./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8 --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 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e --- 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-2329fc7 [2022-12-13 15:22:27,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:22:27,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:22:27,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:22:27,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:22:27,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:22:27,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:22:27,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:22:27,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:22:27,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:22:27,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:22:27,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:22:27,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:22:27,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:22:27,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:22:27,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:22:27,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:22:27,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:22:27,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:22:27,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:22:27,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:22:27,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:22:27,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:22:27,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:22:27,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:22:27,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:22:27,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:22:27,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:22:27,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:22:27,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:22:27,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:22:27,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:22:27,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:22:27,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:22:27,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:22:27,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:22:27,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:22:27,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:22:27,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:22:27,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:22:27,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:22:27,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:22:27,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:22:27,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:22:27,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:22:27,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:22:27,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:22:27,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:22:27,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:22:27,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:22:27,891 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:22:27,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:22:27,891 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:22:27,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:22:27,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:22:27,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:22:27,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:22:27,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:22:27,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:22:27,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:22:27,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:22:27,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:22:27,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:22:27,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:22:27,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:22:27,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:22:27,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:22:27,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:22:27,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:22:27,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:22:27,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:22:27,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:22:27,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:22:27,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:22:27,896 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:22:27,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:22:27,896 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:22:27,896 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_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e [2022-12-13 15:22:28,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:22:28,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:22:28,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:22:28,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:22:28,111 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:22:28,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2022-12-13 15:22:30,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:22:30,757 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:22:30,757 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2022-12-13 15:22:30,762 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/data/84e445de7/e46c80c2ca724890a4d7d8279a061488/FLAG7923ad23c [2022-12-13 15:22:31,156 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/data/84e445de7/e46c80c2ca724890a4d7d8279a061488 [2022-12-13 15:22:31,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:22:31,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:22:31,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:22:31,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:22:31,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:22:31,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d56185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31, skipping insertion in model container [2022-12-13 15:22:31,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:22:31,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:22:31,310 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_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2022-12-13 15:22:31,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:22:31,326 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:22:31,335 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_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2022-12-13 15:22:31,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:22:31,351 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:22:31,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31 WrapperNode [2022-12-13 15:22:31,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:22:31,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:22:31,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:22:31,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:22:31,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,374 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-12-13 15:22:31,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:22:31,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:22:31,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:22:31,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:22:31,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:22:31,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:22:31,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:22:31,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:22:31,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (1/1) ... [2022-12-13 15:22:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:22:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:31,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:22:31,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:22:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:22:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:22:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:22:31,502 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:22:31,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:22:31,594 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:22:31,598 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:22:31,599 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:22:31,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:22:31 BoogieIcfgContainer [2022-12-13 15:22:31,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:22:31,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:22:31,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:22:31,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:22:31,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:22:31" (1/3) ... [2022-12-13 15:22:31,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143da286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:22:31, skipping insertion in model container [2022-12-13 15:22:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:22:31" (2/3) ... [2022-12-13 15:22:31,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143da286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:22:31, skipping insertion in model container [2022-12-13 15:22:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:22:31" (3/3) ... [2022-12-13 15:22:31,607 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.i [2022-12-13 15:22:31,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:22:31,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:22:31,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:22:31,662 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;@5b09a107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:22:31,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:22:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 15:22:31,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:31,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:31,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1156778892, now seen corresponding path program 1 times [2022-12-13 15:22:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:31,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733644090] [2022-12-13 15:22:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:31,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:31,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733644090] [2022-12-13 15:22:31,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733644090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:31,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:31,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:22:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056697280] [2022-12-13 15:22:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:31,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:22:31,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:22:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:22:31,915 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:31,962 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-12-13 15:22:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:22:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-13 15:22:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:31,970 INFO L225 Difference]: With dead ends: 40 [2022-12-13 15:22:31,970 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 15:22:31,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:22:31,974 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:31,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:22:31,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 15:22:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2022-12-13 15:22:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-12-13 15:22:31,997 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2022-12-13 15:22:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:31,998 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-12-13 15:22:31,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-12-13 15:22:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 15:22:31,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:31,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:31,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:22:31,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:32,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1156719310, now seen corresponding path program 1 times [2022-12-13 15:22:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:32,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166104347] [2022-12-13 15:22:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:32,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166104347] [2022-12-13 15:22:32,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166104347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:32,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:32,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:22:32,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820136515] [2022-12-13 15:22:32,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:32,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:22:32,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:22:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:22:32,070 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:32,091 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-13 15:22:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:22:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-13 15:22:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:32,092 INFO L225 Difference]: With dead ends: 36 [2022-12-13 15:22:32,092 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 15:22:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:22:32,094 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:32,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:22:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 15:22:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2022-12-13 15:22:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 15:22:32,098 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-12-13 15:22:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:32,098 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 15:22:32,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 15:22:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 15:22:32,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:32,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:22:32,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 723292333, now seen corresponding path program 1 times [2022-12-13 15:22:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:32,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033877732] [2022-12-13 15:22:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:32,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:32,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033877732] [2022-12-13 15:22:32,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033877732] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:32,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606558900] [2022-12-13 15:22:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:32,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:32,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:32,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:22:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:32,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 15:22:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:32,314 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 [2022-12-13 15:22:32,378 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 33 treesize of output 21 [2022-12-13 15:22:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:32,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:22:32,587 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 35 treesize of output 31 [2022-12-13 15:22:32,594 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 40 treesize of output 36 [2022-12-13 15:22:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:32,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606558900] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:22:32,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:22:32,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8] total 14 [2022-12-13 15:22:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029563862] [2022-12-13 15:22:32,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:22:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:22:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:22:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:22:32,629 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2022-12-13 15:22:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:32,890 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-12-13 15:22:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:22:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) Word has length 10 [2022-12-13 15:22:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:32,891 INFO L225 Difference]: With dead ends: 61 [2022-12-13 15:22:32,891 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 15:22:32,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2022-12-13 15:22:32,894 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:32,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 68 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:22:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 15:22:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 16. [2022-12-13 15:22:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 15:22:32,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-12-13 15:22:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:32,898 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 15:22:32,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2022-12-13 15:22:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 15:22:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 15:22:32,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:32,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:32,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:22:33,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:33,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:33,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1125888878, now seen corresponding path program 2 times [2022-12-13 15:22:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690331136] [2022-12-13 15:22:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:33,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690331136] [2022-12-13 15:22:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690331136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745770656] [2022-12-13 15:22:33,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:22:33,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:33,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:33,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:22:33,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:22:33,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:33,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 15:22:33,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:33,401 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 19 treesize of output 15 [2022-12-13 15:22:33,420 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 21 treesize of output 20 [2022-12-13 15:22:33,458 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 33 treesize of output 21 [2022-12-13 15:22:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:33,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:22:33,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2022-12-13 15:22:33,708 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 102 treesize of output 98 [2022-12-13 15:22:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:22:33,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745770656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:22:33,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:22:33,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 9] total 17 [2022-12-13 15:22:33,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241479438] [2022-12-13 15:22:33,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:22:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:22:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:22:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:22:33,766 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:34,638 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2022-12-13 15:22:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 15:22:34,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 15:22:34,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:34,639 INFO L225 Difference]: With dead ends: 84 [2022-12-13 15:22:34,639 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 15:22:34,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 15:22:34,641 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 315 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:34,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 51 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:22:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 15:22:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2022-12-13 15:22:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-13 15:22:34,649 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2022-12-13 15:22:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:34,649 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-13 15:22:34,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:22:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-13 15:22:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 15:22:34,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:34,650 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:34,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:22:34,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 15:22:34,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:34,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1178611616, now seen corresponding path program 1 times [2022-12-13 15:22:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462371168] [2022-12-13 15:22:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:35,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462371168] [2022-12-13 15:22:35,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462371168] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:35,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176783051] [2022-12-13 15:22:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:35,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:35,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:35,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:22:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:35,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 15:22:35,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:35,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:22:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:35,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176783051] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:22:35,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:22:35,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 15:22:35,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121589940] [2022-12-13 15:22:35,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:22:35,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:22:35,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:22:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:22:35,177 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-12-13 15:22:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:35,405 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2022-12-13 15:22:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:22:35,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 18 [2022-12-13 15:22:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:35,406 INFO L225 Difference]: With dead ends: 102 [2022-12-13 15:22:35,406 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 15:22:35,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:22:35,407 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 165 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:35,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 121 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:22:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 15:22:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 24. [2022-12-13 15:22:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2022-12-13 15:22:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-12-13 15:22:35,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2022-12-13 15:22:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:35,414 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-12-13 15:22:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-12-13 15:22:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-12-13 15:22:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 15:22:35,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:35,415 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:35,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:22:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:35,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 515460421, now seen corresponding path program 2 times [2022-12-13 15:22:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:35,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106074075] [2022-12-13 15:22:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106074075] [2022-12-13 15:22:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106074075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46226702] [2022-12-13 15:22:35,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:22:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:35,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:35,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:22:36,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:22:36,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:22:36,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:22:36,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:36,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:22:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46226702] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:22:36,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:22:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-12-13 15:22:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574079015] [2022-12-13 15:22:36,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:22:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:22:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:22:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-12-13 15:22:36,292 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 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) [2022-12-13 15:22:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:38,505 INFO L93 Difference]: Finished difference Result 212 states and 241 transitions. [2022-12-13 15:22:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:22:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-13 15:22:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:38,507 INFO L225 Difference]: With dead ends: 212 [2022-12-13 15:22:38,507 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 15:22:38,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=306, Invalid=506, Unknown=0, NotChecked=0, Total=812 [2022-12-13 15:22:38,509 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 789 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:38,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 535 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 15:22:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 15:22:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 34. [2022-12-13 15:22:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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) [2022-12-13 15:22:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-12-13 15:22:38,518 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2022-12-13 15:22:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:38,518 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-12-13 15:22:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 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) [2022-12-13 15:22:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-12-13 15:22:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 15:22:38,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:38,518 INFO L195 NwaCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:38,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:22:38,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:38,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1960444453, now seen corresponding path program 3 times [2022-12-13 15:22:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823108094] [2022-12-13 15:22:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:22:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823108094] [2022-12-13 15:22:39,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823108094] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860373856] [2022-12-13 15:22:39,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:22:39,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:39,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:39,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e26c4b-4a30-4650-b18d-f6a0d6c97529/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:23:30,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-13 15:23:30,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:23:30,104 WARN L261 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 145 conjunts are in the unsatisfiable core [2022-12-13 15:23:30,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:30,157 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-13 15:23:30,157 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 29 treesize of output 28 [2022-12-13 15:23:30,216 INFO L321 Elim1Store]: treesize reduction 92, result has 29.8 percent of original size [2022-12-13 15:23:30,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 60 [2022-12-13 15:23:30,287 INFO L321 Elim1Store]: treesize reduction 45, result has 27.4 percent of original size [2022-12-13 15:23:30,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 62 [2022-12-13 15:23:30,376 INFO L321 Elim1Store]: treesize reduction 108, result has 27.0 percent of original size [2022-12-13 15:23:30,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 83 [2022-12-13 15:23:30,506 INFO L321 Elim1Store]: treesize reduction 108, result has 27.0 percent of original size [2022-12-13 15:23:30,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 98 [2022-12-13 15:23:30,662 INFO L321 Elim1Store]: treesize reduction 108, result has 27.0 percent of original size [2022-12-13 15:23:30,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 113 [2022-12-13 15:23:30,827 INFO L321 Elim1Store]: treesize reduction 108, result has 27.0 percent of original size [2022-12-13 15:23:30,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 128 [2022-12-13 15:23:30,998 INFO L321 Elim1Store]: treesize reduction 45, result has 27.4 percent of original size [2022-12-13 15:23:30,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 107 [2022-12-13 15:23:31,167 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-13 15:23:31,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 155 [2022-12-13 15:23:31,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 137 [2022-12-13 15:23:31,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 21 [2022-12-13 15:23:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,399 INFO L321 Elim1Store]: treesize reduction 88, result has 5.4 percent of original size [2022-12-13 15:23:31,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 109 treesize of output 181 [2022-12-13 15:23:31,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:31,463 INFO L321 Elim1Store]: treesize reduction 130, result has 7.8 percent of original size [2022-12-13 15:23:31,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 78 [2022-12-13 15:23:31,761 INFO L321 Elim1Store]: treesize reduction 61, result has 21.8 percent of original size [2022-12-13 15:23:31,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 152 treesize of output 154 [2022-12-13 15:23:32,007 INFO L321 Elim1Store]: treesize reduction 73, result has 18.9 percent of original size [2022-12-13 15:23:32,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 164 treesize of output 169 [2022-12-13 15:23:32,325 INFO L321 Elim1Store]: treesize reduction 73, result has 18.9 percent of original size [2022-12-13 15:23:32,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 198 treesize of output 187 [2022-12-13 15:23:32,626 INFO L321 Elim1Store]: treesize reduction 196, result has 22.8 percent of original size [2022-12-13 15:23:32,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 208 [2022-12-13 15:23:32,969 INFO L321 Elim1Store]: treesize reduction 87, result has 16.3 percent of original size [2022-12-13 15:23:32,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 225 treesize of output 217 [2022-12-13 15:23:33,360 INFO L321 Elim1Store]: treesize reduction 240, result has 21.8 percent of original size [2022-12-13 15:23:33,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 265 treesize of output 247 [2022-12-13 15:23:33,729 INFO L321 Elim1Store]: treesize reduction 87, result has 16.3 percent of original size [2022-12-13 15:23:33,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 268 treesize of output 244 [2022-12-13 15:23:34,112 INFO L321 Elim1Store]: treesize reduction 87, result has 16.3 percent of original size [2022-12-13 15:23:34,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 277 treesize of output 253 [2022-12-13 15:23:34,601 INFO L321 Elim1Store]: treesize reduction 240, result has 21.8 percent of original size [2022-12-13 15:23:34,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 317 treesize of output 283 [2022-12-13 15:23:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:23:34,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:24:39,293 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 13) 4294967296))) (or (not (< .cse0 10000)) (forall ((v_ArrVal_169 Int) (v_ArrVal_179 Int) (v_ArrVal_167 Int) (v_ArrVal_189 Int) (v_ArrVal_187 Int) (v_ArrVal_186 Int) (v_ArrVal_173 Int) (v_ArrVal_171 Int) (v_ArrVal_193 Int) (v_ArrVal_181 Int) (v_ArrVal_191 Int)) (let ((.cse1 (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod |c_ULTIMATE.start_main_~index~0#1| 4294967296) 4)) v_ArrVal_167) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 1) 4294967296))) v_ArrVal_169) (+ (* (mod (+ 2 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_171) (+ (* 4 (mod (+ 3 |c_ULTIMATE.start_main_~index~0#1|) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_173) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 4) 4294967296))) (+ 8 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 5 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) (+ |c_ULTIMATE.start_main_~tmp~0#1| 10)) (+ (* (mod (+ 6 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_179) (+ (* (mod (+ 7 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_181) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 8) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) (+ 16 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* (mod (+ 9 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_186) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 10) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_187) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 11) 4294967296) 4)) v_ArrVal_189) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 12) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_191) (+ (* 4 .cse0) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_193))) (or (= (mod (select .cse1 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 4294967296) 2) (not (= (mod (select .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|) 4294967296) 0))))) (< (mod (+ 14 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 10000))) is different from true [2022-12-13 15:25:27,896 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ 16 |c_ULTIMATE.start_main_~index~0#1|) 4294967296))) (or (forall ((v_ArrVal_169 Int) (v_ArrVal_179 Int) (v_ArrVal_167 Int) (v_ArrVal_189 Int) (v_ArrVal_166 Int) (v_ArrVal_187 Int) (v_ArrVal_164 Int) (v_ArrVal_186 Int) (v_ArrVal_173 Int) (v_ArrVal_171 Int) (v_ArrVal_193 Int) (v_ArrVal_181 Int) (v_ArrVal_191 Int)) (let ((.cse0 (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod |c_ULTIMATE.start_main_~index~0#1| 4294967296) 4)) |c_ULTIMATE.start_main_~tmp~0#1|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 1) 4294967296))) v_ArrVal_164) (+ (* (mod (+ 2 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_166) (+ (* 4 (mod (+ 3 |c_ULTIMATE.start_main_~index~0#1|) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_167) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 4) 4294967296))) v_ArrVal_169) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 5 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) v_ArrVal_171) (+ (* (mod (+ 6 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_173) (+ (* (mod (+ 7 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) (+ 14 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 8) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) (+ 16 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* (mod (+ 9 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_179) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 10) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_181) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 11) 4294967296) 4)) (+ 22 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 12) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_186) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 13) 4294967296)) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_187) (+ (* (mod (+ 14 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_189) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 15) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_191) (+ (* .cse1 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_193))) (or (= 2 (mod (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 4294967296)) (not (= (mod (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|) 4294967296) 0))))) (< (mod (+ |c_ULTIMATE.start_main_~index~0#1| 17) 4294967296) 10000) (not (< .cse1 10000)))) is different from true [2022-12-13 15:25:33,040 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 17) 4294967296))) (or (forall ((|ULTIMATE.start_main_~#array~0#1.offset| Int) (v_ArrVal_169 Int) (|ULTIMATE.start_main_~#array~0#1.base| Int) (v_ArrVal_179 Int) (v_ArrVal_167 Int) (v_ArrVal_189 Int) (v_ArrVal_166 Int) (v_ArrVal_187 Int) (v_ArrVal_164 Int) (v_ArrVal_186 Int) (v_ArrVal_173 Int) (v_ArrVal_171 Int) (v_ArrVal_193 Int) (v_ArrVal_181 Int) (v_ArrVal_191 Int)) (let ((.cse0 (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_#memory_int| |ULTIMATE.start_main_~#array~0#1.base|) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod |c_ULTIMATE.start_main_~index~0#1| 4294967296) 4)) |c_ULTIMATE.start_main_~tmp~0#1|) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 1) 4294967296))) (+ 2 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) v_ArrVal_164) (+ (* 4 (mod (+ 3 |c_ULTIMATE.start_main_~index~0#1|) 4294967296)) |ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_166) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 4) 4294967296))) v_ArrVal_167) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 5 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) v_ArrVal_169) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 6 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) v_ArrVal_171) (+ (* (mod (+ 7 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_173) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 8) 4294967296)) |ULTIMATE.start_main_~#array~0#1.offset|) (+ 16 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* (mod (+ 9 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |ULTIMATE.start_main_~#array~0#1.offset|) (+ 18 |c_ULTIMATE.start_main_~tmp~0#1|)) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 10) 4294967296) 4) |ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_179) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 11) 4294967296) 4)) v_ArrVal_181) (+ (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 12) 4294967296)) |ULTIMATE.start_main_~#array~0#1.offset|) (+ |c_ULTIMATE.start_main_~tmp~0#1| 24)) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* 4 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 13) 4294967296))) v_ArrVal_186) (+ (* (mod (+ 14 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4) |ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_187) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 15) 4294967296) 4)) v_ArrVal_189) (+ |ULTIMATE.start_main_~#array~0#1.offset| (* (mod (+ 16 |c_ULTIMATE.start_main_~index~0#1|) 4294967296) 4)) v_ArrVal_191) (+ (* .cse1 4) |ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_193))) (or (= 2 (mod (select .cse0 (+ |ULTIMATE.start_main_~#array~0#1.offset| 4)) 4294967296)) (not (= (mod (select .cse0 |ULTIMATE.start_main_~#array~0#1.offset|) 4294967296) 0))))) (not (< .cse1 10000)) (< (mod (+ |c_ULTIMATE.start_main_~index~0#1| 18) 4294967296) 10000))) is different from true [2022-12-13 15:25:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 2 proven. 120 refuted. 2 times theorem prover too weak. 0 trivial. 51 not checked. [2022-12-13 15:25:33,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860373856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:25:33,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:25:33,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 27] total 66 [2022-12-13 15:25:33,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418339828] [2022-12-13 15:25:33,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:33,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-12-13 15:25:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-12-13 15:25:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=3080, Unknown=10, NotChecked=372, Total=4290 [2022-12-13 15:25:33,047 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 66 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:25:49,130 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 176 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:26:10,816 WARN L233 SmtUtils]: Spent 21.58s on a formula simplification. DAG size of input: 164 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:26:12,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 15:30:33,565 WARN L233 SmtUtils]: Spent 4.20m on a formula simplification. DAG size of input: 452 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:30:38,141 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] [2022-12-13 15:37:18,811 WARN L233 SmtUtils]: Spent 6.45m on a formula simplification. DAG size of input: 417 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)