,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937227388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:36,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:36,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-23 03:08:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885033653] [2022-11-23 03:08:36,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:36,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:08:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:08:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:08:36,355 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:36,986 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2022-11-23 03:08:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:08:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 21 [2022-11-23 03:08:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:36,988 INFO L225 Difference]: With dead ends: 77 [2022-11-23 03:08:36,989 INFO L226 Difference]: Without dead ends: 65 [2022-11-23 03:08:36,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:08:36,990 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:36,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 63 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:08:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-23 03:08:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2022-11-23 03:08:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 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) [2022-11-23 03:08:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-23 03:08:37,006 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2022-11-23 03:08:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-23 03:08:37,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-23 03:08:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:08:37,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:37,009 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] [2022-11-23 03:08:37,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:37,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times [2022-11-23 03:08:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:37,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145292153] [2022-11-23 03:08:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:37,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:08:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173944054] [2022-11-23 03:08:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:37,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:37,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:37,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:08:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 03:08:37,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:37,393 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 [2022-11-23 03:08:37,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:08:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:37,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:37,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 03:08:37,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-23 03:08:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:37,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145292153] [2022-11-23 03:08:37,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:08:37,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173944054] [2022-11-23 03:08:37,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173944054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:37,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:37,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-23 03:08:37,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396029336] [2022-11-23 03:08:37,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:08:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:08:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:08:37,655 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-11-23 03:08:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:37,970 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2022-11-23 03:08:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:08:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) Word has length 21 [2022-11-23 03:08:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:37,972 INFO L225 Difference]: With dead ends: 78 [2022-11-23 03:08:37,972 INFO L226 Difference]: Without dead ends: 57 [2022-11-23 03:08:37,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:08:37,974 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:37,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:08:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-23 03:08:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2022-11-23 03:08:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2022-11-23 03:08:37,989 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2022-11-23 03:08:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:37,989 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2022-11-23 03:08:37,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-11-23 03:08:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2022-11-23 03:08:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 03:08:37,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:37,991 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] [2022-11-23 03:08:38,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:38,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2022-11-23 03:08:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595242534] [2022-11-23 03:08:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:38,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:38,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595242534] [2022-11-23 03:08:38,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595242534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:38,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652380992] [2022-11-23 03:08:38,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:08:38,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:38,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:38,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:08:38,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:08:38,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:38,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:08:38,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:38,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652380992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:38,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:08:38,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-23 03:08:38,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974104606] [2022-11-23 03:08:38,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:38,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:08:38,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:08:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:08:38,889 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) [2022-11-23 03:08:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:39,433 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-23 03:08:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:08:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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 23 [2022-11-23 03:08:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:39,435 INFO L225 Difference]: With dead ends: 85 [2022-11-23 03:08:39,435 INFO L226 Difference]: Without dead ends: 75 [2022-11-23 03:08:39,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:08:39,436 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:39,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 28 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:08:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-23 03:08:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2022-11-23 03:08:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-23 03:08:39,469 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2022-11-23 03:08:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:39,470 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-23 03:08:39,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) [2022-11-23 03:08:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-23 03:08:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 03:08:39,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:39,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:39,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:39,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 03:08:39,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2022-11-23 03:08:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:39,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625154067] [2022-11-23 03:08:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625154067] [2022-11-23 03:08:39,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625154067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430634174] [2022-11-23 03:08:39,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:08:39,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:39,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:39,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:39,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:08:39,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 03:08:39,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:39,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:08:39,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:40,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:08:40,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430634174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:40,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:08:40,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-23 03:08:40,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493842417] [2022-11-23 03:08:40,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:08:40,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:08:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:08:40,296 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:40,619 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-11-23 03:08:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:08:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 24 [2022-11-23 03:08:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:40,621 INFO L225 Difference]: With dead ends: 78 [2022-11-23 03:08:40,621 INFO L226 Difference]: Without dead ends: 42 [2022-11-23 03:08:40,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:08:40,623 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 26 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:08:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-23 03:08:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-23 03:08:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2022-11-23 03:08:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-23 03:08:40,646 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2022-11-23 03:08:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:40,646 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-23 03:08:40,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-23 03:08:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 03:08:40,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:40,650 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] [2022-11-23 03:08:40,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:40,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:40,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2022-11-23 03:08:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:40,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671987636] [2022-11-23 03:08:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:08:42,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671987636] [2022-11-23 03:08:42,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671987636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142108245] [2022-11-23 03:08:42,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:08:42,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:42,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:42,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:08:42,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:08:42,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 03:08:42,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:42,881 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 [2022-11-23 03:08:42,898 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 [2022-11-23 03:08:42,989 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 14 treesize of output 16 [2022-11-23 03:08:43,088 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 14 treesize of output 16 [2022-11-23 03:08:43,401 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 14 treesize of output 16 [2022-11-23 03:08:43,570 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 14 treesize of output 16 [2022-11-23 03:08:43,820 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 44 treesize of output 27 [2022-11-23 03:08:44,108 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:08:44,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-23 03:08:44,352 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:08:44,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 32 [2022-11-23 03:08:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:44,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:45,155 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (= (+ .cse0 .cse1 .cse2) (* c_~N~0 2)) (not (= 2 .cse1)) (not (= 2 .cse2)))))))) is different from false [2022-11-23 03:08:45,196 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (= (+ .cse0 .cse1 .cse2) (* c_~N~0 2)) (not (= 2 .cse1)) (not (= 2 .cse2)))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) is different from false [2022-11-23 03:08:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 03:08:46,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142108245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:46,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:08:46,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 38 [2022-11-23 03:08:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240084570] [2022-11-23 03:08:46,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-23 03:08:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-23 03:08:46,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1126, Unknown=5, NotChecked=138, Total=1406 [2022-11-23 03:08:46,846 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:56,984 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2022-11-23 03:08:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 03:08:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 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 29 [2022-11-23 03:08:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:56,986 INFO L225 Difference]: With dead ends: 83 [2022-11-23 03:08:56,986 INFO L226 Difference]: Without dead ends: 79 [2022-11-23 03:08:56,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=435, Invalid=2756, Unknown=9, NotChecked=222, Total=3422 [2022-11-23 03:08:56,989 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 129 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:56,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 157 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 784 Invalid, 30 Unknown, 113 Unchecked, 2.7s Time] [2022-11-23 03:08:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-23 03:08:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2022-11-23 03:08:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2022-11-23 03:08:57,008 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 29 [2022-11-23 03:08:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:57,008 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2022-11-23 03:08:57,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2022-11-23 03:08:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 03:08:57,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:57,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:57,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:57,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:57,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2022-11-23 03:08:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010433891] [2022-11-23 03:08:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:57,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:08:57,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042333562] [2022-11-23 03:08:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:57,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:57,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:57,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:57,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:08:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:57,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 03:08:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:57,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-23 03:08:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:08:57,715 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 16 treesize of output 18 [2022-11-23 03:08:57,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:08:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:08:57,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:57,909 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2022-11-23 03:08:57,928 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2022-11-23 03:08:58,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:08:58,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-23 03:08:58,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:08:58,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-23 03:08:58,040 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 7 treesize of output 3 [2022-11-23 03:08:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2022-11-23 03:08:58,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:58,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010433891] [2022-11-23 03:08:58,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:08:58,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042333562] [2022-11-23 03:08:58,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042333562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:58,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:58,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-23 03:08:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680392559] [2022-11-23 03:08:58,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 03:08:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 03:08:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=217, Unknown=2, NotChecked=62, Total=342 [2022-11-23 03:08:58,213 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:59,288 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2022-11-23 03:08:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 03:08:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2022-11-23 03:08:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:59,290 INFO L225 Difference]: With dead ends: 116 [2022-11-23 03:08:59,290 INFO L226 Difference]: Without dead ends: 109 [2022-11-23 03:08:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=363, Unknown=2, NotChecked=82, Total=552 [2022-11-23 03:08:59,291 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 79 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 319 Invalid, 0 Unknown, 118 Unchecked, 0.7s Time] [2022-11-23 03:08:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-23 03:08:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2022-11-23 03:08:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-11-23 03:08:59,315 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 29 [2022-11-23 03:08:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-11-23 03:08:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-11-23 03:08:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 03:08:59,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:59,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:59,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:59,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 03:08:59,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2022-11-23 03:08:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782696792] [2022-11-23 03:08:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:59,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:08:59,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180695756] [2022-11-23 03:08:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:59,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:08:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:59,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 03:08:59,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:59,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 03:08:59,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:08:59,826 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 25 treesize of output 24 [2022-11-23 03:08:59,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:08:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:08:59,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:00,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-23 03:09:00,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-23 03:09:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782696792] [2022-11-23 03:09:00,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:09:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180695756] [2022-11-23 03:09:00,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180695756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:00,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:09:00,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-23 03:09:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17516605] [2022-11-23 03:09:00,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:09:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:09:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:09:00,128 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2022-11-23 03:09:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:00,636 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2022-11-23 03:09:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:09:00,637 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) Word has length 29 [2022-11-23 03:09:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:00,638 INFO L225 Difference]: With dead ends: 115 [2022-11-23 03:09:00,638 INFO L226 Difference]: Without dead ends: 84 [2022-11-23 03:09:00,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:09:00,639 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:00,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 65 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:09:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-23 03:09:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2022-11-23 03:09:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2022-11-23 03:09:00,671 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 29 [2022-11-23 03:09:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:00,671 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2022-11-23 03:09:00,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2022-11-23 03:09:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2022-11-23 03:09:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 03:09:00,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:00,674 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] [2022-11-23 03:09:00,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:09:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 03:09:00,879 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2022-11-23 03:09:00,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:00,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725612188] [2022-11-23 03:09:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:01,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725612188] [2022-11-23 03:09:01,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725612188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:09:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272070343] [2022-11-23 03:09:01,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:09:01,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:09:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:09:01,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:09:01,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:09:01,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-23 03:09:01,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:09:01,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:09:01,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:09:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:01,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:01,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272070343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:01,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:09:01,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-23 03:09:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382851693] [2022-11-23 03:09:01,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:09:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:01,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:09:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:09:01,592 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2022-11-23 03:09:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:02,389 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2022-11-23 03:09:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:09:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-23 03:09:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:02,391 INFO L225 Difference]: With dead ends: 121 [2022-11-23 03:09:02,391 INFO L226 Difference]: Without dead ends: 108 [2022-11-23 03:09:02,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:09:02,394 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:02,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 31 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 03:09:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-23 03:09:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2022-11-23 03:09:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2022-11-23 03:09:02,418 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 31 [2022-11-23 03:09:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:02,419 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2022-11-23 03:09:02,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2022-11-23 03:09:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2022-11-23 03:09:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 03:09:02,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:02,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:09:02,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:09:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:09:02,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2022-11-23 03:09:02,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:02,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968077034] [2022-11-23 03:09:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:02,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:02,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968077034] [2022-11-23 03:09:02,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968077034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:09:02,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67336600] [2022-11-23 03:09:02,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:09:02,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:09:02,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:09:02,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:09:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 03:09:02,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-23 03:09:02,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:09:02,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:09:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:09:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:03,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:09:03,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67336600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:03,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:09:03,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-23 03:09:03,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652277384] [2022-11-23 03:09:03,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:09:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:09:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:09:03,406 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:09:03,798 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2022-11-23 03:09:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:09:03,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 32 [2022-11-23 03:09:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:09:03,804 INFO L225 Difference]: With dead ends: 109 [2022-11-23 03:09:03,804 INFO L226 Difference]: Without dead ends: 53 [2022-11-23 03:09:03,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:09:03,806 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:09:03,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 29 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:09:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-23 03:09:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2022-11-23 03:09:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-23 03:09:03,821 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 32 [2022-11-23 03:09:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:09:03,822 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-23 03:09:03,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-23 03:09:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:09:03,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:09:03,823 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] [2022-11-23 03:09:03,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:09:04,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 03:09:04,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:09:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2022-11-23 03:09:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:09:04,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569997664] [2022-11-23 03:09:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:09:04,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:09:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 03:09:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:09:06,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569997664] [2022-11-23 03:09:06,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569997664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:09:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021998000] [2022-11-23 03:09:06,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:09:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:09:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:09:06,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:09:06,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 03:09:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:06,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-23 03:09:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:09:06,547 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 [2022-11-23 03:09:06,563 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 [2022-11-23 03:09:06,670 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 14 treesize of output 16 [2022-11-23 03:09:06,807 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 14 treesize of output 16 [2022-11-23 03:09:06,929 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 14 treesize of output 16 [2022-11-23 03:09:07,203 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 14 treesize of output 16 [2022-11-23 03:09:07,247 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 14 treesize of output 16 [2022-11-23 03:09:07,289 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 14 treesize of output 16 [2022-11-23 03:09:07,458 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 44 treesize of output 27 [2022-11-23 03:09:07,708 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:09:07,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-23 03:09:08,000 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:09:08,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-23 03:09:08,230 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:09:08,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2022-11-23 03:09:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:09:08,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:09,621 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_131| Int) (|v_ULTIMATE.start_main_~i~0#1_129| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_131| 4))))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= .cse2 2)) (= (+ .cse0 .cse2 .cse1 .cse3) (* c_~N~0 2))))))))) is different from false [2022-11-23 03:09:11,391 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 03:09:11,391 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 407 treesize of output 1 [2022-11-23 03:09:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 5 not checked. [2022-11-23 03:09:11,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021998000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:11,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:09:11,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 46 [2022-11-23 03:09:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059066901] [2022-11-23 03:09:11,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 03:09:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 03:09:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1782, Unknown=2, NotChecked=86, Total=2070 [2022-11-23 03:09:11,396 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:46,101 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 110 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:10:04,733 WARN L233 SmtUtils]: Spent 14.18s on a formula simplification. DAG size of input: 98 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:10:19,114 WARN L233 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 100 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:10:21,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:10:23,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:10:25,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:10:27,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:10:29,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:10:31,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:10:48,261 WARN L233 SmtUtils]: Spent 14.29s on a formula simplification. DAG size of input: 112 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:10:50,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:11:11,621 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 103 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:11:13,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:11:16,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:11:18,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:11:20,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:11:22,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:11:24,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:11:40,812 WARN L233 SmtUtils]: Spent 14.41s on a formula simplification. DAG size of input: 113 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:11:43,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:12:02,799 WARN L233 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 85 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:12:15,244 WARN L233 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 85 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:12:17,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:12:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:25,145 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2022-11-23 03:12:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 03:12:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-23 03:12:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:25,147 INFO L225 Difference]: With dead ends: 133 [2022-11-23 03:12:25,147 INFO L226 Difference]: Without dead ends: 129 [2022-11-23 03:12:25,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 163.8s TimeCoverageRelationStatistics Valid=961, Invalid=6855, Unknown=20, NotChecked=174, Total=8010 [2022-11-23 03:12:25,151 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 271 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 198 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:25,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 192 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1316 Invalid, 23 Unknown, 74 Unchecked, 33.9s Time] [2022-11-23 03:12:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-23 03:12:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 93. [2022-11-23 03:12:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.25) internal successors, (115), 92 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2022-11-23 03:12:25,183 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 37 [2022-11-23 03:12:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:25,183 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2022-11-23 03:12:25,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2022-11-23 03:12:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:12:25,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:25,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:25,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2022-11-23 03:12:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:25,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251003652] [2022-11-23 03:12:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:25,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:25,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620539647] [2022-11-23 03:12:25,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:12:25,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:25,405 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:25,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 03:12:25,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:12:25,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:25,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 03:12:25,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:25,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-23 03:12:26,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:12:26,097 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 16 treesize of output 18 [2022-11-23 03:12:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:12:26,224 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 16 treesize of output 18 [2022-11-23 03:12:26,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:12:26,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-23 03:12:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:26,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:34,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:12:34,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2022-11-23 03:12:34,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:12:34,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-11-23 03:12:34,663 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 13 treesize of output 7 [2022-11-23 03:12:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:12:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251003652] [2022-11-23 03:12:35,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:35,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620539647] [2022-11-23 03:12:35,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620539647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:35,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:35,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-23 03:12:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719501513] [2022-11-23 03:12:35,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 03:12:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 03:12:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=918, Unknown=4, NotChecked=0, Total=1122 [2022-11-23 03:12:35,603 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:40,157 INFO L93 Difference]: Finished difference Result 263 states and 341 transitions. [2022-11-23 03:12:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 03:12:40,157 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-23 03:12:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:40,163 INFO L225 Difference]: With dead ends: 263 [2022-11-23 03:12:40,163 INFO L226 Difference]: Without dead ends: 256 [2022-11-23 03:12:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=677, Invalid=2511, Unknown=4, NotChecked=0, Total=3192 [2022-11-23 03:12:40,165 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 395 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 69 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 03:12:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-23 03:12:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 157. [2022-11-23 03:12:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3012820512820513) internal successors, (203), 156 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2022-11-23 03:12:40,213 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 37 [2022-11-23 03:12:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:40,213 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2022-11-23 03:12:40,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2022-11-23 03:12:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:12:40,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:40,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:40,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:12:40,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2022-11-23 03:12:40,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:40,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640873444] [2022-11-23 03:12:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:40,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:40,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733288211] [2022-11-23 03:12:40,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:12:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:40,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:40,432 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:40,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 03:12:40,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:12:40,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:40,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 03:12:40,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:40,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 03:12:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:12:40,781 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 25 treesize of output 24 [2022-11-23 03:12:40,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:12:40,874 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 25 treesize of output 24 [2022-11-23 03:12:40,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:12:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:40,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:41,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-23 03:12:41,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-23 03:12:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:41,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:41,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640873444] [2022-11-23 03:12:41,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:41,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733288211] [2022-11-23 03:12:41,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733288211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:41,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:41,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-23 03:12:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413259873] [2022-11-23 03:12:41,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:12:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:12:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:12:41,261 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:42,104 INFO L93 Difference]: Finished difference Result 276 states and 365 transitions. [2022-11-23 03:12:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:12:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-23 03:12:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:42,106 INFO L225 Difference]: With dead ends: 276 [2022-11-23 03:12:42,106 INFO L226 Difference]: Without dead ends: 187 [2022-11-23 03:12:42,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-23 03:12:42,108 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 03:12:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-23 03:12:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 157. [2022-11-23 03:12:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.2884615384615385) internal successors, (201), 156 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2022-11-23 03:12:42,164 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 37 [2022-11-23 03:12:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:42,165 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2022-11-23 03:12:42,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2022-11-23 03:12:42,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 03:12:42,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:42,166 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] [2022-11-23 03:12:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:42,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:42,372 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2022-11-23 03:12:42,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:42,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337549408] [2022-11-23 03:12:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:42,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:42,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:42,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337549408] [2022-11-23 03:12:42,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337549408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:42,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202117681] [2022-11-23 03:12:42,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:12:42,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:42,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:42,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:42,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 03:12:42,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:12:42,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:42,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:12:42,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:43,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:43,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202117681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:43,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:12:43,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-23 03:12:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728867264] [2022-11-23 03:12:43,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:12:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:12:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:12:43,318 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2022-11-23 03:12:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:44,280 INFO L93 Difference]: Finished difference Result 212 states and 274 transitions. [2022-11-23 03:12:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:12:44,282 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) Word has length 39 [2022-11-23 03:12:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:44,283 INFO L225 Difference]: With dead ends: 212 [2022-11-23 03:12:44,283 INFO L226 Difference]: Without dead ends: 196 [2022-11-23 03:12:44,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:12:44,285 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 112 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 03:12:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-23 03:12:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 108. [2022-11-23 03:12:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 107 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2022-11-23 03:12:44,327 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 39 [2022-11-23 03:12:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:44,327 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2022-11-23 03:12:44,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2022-11-23 03:12:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2022-11-23 03:12:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 03:12:44,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:44,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:44,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 03:12:44,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2022-11-23 03:12:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:44,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891158652] [2022-11-23 03:12:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:44,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891158652] [2022-11-23 03:12:44,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891158652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951406093] [2022-11-23 03:12:44,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:12:44,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:44,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:44,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 03:12:45,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 03:12:45,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:45,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:12:45,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:45,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:45,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951406093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:45,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:12:45,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-23 03:12:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698833016] [2022-11-23 03:12:45,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:45,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:12:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:12:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:12:45,669 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:46,237 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2022-11-23 03:12:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 03:12:46,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 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 40 [2022-11-23 03:12:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:46,238 INFO L225 Difference]: With dead ends: 137 [2022-11-23 03:12:46,238 INFO L226 Difference]: Without dead ends: 61 [2022-11-23 03:12:46,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-23 03:12:46,239 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:46,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 29 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:12:46,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-23 03:12:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2022-11-23 03:12:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2022-11-23 03:12:46,259 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 40 [2022-11-23 03:12:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:46,259 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2022-11-23 03:12:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2022-11-23 03:12:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 03:12:46,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:46,260 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] [2022-11-23 03:12:46,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:46,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 03:12:46,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2022-11-23 03:12:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:46,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487401274] [2022-11-23 03:12:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:12:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487401274] [2022-11-23 03:12:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487401274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365740306] [2022-11-23 03:12:49,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:12:49,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:49,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:49,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 03:12:49,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:12:49,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:49,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-23 03:12:49,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:49,529 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 [2022-11-23 03:12:49,537 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 [2022-11-23 03:12:49,561 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 14 treesize of output 16 [2022-11-23 03:12:49,665 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 14 treesize of output 16 [2022-11-23 03:12:49,789 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 14 treesize of output 16 [2022-11-23 03:12:49,916 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 14 treesize of output 16 [2022-11-23 03:12:50,208 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 14 treesize of output 16 [2022-11-23 03:12:50,250 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 14 treesize of output 16 [2022-11-23 03:12:50,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 03:12:50,346 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 14 treesize of output 16 [2022-11-23 03:12:50,513 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 44 treesize of output 27 [2022-11-23 03:12:50,779 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:12:50,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-23 03:12:51,120 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:12:51,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-23 03:12:51,498 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:12:51,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-23 03:12:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:12:51,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:58,140 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_226| Int) (v_ArrVal_736 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse0 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= .cse0 2)) (= (* c_~N~0 2) (+ .cse1 .cse2 .cse0 .cse3 .cse4)) (not (= 2 .cse4)) (not (= 2 .cse3)) (not (= .cse2 2)))))))))) is different from false [2022-11-23 03:12:59,875 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse0 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (not (= 2 .cse1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse1 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= 2 .cse2)) (< (+ .cse3 1) (+ .cse4 .cse5 .cse1 .cse0 .cse2)))))))) (not (= .cse5 2))))))))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse8 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse11 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (not (= .cse9 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse10 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse9 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse12 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse9 .cse10 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (< (+ .cse11 .cse9 .cse10 .cse8 .cse12) (+ .cse3 3)) (not (= 2 .cse12))))))))))))))))))) is different from false [2022-11-23 03:13:00,031 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse3 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (< (+ .cse0 .cse1 .cse2 .cse3 .cse4) (+ .cse5 5)) (not (= 2 .cse4))))) (not (= 2 .cse2))))) (not (= .cse1 2)))))))) (not (= 2 .cse3))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse8 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse10 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (not (= .cse9 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse11 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse9 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse12 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse9 .cse11 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (< (+ .cse5 3) (+ .cse10 .cse9 .cse11 .cse8 .cse12)) (not (= 2 .cse12))))) (not (= 2 .cse11)))))))))))))))) is different from false [2022-11-23 03:13:00,305 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse5 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (not (= .cse0 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= 2 .cse1)) (< (+ .cse2 5) (+ .cse3 .cse0 .cse4 .cse5 .cse1))))) (not (= 2 .cse4))))))))))) (not (= 2 .cse5))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse12 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse10 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= 2 .cse9)) (< (+ .cse10 .cse11 .cse8 .cse12 .cse9) (+ .cse2 7)))))))) (not (= .cse11 2)))))))) (not (= 2 .cse12))))))) is different from false [2022-11-23 03:13:00,580 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse0 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= 2 .cse2)) (< (+ .cse3 7) (+ .cse4 .cse1 .cse5 .cse0 .cse2))))) (not (= 2 .cse5)))))))))))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_736 (Array Int Int))) (let ((.cse12 (select v_ArrVal_736 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_236| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_736))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_226| Int)) (let ((.cse11 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_226| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_224| Int)) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_224| 4))))) (or (not (= 2 .cse8)) (< (+ .cse9 .cse10 .cse11 .cse12 .cse8) (+ .cse3 9))))) (not (= 2 .cse11))))) (not (= .cse10 2)))))))) (not (= 2 .cse12))))))) is different from false [2022-11-23 03:13:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 23 not checked. [2022-11-23 03:13:00,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365740306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:13:00,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:13:00,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 19] total 52 [2022-11-23 03:13:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685057788] [2022-11-23 03:13:00,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:13:00,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-23 03:13:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:13:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-23 03:13:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1990, Unknown=8, NotChecked=470, Total=2652 [2022-11-23 03:13:00,795 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 52 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 52 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:08,777 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 127 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:13:27,655 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 66 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:13:41,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:13:47,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:13:49,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:13:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:13:52,359 INFO L93 Difference]: Finished difference Result 155 states and 181 transitions. [2022-11-23 03:13:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 03:13:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 52 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-23 03:13:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:13:52,361 INFO L225 Difference]: With dead ends: 155 [2022-11-23 03:13:52,362 INFO L226 Difference]: Without dead ends: 151 [2022-11-23 03:13:52,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=657, Invalid=5993, Unknown=12, NotChecked=820, Total=7482 [2022-11-23 03:13:52,364 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 191 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 182 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:13:52,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 307 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1507 Invalid, 17 Unknown, 337 Unchecked, 11.2s Time] [2022-11-23 03:13:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-23 03:13:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2022-11-23 03:13:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.2478632478632479) internal successors, (146), 117 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2022-11-23 03:13:52,420 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 45 [2022-11-23 03:13:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:13:52,420 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2022-11-23 03:13:52,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 52 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2022-11-23 03:13:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 03:13:52,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:13:52,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:13:52,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 03:13:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 03:13:52,628 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:13:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:13:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 3 times [2022-11-23 03:13:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:13:52,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788777769] [2022-11-23 03:13:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:13:52,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:13:52,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:13:52,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863394092] [2022-11-23 03:13:52,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:13:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:13:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:13:52,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:13:52,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 03:13:52,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 03:13:52,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:13:52,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 03:13:52,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:13:53,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-23 03:13:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:13:53,248 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 18 treesize of output 20 [2022-11-23 03:13:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:13:53,345 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 18 treesize of output 20 [2022-11-23 03:13:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:13:53,434 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 18 treesize of output 20 [2022-11-23 03:13:53,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:13:53,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-23 03:13:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:13:53,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:13:54,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:13:54,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2022-11-23 03:13:54,508 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-23 03:13:54,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-11-23 03:13:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:13:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:13:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788777769] [2022-11-23 03:13:56,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:13:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863394092] [2022-11-23 03:13:56,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863394092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:13:56,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:13:56,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-23 03:13:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404983375] [2022-11-23 03:13:56,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:13:56,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 03:13:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:13:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 03:13:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=232, Unknown=2, NotChecked=0, Total=306 [2022-11-23 03:13:56,617 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:13:57,758 INFO L93 Difference]: Finished difference Result 192 states and 242 transitions. [2022-11-23 03:13:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:13:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 45 [2022-11-23 03:13:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:13:57,761 INFO L225 Difference]: With dead ends: 192 [2022-11-23 03:13:57,761 INFO L226 Difference]: Without dead ends: 188 [2022-11-23 03:13:57,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=177, Invalid=471, Unknown=2, NotChecked=0, Total=650 [2022-11-23 03:13:57,762 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:13:57,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 47 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:13:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-23 03:13:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 169. [2022-11-23 03:13:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.2857142857142858) internal successors, (216), 168 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2022-11-23 03:13:57,842 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 45 [2022-11-23 03:13:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:13:57,842 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2022-11-23 03:13:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2022-11-23 03:13:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 03:13:57,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:13:57,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:13:57,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 03:13:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:13:58,051 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:13:58,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:13:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 4 times [2022-11-23 03:13:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:13:58,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492803697] [2022-11-23 03:13:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:13:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:13:58,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:13:58,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721077753] [2022-11-23 03:13:58,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:13:58,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:13:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:13:58,067 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:13:58,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 03:13:58,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:13:58,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:13:58,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 03:13:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:13:58,252 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 [2022-11-23 03:13:58,487 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 37 treesize of output 17 [2022-11-23 03:13:58,626 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-23 03:13:58,626 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 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 03:13:58,763 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 16 treesize of output 18 [2022-11-23 03:13:58,855 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 16 treesize of output 18 [2022-11-23 03:13:58,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 03:13:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 03:13:58,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:13:59,248 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_880) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-23 03:13:59,275 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_880) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-23 03:13:59,979 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-23 03:13:59,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 03:14:00,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:14:00,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-23 03:14:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 15 refuted. 2 times theorem prover too weak. 18 trivial. 12 not checked. [2022-11-23 03:14:00,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:00,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492803697] [2022-11-23 03:14:00,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:14:00,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721077753] [2022-11-23 03:14:00,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721077753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:00,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:14:00,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2022-11-23 03:14:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197290737] [2022-11-23 03:14:00,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:14:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:14:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=343, Unknown=5, NotChecked=78, Total=506 [2022-11-23 03:14:00,163 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:14:01,297 INFO L93 Difference]: Finished difference Result 202 states and 263 transitions. [2022-11-23 03:14:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 03:14:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 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 45 [2022-11-23 03:14:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:14:01,305 INFO L225 Difference]: With dead ends: 202 [2022-11-23 03:14:01,305 INFO L226 Difference]: Without dead ends: 162 [2022-11-23 03:14:01,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=413, Unknown=5, NotChecked=86, Total=600 [2022-11-23 03:14:01,313 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:14:01,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 59 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 418 Invalid, 0 Unknown, 84 Unchecked, 0.9s Time] [2022-11-23 03:14:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-23 03:14:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2022-11-23 03:14:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.2264150943396226) internal successors, (195), 159 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 195 transitions. [2022-11-23 03:14:01,405 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 195 transitions. Word has length 45 [2022-11-23 03:14:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:14:01,405 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 195 transitions. [2022-11-23 03:14:01,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 195 transitions. [2022-11-23 03:14:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 03:14:01,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:14:01,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:01,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 03:14:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:01,607 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:14:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1422716494, now seen corresponding path program 3 times [2022-11-23 03:14:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:14:01,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808121051] [2022-11-23 03:14:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:14:01,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:14:01,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466339126] [2022-11-23 03:14:01,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:14:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:01,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:14:01,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:14:01,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 03:14:01,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 03:14:01,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:14:01,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 03:14:01,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:01,945 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 15 treesize of output 11 [2022-11-23 03:14:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:14:02,231 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 27 treesize of output 26 [2022-11-23 03:14:02,407 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 03:14:02,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-23 03:14:02,606 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 03:14:02,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-23 03:14:02,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:14:02,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2022-11-23 03:14:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:14:03,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:14:32,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-11-23 03:14:32,567 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 68 treesize of output 62 [2022-11-23 03:14:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 03:14:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808121051] [2022-11-23 03:14:32,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:14:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466339126] [2022-11-23 03:14:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466339126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:32,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:14:32,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2022-11-23 03:14:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025123440] [2022-11-23 03:14:32,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 03:14:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 03:14:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=978, Unknown=6, NotChecked=0, Total=1260 [2022-11-23 03:14:32,585 INFO L87 Difference]: Start difference. First operand 160 states and 195 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:14:36,331 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2022-11-23 03:14:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 03:14:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-23 03:14:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:14:36,333 INFO L225 Difference]: With dead ends: 164 [2022-11-23 03:14:36,333 INFO L226 Difference]: Without dead ends: 115 [2022-11-23 03:14:36,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=759, Invalid=2657, Unknown=6, NotChecked=0, Total=3422 [2022-11-23 03:14:36,335 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 160 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:14:36,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 42 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 03:14:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-23 03:14:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-23 03:14:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 114 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-11-23 03:14:36,407 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 45 [2022-11-23 03:14:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:14:36,407 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-11-23 03:14:36,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-11-23 03:14:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 03:14:36,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:14:36,409 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:36,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-23 03:14:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 03:14:36,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:14:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2022-11-23 03:14:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:14:36,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715970885] [2022-11-23 03:14:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:14:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:14:37,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715970885] [2022-11-23 03:14:37,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715970885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:14:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119915380] [2022-11-23 03:14:37,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:14:37,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:37,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:14:37,092 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:14:37,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 03:14:37,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 03:14:37,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:14:37,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 03:14:37,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:14:37,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:14:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:14:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119915380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:38,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:14:38,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-23 03:14:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272826356] [2022-11-23 03:14:38,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:38,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 03:14:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 03:14:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:14:38,214 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:14:39,693 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2022-11-23 03:14:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 03:14:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2022-11-23 03:14:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:14:39,696 INFO L225 Difference]: With dead ends: 177 [2022-11-23 03:14:39,696 INFO L226 Difference]: Without dead ends: 159 [2022-11-23 03:14:39,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-11-23 03:14:39,697 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:14:39,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 40 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 03:14:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-23 03:14:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 107. [2022-11-23 03:14:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 106 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2022-11-23 03:14:39,764 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 47 [2022-11-23 03:14:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:14:39,764 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2022-11-23 03:14:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2022-11-23 03:14:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 03:14:39,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:14:39,768 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:39,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-23 03:14:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:39,975 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:14:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2022-11-23 03:14:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:14:39,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040116803] [2022-11-23 03:14:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:39,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:14:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:14:40,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040116803] [2022-11-23 03:14:40,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040116803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:14:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181112905] [2022-11-23 03:14:40,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:14:40,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:40,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:14:40,373 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:14:40,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 03:14:40,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-23 03:14:40,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:14:40,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 03:14:40,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 03:14:40,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:14:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 03:14:41,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181112905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:41,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:14:41,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-23 03:14:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592859723] [2022-11-23 03:14:41,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 03:14:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 03:14:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:14:41,287 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:14:42,040 INFO L93 Difference]: Finished difference Result 163 states and 193 transitions. [2022-11-23 03:14:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:14:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-23 03:14:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:14:42,044 INFO L225 Difference]: With dead ends: 163 [2022-11-23 03:14:42,044 INFO L226 Difference]: Without dead ends: 78 [2022-11-23 03:14:42,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:14:42,046 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 137 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:14:42,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 28 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:14:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-23 03:14:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2022-11-23 03:14:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-11-23 03:14:42,077 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 48 [2022-11-23 03:14:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:14:42,078 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-11-23 03:14:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-11-23 03:14:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 03:14:42,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:14:42,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:42,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 03:14:42,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 03:14:42,279 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:14:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2022-11-23 03:14:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:14:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527069410] [2022-11-23 03:14:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:14:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 03:14:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527069410] [2022-11-23 03:14:45,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527069410] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:14:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406811907] [2022-11-23 03:14:45,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:14:45,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:14:45,423 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:14:45,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 03:14:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-23 03:14:45,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:45,845 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 [2022-11-23 03:14:45,863 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 [2022-11-23 03:14:45,993 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 14 treesize of output 16 [2022-11-23 03:14:46,182 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 14 treesize of output 16 [2022-11-23 03:14:46,333 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 14 treesize of output 16 [2022-11-23 03:14:46,520 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 14 treesize of output 16 [2022-11-23 03:14:46,700 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 14 treesize of output 16 [2022-11-23 03:14:47,072 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 14 treesize of output 16 [2022-11-23 03:14:47,133 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 14 treesize of output 16 [2022-11-23 03:14:47,203 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 14 treesize of output 16 [2022-11-23 03:14:47,263 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 14 treesize of output 16 [2022-11-23 03:14:47,321 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 14 treesize of output 16 [2022-11-23 03:14:47,547 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 44 treesize of output 27 [2022-11-23 03:14:47,920 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:14:47,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-23 03:14:48,398 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:14:48,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-23 03:14:48,900 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 03:14:48,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 75 [2022-11-23 03:14:49,472 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:14:49,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-23 03:14:49,811 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:14:49,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 40 [2022-11-23 03:14:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:14:49,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:15:04,931 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_356| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_358| Int) (v_ArrVal_1169 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_354| Int) (|v_ULTIMATE.start_main_~i~0#1_360| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1169))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_1169 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_360| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_358| 4))))) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse5 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_356| 4))))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse0 .cse5 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_354| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (not (= .cse2 2)) (not (= 2 .cse3)) (= (* c_~N~0 2) (+ .cse2 .cse3 .cse4 .cse0 .cse5 .cse1)) (not (= 2 .cse4))))))))))) is different from false [2022-11-23 03:15:12,021 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 03:15:12,021 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1901 treesize of output 1 [2022-11-23 03:15:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 26 trivial. 9 not checked. [2022-11-23 03:15:12,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406811907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:15:12,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:15:12,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 65 [2022-11-23 03:15:12,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739758063] [2022-11-23 03:15:12,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:15:12,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-23 03:15:12,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-23 03:15:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3770, Unknown=7, NotChecked=124, Total=4160 [2022-11-23 03:15:12,031 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:34,651 WARN L233 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 89 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:16:06,824 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 146 DAG size of output: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:16:16,903 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 132 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:16:51,556 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 134 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:16:57,313 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 136 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:17:05,968 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 145 DAG size of output: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:17:07,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:17:23,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:17:25,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:17:29,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:17:44,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:17:46,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:17:59,750 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 131 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:18:21,756 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 149 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:18:23,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 03:18:26,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:18:28,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 03:18:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:28,725 INFO L93 Difference]: Finished difference Result 181 states and 213 transitions. [2022-11-23 03:18:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-23 03:18:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-23 03:18:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:28,727 INFO L225 Difference]: With dead ends: 181 [2022-11-23 03:18:28,727 INFO L226 Difference]: Without dead ends: 175 [2022-11-23 03:18:28,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5703 ImplicationChecksByTransitivity, 183.4s TimeCoverageRelationStatistics Valid=1414, Invalid=18222, Unknown=108, NotChecked=278, Total=20022 [2022-11-23 03:18:28,731 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 313 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:28,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 239 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2783 Invalid, 28 Unknown, 106 Unchecked, 35.1s Time] [2022-11-23 03:18:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-23 03:18:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2022-11-23 03:18:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 131 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2022-11-23 03:18:28,806 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 53 [2022-11-23 03:18:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:28,806 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2022-11-23 03:18:28,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2022-11-23 03:18:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 03:18:28,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:28,807 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:28,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 03:18:29,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:29,008 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1343172751, now seen corresponding path program 5 times [2022-11-23 03:18:29,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:29,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001538706] [2022-11-23 03:18:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:29,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:29,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:18:29,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458839958] [2022-11-23 03:18:29,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:18:29,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:29,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:29,027 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:29,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 03:18:29,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 03:18:29,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:18:29,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 03:18:29,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:29,464 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 [2022-11-23 03:18:29,917 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 37 treesize of output 17 [2022-11-23 03:18:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:18:30,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 03:18:30,267 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 16 treesize of output 18 [2022-11-23 03:18:30,402 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 16 treesize of output 18 [2022-11-23 03:18:30,511 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 16 treesize of output 18 [2022-11-23 03:18:30,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 03:18:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:18:30,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:18:30,886 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1261 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-23 03:18:31,008 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1261 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-23 03:18:33,646 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-23 03:18:33,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 03:18:33,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:18:33,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-23 03:18:33,683 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 7 treesize of output 3 [2022-11-23 03:18:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 17 not checked. [2022-11-23 03:18:34,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:34,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001538706] [2022-11-23 03:18:34,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:18:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458839958] [2022-11-23 03:18:34,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458839958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:18:34,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:18:34,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-23 03:18:34,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452914523] [2022-11-23 03:18:34,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:18:34,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 03:18:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 03:18:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=687, Unknown=7, NotChecked=110, Total=930 [2022-11-23 03:18:34,138 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:36,128 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2022-11-23 03:18:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:18:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 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 53 [2022-11-23 03:18:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:36,130 INFO L225 Difference]: With dead ends: 223 [2022-11-23 03:18:36,130 INFO L226 Difference]: Without dead ends: 214 [2022-11-23 03:18:36,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=146, Invalid=785, Unknown=7, NotChecked=118, Total=1056 [2022-11-23 03:18:36,131 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 144 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 102 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 722 Invalid, 0 Unknown, 154 Unchecked, 1.6s Time] [2022-11-23 03:18:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-23 03:18:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 178. [2022-11-23 03:18:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.2033898305084745) internal successors, (213), 177 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2022-11-23 03:18:36,274 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 53 [2022-11-23 03:18:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:36,275 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2022-11-23 03:18:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2022-11-23 03:18:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 03:18:36,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:36,277 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:36,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-23 03:18:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 03:18:36,485 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1405212365, now seen corresponding path program 4 times [2022-11-23 03:18:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:36,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766947622] [2022-11-23 03:18:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:36,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:18:36,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106668956] [2022-11-23 03:18:36,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:18:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:36,505 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:36,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 03:18:36,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:18:36,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:18:36,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 03:18:36,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:36,721 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 15 treesize of output 11 [2022-11-23 03:18:36,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-23 03:18:37,017 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-23 03:18:37,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 37 [2022-11-23 03:18:37,249 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-23 03:18:37,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-23 03:18:37,433 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-23 03:18:37,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-23 03:18:37,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:18:37,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2022-11-23 03:18:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 03:18:37,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:18:51,351 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_423| Int) (v_ArrVal_1341 Int) (|v_ULTIMATE.start_main_~i~0#1_418| Int) (v_ArrVal_1339 Int)) (let ((.cse0 (+ |v_ULTIMATE.start_main_~i~0#1_418| 1))) (or (< |v_ULTIMATE.start_main_~i~0#1_418| (+ 3 |v_ULTIMATE.start_main_~i~0#1_423|)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1339) (+ (* |v_ULTIMATE.start_main_~i~0#1_423| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1341) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_418| 4))) 1) (< |c_ULTIMATE.start_main_~i~0#1| .cse0) (< .cse0 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2022-11-23 03:18:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 31 refuted. 0 times theorem prover too weak. 44 trivial. 1 not checked. [2022-11-23 03:18:52,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766947622] [2022-11-23 03:18:52,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:18:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106668956] [2022-11-23 03:18:52,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106668956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:18:52,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:18:52,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 23 [2022-11-23 03:18:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32361385] [2022-11-23 03:18:52,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:18:52,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:18:52,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:18:52,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=369, Unknown=6, NotChecked=40, Total=506 [2022-11-23 03:18:52,078 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:58,298 INFO L93 Difference]: Finished difference Result 292 states and 354 transitions. [2022-11-23 03:18:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 03:18:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 53 [2022-11-23 03:18:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:58,301 INFO L225 Difference]: With dead ends: 292 [2022-11-23 03:18:58,301 INFO L226 Difference]: Without dead ends: 198 [2022-11-23 03:18:58,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=346, Invalid=1133, Unknown=7, NotChecked=74, Total=1560 [2022-11-23 03:18:58,302 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:58,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 36 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 269 Invalid, 0 Unknown, 31 Unchecked, 0.7s Time] [2022-11-23 03:18:58,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-23 03:18:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 190. [2022-11-23 03:18:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.2116402116402116) internal successors, (229), 189 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 229 transitions. [2022-11-23 03:18:58,398 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 229 transitions. Word has length 53 [2022-11-23 03:18:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:58,399 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 229 transitions. [2022-11-23 03:18:58,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 229 transitions. [2022-11-23 03:18:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 03:18:58,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:58,400 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:58,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 03:18:58,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 03:18:58,606 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash 783767503, now seen corresponding path program 14 times [2022-11-23 03:18:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:58,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050741191] [2022-11-23 03:18:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:58,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:18:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:59,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050741191] [2022-11-23 03:18:59,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050741191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:18:59,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498407104] [2022-11-23 03:18:59,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:18:59,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:59,094 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:59,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 03:18:59,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:18:59,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:18:59,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 03:18:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:18:59,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:19:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:19:00,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498407104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:19:00,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:19:00,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-23 03:19:00,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962912948] [2022-11-23 03:19:00,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:19:00,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:19:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:19:00,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:19:00,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-23 03:19:00,148 INFO L87 Difference]: Start difference. First operand 190 states and 229 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:19:02,254 INFO L93 Difference]: Finished difference Result 283 states and 341 transitions. [2022-11-23 03:19:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 03:19:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-23 03:19:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:19:02,256 INFO L225 Difference]: With dead ends: 283 [2022-11-23 03:19:02,256 INFO L226 Difference]: Without dead ends: 262 [2022-11-23 03:19:02,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 03:19:02,257 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:19:02,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 40 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 03:19:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-23 03:19:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 171. [2022-11-23 03:19:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 170 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2022-11-23 03:19:02,359 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 55 [2022-11-23 03:19:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:19:02,359 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2022-11-23 03:19:02,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2022-11-23 03:19:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 03:19:02,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:19:02,361 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:19:02,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 03:19:02,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-23 03:19:02,572 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:19:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:19:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -469998324, now seen corresponding path program 15 times [2022-11-23 03:19:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:19:02,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501074206] [2022-11-23 03:19:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:19:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:19:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:19:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 03:19:03,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:19:03,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501074206] [2022-11-23 03:19:03,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501074206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:19:03,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939316596] [2022-11-23 03:19:03,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:19:03,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:19:03,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:19:03,090 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:19:03,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 03:19:03,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 03:19:03,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:19:03,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 03:19:03,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:19:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 03:19:03,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:19:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 03:19:04,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939316596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:19:04,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:19:04,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-23 03:19:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111898] [2022-11-23 03:19:04,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:19:04,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:19:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:19:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:19:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-23 03:19:04,300 INFO L87 Difference]: Start difference. First operand 171 states and 207 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:19:05,126 INFO L93 Difference]: Finished difference Result 261 states and 312 transitions. [2022-11-23 03:19:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 03:19:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 56 [2022-11-23 03:19:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:19:05,128 INFO L225 Difference]: With dead ends: 261 [2022-11-23 03:19:05,128 INFO L226 Difference]: Without dead ends: 121 [2022-11-23 03:19:05,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-11-23 03:19:05,129 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 161 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:19:05,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 26 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 03:19:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-23 03:19:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2022-11-23 03:19:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2) internal successors, (114), 95 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2022-11-23 03:19:05,172 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 56 [2022-11-23 03:19:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:19:05,172 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2022-11-23 03:19:05,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:19:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2022-11-23 03:19:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 03:19:05,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:19:05,173 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:19:05,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-23 03:19:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 03:19:05,380 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:19:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:19:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -844503370, now seen corresponding path program 16 times [2022-11-23 03:19:05,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:19:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203773938] [2022-11-23 03:19:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:19:05,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:19:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:19:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 03:19:10,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:19:10,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203773938] [2022-11-23 03:19:10,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203773938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:19:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375700197] [2022-11-23 03:19:10,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:19:10,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:19:10,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:19:10,234 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:19:10,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_326a3623-72a9-47c9-b28b-305923d11b48/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-23 03:19:10,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:19:10,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:19:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-23 03:19:10,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:19:10,475 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 [2022-11-23 03:19:10,485 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 [2022-11-23 03:19:10,614 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 14 treesize of output 16 [2022-11-23 03:19:10,838 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 14 treesize of output 16 [2022-11-23 03:19:11,033 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 14 treesize of output 16 [2022-11-23 03:19:11,221 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 14 treesize of output 16 [2022-11-23 03:19:11,392 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 14 treesize of output 16 [2022-11-23 03:19:11,552 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 14 treesize of output 16 [2022-11-23 03:19:12,183 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 14 treesize of output 16 [2022-11-23 03:19:12,393 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 14 treesize of output 16 [2022-11-23 03:19:12,591 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 14 treesize of output 16 [2022-11-23 03:19:12,792 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 14 treesize of output 16 [2022-11-23 03:19:13,004 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 14 treesize of output 16 [2022-11-23 03:19:13,231 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 14 treesize of output 16 [2022-11-23 03:19:13,464 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 44 treesize of output 27 [2022-11-23 03:19:13,893 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:19:13,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-23 03:19:14,392 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:19:14,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-23 03:19:14,909 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 03:19:14,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 58 [2022-11-23 03:19:15,465 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:19:15,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-23 03:19:15,972 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:19:15,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-23 03:19:16,301 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 03:19:16,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2022-11-23 03:19:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 35 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:19:16,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:19:51,676 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse1 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= 2 .cse0)) (not (= .cse1 2)) (not (= 2 .cse2)) (= (* c_~N~0 2) (+ .cse1 .cse3 .cse4 .cse5 .cse6 .cse2 .cse0)) (not (= 2 .cse5)) (not (= 2 .cse6)) (not (= .cse3 2)))))))))))) is different from false [2022-11-23 03:19:52,004 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse1 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse5 .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= 2 .cse0)) (not (= .cse1 2)) (not (= 2 .cse2)) (= (* c_~N~0 2) (+ .cse1 .cse3 .cse4 .cse5 .cse6 .cse2 .cse0)) (not (= 2 .cse5)) (not (= 2 .cse6)) (not (= .cse3 2)))))))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) is different from false [2022-11-23 03:20:23,173 WARN L233 SmtUtils]: Spent 11.32s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:20:40,221 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:20:58,695 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:21:19,239 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:21:40,628 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:22:08,986 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:22:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-23 03:22:09,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375700197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:22:09,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:22:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 32] total 88 [2022-11-23 03:22:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894019666] [2022-11-23 03:22:09,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:22:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-11-23 03:22:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:22:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-11-23 03:22:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=6816, Unknown=42, NotChecked=338, Total=7656 [2022-11-23 03:22:09,454 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 88 states, 88 states have (on average 1.7840909090909092) internal successors, (157), 88 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:22:29,105 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse34 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse10 (< |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse41 (< |c_ULTIMATE.start_main_~i~0#1| 5)) (.cse49 (+ .cse34 3)) (.cse0 (+ .cse34 9)) (.cse11 (< |c_ULTIMATE.start_main_~i~0#1| 3)) (.cse88 (+ .cse34 7)) (.cse71 (< |c_ULTIMATE.start_main_~i~0#1| 2)) (.cse61 (< |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse15 (+ .cse34 5))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (< .cse0 (+ .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7)) (not (= .cse2 2)) (not (= 2 .cse5)) (not (= 2 .cse7)) (not (= .cse1 2)) (not (= 2 .cse6)) (not (= 2 .cse4)))))))))))) .cse10) (or .cse11 (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse17 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse17))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse13 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse17 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse17 .cse13 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse16 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse17 .cse13 .cse19 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse18 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse16 .cse12 .cse17 .cse13 .cse19 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse12 2)) (not (= 2 .cse13)) (not (= 2 .cse14)) (< .cse15 (+ .cse16 .cse12 .cse17 .cse18 .cse13 .cse19 .cse14)) (not (= .cse16 2)) (not (= 2 .cse19)) (not (= 2 .cse18))))))))))))) (or .cse10 (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse30 (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse22 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse27 (select .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse24 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse27))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse23 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse27 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse26 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse27 .cse23 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse25 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse27 .cse23 .cse26 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse28 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse25 .cse22 .cse27 .cse23 .cse26 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse22 2)) (not (= 2 .cse23)) (not (= 2 .cse24)) (not (= .cse25 2)) (not (= 2 .cse26)) (< (+ .cse25 .cse22 .cse27 .cse28 .cse23 .cse26 .cse24) 13) (not (= 2 .cse28))))))))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse40 (select .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse31 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse36 (select .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse33 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse31 .cse36))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse32 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse31 .cse36 .cse33))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse31 .cse36 .cse32 .cse33))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse35 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse31 .cse36 .cse32 .cse38 .cse33))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse37 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse35 .cse31 .cse36 .cse32 .cse38 .cse33))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse31 2)) (not (= 2 .cse32)) (not (= 2 .cse33)) (< (+ .cse34 1) (+ .cse35 .cse31 .cse36 .cse37 .cse32 .cse38 .cse33)) (not (= .cse35 2)) (not (= 2 .cse38)) (not (= 2 .cse37)))))))))))) .cse41) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse50 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse51 (select .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse42 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse47 (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse44 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse42 .cse47))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse43 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse42 .cse47 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse46 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse42 .cse47 .cse43 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse45 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse42 .cse47 .cse43 .cse46 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse48 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse42 .cse47 .cse43 .cse46 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse42 2)) (not (= 2 .cse43)) (not (= 2 .cse44)) (not (= .cse45 2)) (not (= 2 .cse46)) (< (+ .cse45 .cse42 .cse47 .cse48 .cse43 .cse46 .cse44) .cse49) (not (= 2 .cse48)))))))))))) .cse41) (or (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0) (< c_~N~0 6) (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse60 (select .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse52 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse57 (select .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse54 (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse57))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse53 (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse57 .cse54))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse56 (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse57 .cse53 .cse54))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse55 (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse57 .cse53 .cse56 .cse54))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse58 (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse55 .cse52 .cse57 .cse53 .cse56 .cse54))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse52 2)) (not (= 2 .cse53)) (not (= 2 .cse54)) (not (= .cse55 2)) (not (= 2 .cse56)) (= (* c_~N~0 2) (+ .cse55 .cse52 .cse57 .cse58 .cse53 .cse56 .cse54)) (not (= 2 .cse58))))))))))))) (or .cse61 (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse69 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse70 (select .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse62 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse67 (select .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse64 (select (select (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse67))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse63 (select (select (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse67 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse66 (select (select (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse67 .cse63 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse65 (select (select (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse67 .cse63 .cse66 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse68 (select (select (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse65 .cse62 .cse67 .cse63 .cse66 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse62 2)) (not (= 2 .cse63)) (not (= 2 .cse64)) (not (= .cse65 2)) (not (= 2 .cse66)) (< .cse49 (+ .cse65 .cse62 .cse67 .cse68 .cse63 .cse66 .cse64)) (not (= 2 .cse68))))))))))))) (or .cse71 (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse80 (select .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse72 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse76 (select .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse74 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse72 .cse76))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse73 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse72 .cse76 .cse74))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse78 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse72 .cse76 .cse73 .cse74))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse75 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse72 .cse76 .cse73 .cse78 .cse74))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse77 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse75 .cse72 .cse76 .cse73 .cse78 .cse74))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse72 2)) (not (= 2 .cse73)) (not (= 2 .cse74)) (< (+ .cse75 .cse72 .cse76 .cse77 .cse73 .cse78 .cse74) .cse0) (not (= .cse75 2)) (not (= 2 .cse78)) (not (= 2 .cse77))))))))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse89 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse90 (select .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse82 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse83 (select .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse87 (select (select (store .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse82 .cse83))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse85 (select (select (store .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse82 .cse83 .cse87))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse86 (select (select (store .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse82 .cse83 .cse85 .cse87))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse81 (select (select (store .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse82 .cse83 .cse85 .cse86 .cse87))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse84 (select (select (store .cse89 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse90 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse81 .cse82 .cse83 .cse85 .cse86 .cse87))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (< (+ .cse81 .cse82 .cse83 .cse84 .cse85 .cse86 .cse87) .cse88) (not (= .cse82 2)) (not (= 2 .cse85)) (not (= 2 .cse87)) (not (= .cse81 2)) (not (= 2 .cse86)) (not (= 2 .cse84)))))))))))) .cse11) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse98 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse99 (select .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse91 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse95 (select .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse93 (select (select (store .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse91 .cse95))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse92 (select (select (store .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse91 .cse95 .cse93))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse97 (select (select (store .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse91 .cse95 .cse92 .cse93))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse94 (select (select (store .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse91 .cse95 .cse92 .cse97 .cse93))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse96 (select (select (store .cse98 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse99 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse94 .cse91 .cse95 .cse92 .cse97 .cse93))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse91 2)) (not (= 2 .cse92)) (not (= 2 .cse93)) (< .cse88 (+ .cse94 .cse91 .cse95 .cse96 .cse92 .cse97 .cse93)) (not (= .cse94 2)) (not (= 2 .cse97)) (not (= 2 .cse96)))))))))))) .cse71) (or .cse61 (forall ((|v_ULTIMATE.start_main_~i~0#1_498| Int) (v_ArrVal_1602 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_500| Int) (|v_ULTIMATE.start_main_~i~0#1_494| Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (|v_ULTIMATE.start_main_~i~0#1_506| Int) (|v_ULTIMATE.start_main_~i~0#1_502| Int)) (let ((.cse107 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1602))) (let ((.cse108 (select .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse100 (select v_ArrVal_1602 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_506| 4)))) (.cse104 (select .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse102 (select (select (store .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse100 .cse104))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_502| 4))))) (let ((.cse101 (select (select (store .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse100 .cse104 .cse102))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_500| 4))))) (let ((.cse106 (select (select (store .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse100 .cse104 .cse101 .cse102))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_498| 4))))) (let ((.cse103 (select (select (store .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse100 .cse104 .cse101 .cse106 .cse102))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_496| 4))))) (let ((.cse105 (select (select (store .cse107 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse108 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse103 .cse100 .cse104 .cse101 .cse106 .cse102))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_494| 4))))) (or (not (= .cse100 2)) (not (= 2 .cse101)) (not (= 2 .cse102)) (not (= .cse103 2)) (< (+ .cse103 .cse100 .cse104 .cse105 .cse101 .cse106 .cse102) .cse15) (not (= 2 .cse106)) (not (= 2 .cse105)))))))))))))))) is different from true [2022-11-23 03:22:51,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]