./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8 --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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- 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-e04fb08 [2022-11-16 12:35:32,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:35:32,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:35:32,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:35:32,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:35:32,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:35:32,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:35:32,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:35:32,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:35:32,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:35:32,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:35:32,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:35:32,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:35:32,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:35:32,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:35:32,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:35:32,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:35:32,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:35:32,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:35:32,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:35:32,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:35:32,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:35:32,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:35:32,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:35:32,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:35:32,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:35:32,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:35:32,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:35:32,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:35:32,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:35:32,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:35:32,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:35:32,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:35:32,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:35:32,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:35:32,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:35:32,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:35:32,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:35:32,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:35:32,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:35:32,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:35:32,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:35:32,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:35:32,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:35:32,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:35:32,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:35:32,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:35:32,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:35:32,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:35:32,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:35:32,594 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:35:32,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:35:32,594 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:35:32,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:35:32,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:35:32,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:35:32,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:35:32,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:35:32,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:35:32,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:35:32,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:35:32,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:35:32,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:35:32,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:35:32,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:35:32,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:35:32,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:32,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:35:32,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:35:32,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:35:32,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:35:32,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:35:32,600 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:35:32,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:35:32,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:35:32,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-11-16 12:35:32,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:35:32,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:35:32,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:35:32,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:35:32,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:35:32,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-16 12:35:32,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/data/b6b516f1f/27c6f9a034a8466285ab1f2aef896d4c/FLAG4ad6b5d4f [2022-11-16 12:35:33,677 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:35:33,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-16 12:35:33,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/data/b6b516f1f/27c6f9a034a8466285ab1f2aef896d4c/FLAG4ad6b5d4f [2022-11-16 12:35:33,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/data/b6b516f1f/27c6f9a034a8466285ab1f2aef896d4c [2022-11-16 12:35:33,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:35:33,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:35:33,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:33,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:35:33,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:35:33,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:33" (1/1) ... [2022-11-16 12:35:33,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c95a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:33, skipping insertion in model container [2022-11-16 12:35:33,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:33" (1/1) ... [2022-11-16 12:35:33,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:35:33,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:35:34,661 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-16 12:35:34,683 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-16 12:35:34,829 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-16 12:35:34,830 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-16 12:35:34,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:34,843 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:35:34,871 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-16 12:35:34,873 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-16 12:35:34,940 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-16 12:35:34,946 WARN L229 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_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-16 12:35:34,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:35,053 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:35:35,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35 WrapperNode [2022-11-16 12:35:35,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:35,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:35,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:35:35,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:35:35,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,170 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1036 [2022-11-16 12:35:35,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:35,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:35:35,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:35:35,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:35:35,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:35:35,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:35:35,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:35:35,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:35:35,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (1/1) ... [2022-11-16 12:35:35,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:35,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:35:35,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:35:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:35:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 12:35:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:35:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:35:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-16 12:35:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-16 12:35:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:35:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:35:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:35:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:35:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:35:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:35:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-16 12:35:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-16 12:35:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:35:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-16 12:35:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-16 12:35:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:35:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:35:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:35:35,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:35:35,706 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:35:37,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:35:37,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:35:37,271 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-16 12:35:37,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:37 BoogieIcfgContainer [2022-11-16 12:35:37,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:35:37,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:35:37,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:35:37,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:35:37,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:35:33" (1/3) ... [2022-11-16 12:35:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da9a8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:37, skipping insertion in model container [2022-11-16 12:35:37,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:35" (2/3) ... [2022-11-16 12:35:37,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da9a8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:37, skipping insertion in model container [2022-11-16 12:35:37,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:37" (3/3) ... [2022-11-16 12:35:37,289 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2022-11-16 12:35:37,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:35:37,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:35:37,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:37,414 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;@49c7ba35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:37,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:35:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 201 states have (on average 1.63681592039801) internal successors, (329), 205 states have internal predecessors, (329), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:35:37,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:35:37,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:37,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:37,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash -927886968, now seen corresponding path program 1 times [2022-11-16 12:35:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:37,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712597237] [2022-11-16 12:35:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712597237] [2022-11-16 12:35:37,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712597237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:37,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:37,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:35:37,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693390050] [2022-11-16 12:35:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:37,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:35:37,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:35:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:35:37,743 INFO L87 Difference]: Start difference. First operand has 223 states, 201 states have (on average 1.63681592039801) internal successors, (329), 205 states have internal predecessors, (329), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:37,840 INFO L93 Difference]: Finished difference Result 441 states and 718 transitions. [2022-11-16 12:35:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:35:37,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-16 12:35:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:37,859 INFO L225 Difference]: With dead ends: 441 [2022-11-16 12:35:37,860 INFO L226 Difference]: Without dead ends: 216 [2022-11-16 12:35:37,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:35:37,867 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:37,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-16 12:35:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-16 12:35:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 195 states have (on average 1.2974358974358975) internal successors, (253), 200 states have internal predecessors, (253), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:35:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 278 transitions. [2022-11-16 12:35:37,924 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 278 transitions. Word has length 8 [2022-11-16 12:35:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:37,924 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 278 transitions. [2022-11-16 12:35:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 278 transitions. [2022-11-16 12:35:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:35:37,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:37,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:37,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:35:37,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1603506083, now seen corresponding path program 1 times [2022-11-16 12:35:37,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:37,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951511400] [2022-11-16 12:35:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:37,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:38,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951511400] [2022-11-16 12:35:38,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951511400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:38,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:38,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:35:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263919094] [2022-11-16 12:35:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:38,179 INFO L87 Difference]: Start difference. First operand 216 states and 278 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:38,654 INFO L93 Difference]: Finished difference Result 453 states and 587 transitions. [2022-11-16 12:35:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:38,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2022-11-16 12:35:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:38,657 INFO L225 Difference]: With dead ends: 453 [2022-11-16 12:35:38,657 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 12:35:38,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:35:38,659 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 153 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:38,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 700 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:35:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 12:35:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 218. [2022-11-16 12:35:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 197 states have (on average 1.2944162436548223) internal successors, (255), 202 states have internal predecessors, (255), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:35:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 280 transitions. [2022-11-16 12:35:38,695 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 280 transitions. Word has length 10 [2022-11-16 12:35:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:38,697 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 280 transitions. [2022-11-16 12:35:38,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 280 transitions. [2022-11-16 12:35:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:35:38,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:38,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:35:38,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1294374422, now seen corresponding path program 1 times [2022-11-16 12:35:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462335663] [2022-11-16 12:35:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:38,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:38,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055474357] [2022-11-16 12:35:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:38,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:38,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:38,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:38,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:35:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:39,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:35:39,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:39,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:39,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462335663] [2022-11-16 12:35:39,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055474357] [2022-11-16 12:35:39,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055474357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:39,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:39,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144194659] [2022-11-16 12:35:39,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:39,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:39,104 INFO L87 Difference]: Start difference. First operand 218 states and 280 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:39,224 INFO L93 Difference]: Finished difference Result 453 states and 587 transitions. [2022-11-16 12:35:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-16 12:35:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:39,226 INFO L225 Difference]: With dead ends: 453 [2022-11-16 12:35:39,226 INFO L226 Difference]: Without dead ends: 239 [2022-11-16 12:35:39,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:39,231 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 9 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:39,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 501 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-16 12:35:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2022-11-16 12:35:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 217 states have (on average 1.2672811059907834) internal successors, (275), 222 states have internal predecessors, (275), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:35:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 300 transitions. [2022-11-16 12:35:39,261 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 300 transitions. Word has length 47 [2022-11-16 12:35:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:39,262 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 300 transitions. [2022-11-16 12:35:39,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 300 transitions. [2022-11-16 12:35:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:35:39,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:39,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:39,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:39,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:39,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1153825812, now seen corresponding path program 1 times [2022-11-16 12:35:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:39,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666889404] [2022-11-16 12:35:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:39,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:39,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025859946] [2022-11-16 12:35:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:39,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:39,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:39,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:35:39,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:39,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:39,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666889404] [2022-11-16 12:35:39,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:39,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025859946] [2022-11-16 12:35:39,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025859946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:39,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:39,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:35:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114453461] [2022-11-16 12:35:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:39,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:39,825 INFO L87 Difference]: Start difference. First operand 238 states and 300 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:39,925 INFO L93 Difference]: Finished difference Result 465 states and 589 transitions. [2022-11-16 12:35:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:39,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-16 12:35:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:39,927 INFO L225 Difference]: With dead ends: 465 [2022-11-16 12:35:39,927 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 12:35:39,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:35:39,931 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 227 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:39,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 550 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:39,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 12:35:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2022-11-16 12:35:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 203 states have (on average 1.251231527093596) internal successors, (254), 208 states have internal predecessors, (254), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:35:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 279 transitions. [2022-11-16 12:35:39,963 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 279 transitions. Word has length 47 [2022-11-16 12:35:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:39,965 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 279 transitions. [2022-11-16 12:35:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 279 transitions. [2022-11-16 12:35:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:35:39,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:39,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:39,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:40,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1711391966, now seen corresponding path program 1 times [2022-11-16 12:35:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925993876] [2022-11-16 12:35:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:40,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:40,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812603148] [2022-11-16 12:35:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:40,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:40,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:40,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:35:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:41,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:35:41,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:41,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:41,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:41,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925993876] [2022-11-16 12:35:41,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:41,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812603148] [2022-11-16 12:35:41,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812603148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:41,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:41,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:35:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121489987] [2022-11-16 12:35:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:35:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:35:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:35:41,344 INFO L87 Difference]: Start difference. First operand 224 states and 279 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:41,884 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2022-11-16 12:35:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:35:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-16 12:35:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:41,886 INFO L225 Difference]: With dead ends: 237 [2022-11-16 12:35:41,886 INFO L226 Difference]: Without dead ends: 235 [2022-11-16 12:35:41,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:35:41,887 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 449 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:41,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1243 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:35:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-16 12:35:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2022-11-16 12:35:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 210 states have (on average 1.2476190476190476) internal successors, (262), 216 states have internal predecessors, (262), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:35:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 289 transitions. [2022-11-16 12:35:41,900 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 289 transitions. Word has length 47 [2022-11-16 12:35:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:41,901 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 289 transitions. [2022-11-16 12:35:41,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 289 transitions. [2022-11-16 12:35:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:35:41,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:41,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:41,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:42,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1570252530, now seen corresponding path program 1 times [2022-11-16 12:35:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306572406] [2022-11-16 12:35:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:42,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:42,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128494883] [2022-11-16 12:35:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:42,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:42,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:42,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:35:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:42,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:35:42,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:42,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306572406] [2022-11-16 12:35:42,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128494883] [2022-11-16 12:35:42,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128494883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:42,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:42,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387890083] [2022-11-16 12:35:42,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:42,943 INFO L87 Difference]: Start difference. First operand 234 states and 289 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:42,965 INFO L93 Difference]: Finished difference Result 465 states and 576 transitions. [2022-11-16 12:35:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:42,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-16 12:35:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:42,967 INFO L225 Difference]: With dead ends: 465 [2022-11-16 12:35:42,967 INFO L226 Difference]: Without dead ends: 235 [2022-11-16 12:35:42,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:42,968 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:42,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 535 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-16 12:35:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-11-16 12:35:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 211 states have (on average 1.2464454976303319) internal successors, (263), 217 states have internal predecessors, (263), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:35:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 290 transitions. [2022-11-16 12:35:42,980 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 290 transitions. Word has length 58 [2022-11-16 12:35:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:42,981 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 290 transitions. [2022-11-16 12:35:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 290 transitions. [2022-11-16 12:35:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:35:42,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:42,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:42,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:43,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:35:43,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1963279540, now seen corresponding path program 1 times [2022-11-16 12:35:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:43,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668429216] [2022-11-16 12:35:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:43,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:43,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136605512] [2022-11-16 12:35:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:43,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:43,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:35:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:44,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:44,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:44,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668429216] [2022-11-16 12:35:44,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136605512] [2022-11-16 12:35:44,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136605512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:44,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:44,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744999714] [2022-11-16 12:35:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:44,294 INFO L87 Difference]: Start difference. First operand 235 states and 290 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:44,449 INFO L93 Difference]: Finished difference Result 588 states and 730 transitions. [2022-11-16 12:35:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:44,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-16 12:35:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:44,452 INFO L225 Difference]: With dead ends: 588 [2022-11-16 12:35:44,452 INFO L226 Difference]: Without dead ends: 357 [2022-11-16 12:35:44,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:44,454 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 106 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:44,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 556 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-16 12:35:44,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 343. [2022-11-16 12:35:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 319 states have (on average 1.2476489028213167) internal successors, (398), 325 states have internal predecessors, (398), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:35:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 425 transitions. [2022-11-16 12:35:44,480 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 425 transitions. Word has length 58 [2022-11-16 12:35:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:44,482 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 425 transitions. [2022-11-16 12:35:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 425 transitions. [2022-11-16 12:35:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:35:44,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:44,487 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:44,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:44,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:35:44,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 587872756, now seen corresponding path program 1 times [2022-11-16 12:35:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542870045] [2022-11-16 12:35:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:44,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016559667] [2022-11-16 12:35:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:44,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:44,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:44,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:35:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:45,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:35:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:45,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:45,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542870045] [2022-11-16 12:35:45,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:45,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016559667] [2022-11-16 12:35:45,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016559667] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:45,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:45,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-11-16 12:35:45,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239029963] [2022-11-16 12:35:45,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:35:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:35:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:35:45,586 INFO L87 Difference]: Start difference. First operand 343 states and 425 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:35:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:45,809 INFO L93 Difference]: Finished difference Result 1224 states and 1560 transitions. [2022-11-16 12:35:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:35:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-16 12:35:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:45,817 INFO L225 Difference]: With dead ends: 1224 [2022-11-16 12:35:45,818 INFO L226 Difference]: Without dead ends: 930 [2022-11-16 12:35:45,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:35:45,819 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 925 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:45,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1149 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-16 12:35:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 571. [2022-11-16 12:35:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 542 states have (on average 1.2601476014760147) internal successors, (683), 548 states have internal predecessors, (683), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 12:35:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 715 transitions. [2022-11-16 12:35:45,858 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 715 transitions. Word has length 62 [2022-11-16 12:35:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:45,858 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 715 transitions. [2022-11-16 12:35:45,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:35:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 715 transitions. [2022-11-16 12:35:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 12:35:45,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:45,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:45,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:35:46,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash 391994033, now seen corresponding path program 1 times [2022-11-16 12:35:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580621422] [2022-11-16 12:35:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:46,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:46,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025245688] [2022-11-16 12:35:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:46,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:46,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:35:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:46,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:35:46,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:35:46,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580621422] [2022-11-16 12:35:46,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025245688] [2022-11-16 12:35:46,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025245688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:46,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:46,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189257104] [2022-11-16 12:35:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:46,859 INFO L87 Difference]: Start difference. First operand 571 states and 715 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:35:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:47,004 INFO L93 Difference]: Finished difference Result 1074 states and 1354 transitions. [2022-11-16 12:35:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:35:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-11-16 12:35:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:47,008 INFO L225 Difference]: With dead ends: 1074 [2022-11-16 12:35:47,009 INFO L226 Difference]: Without dead ends: 571 [2022-11-16 12:35:47,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:35:47,012 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 25 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:47,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 969 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-16 12:35:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-16 12:35:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 542 states have (on average 1.2601476014760147) internal successors, (683), 548 states have internal predecessors, (683), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 714 transitions. [2022-11-16 12:35:47,043 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 714 transitions. Word has length 93 [2022-11-16 12:35:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:47,044 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 714 transitions. [2022-11-16 12:35:47,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:35:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 714 transitions. [2022-11-16 12:35:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:35:47,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:47,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:47,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:47,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:47,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1931648614, now seen corresponding path program 1 times [2022-11-16 12:35:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:47,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603514157] [2022-11-16 12:35:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:47,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:47,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028846439] [2022-11-16 12:35:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:47,312 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:47,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:35:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:47,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:47,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:47,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:35:47,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:35:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:35:48,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603514157] [2022-11-16 12:35:48,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028846439] [2022-11-16 12:35:48,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028846439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:48,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:48,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:35:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497354222] [2022-11-16 12:35:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:48,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:48,010 INFO L87 Difference]: Start difference. First operand 571 states and 714 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:35:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:48,385 INFO L93 Difference]: Finished difference Result 777 states and 991 transitions. [2022-11-16 12:35:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-11-16 12:35:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:48,392 INFO L225 Difference]: With dead ends: 777 [2022-11-16 12:35:48,392 INFO L226 Difference]: Without dead ends: 764 [2022-11-16 12:35:48,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:35:48,393 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 108 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:48,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 712 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:35:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-16 12:35:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 575. [2022-11-16 12:35:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 546 states have (on average 1.2582417582417582) internal successors, (687), 552 states have internal predecessors, (687), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 718 transitions. [2022-11-16 12:35:48,438 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 718 transitions. Word has length 98 [2022-11-16 12:35:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:48,438 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 718 transitions. [2022-11-16 12:35:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:35:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 718 transitions. [2022-11-16 12:35:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:35:48,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:48,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:48,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:48,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:35:48,649 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1308714049, now seen corresponding path program 1 times [2022-11-16 12:35:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119774548] [2022-11-16 12:35:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:48,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431965462] [2022-11-16 12:35:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:48,706 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:35:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:49,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:35:49,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:35:49,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:49,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119774548] [2022-11-16 12:35:49,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431965462] [2022-11-16 12:35:49,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431965462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:49,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:49,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:35:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949189651] [2022-11-16 12:35:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:35:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:35:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:35:49,809 INFO L87 Difference]: Start difference. First operand 575 states and 718 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:35:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:49,996 INFO L93 Difference]: Finished difference Result 1090 states and 1373 transitions. [2022-11-16 12:35:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:35:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 108 [2022-11-16 12:35:49,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:49,999 INFO L225 Difference]: With dead ends: 1090 [2022-11-16 12:35:50,000 INFO L226 Difference]: Without dead ends: 580 [2022-11-16 12:35:50,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:35:50,002 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 18 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:50,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1767 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-16 12:35:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-11-16 12:35:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 550 states have (on average 1.2581818181818183) internal successors, (692), 557 states have internal predecessors, (692), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 12:35:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 724 transitions. [2022-11-16 12:35:50,032 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 724 transitions. Word has length 108 [2022-11-16 12:35:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 724 transitions. [2022-11-16 12:35:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:35:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 724 transitions. [2022-11-16 12:35:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 12:35:50,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:50,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:50,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:50,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:50,245 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2136005715, now seen corresponding path program 1 times [2022-11-16 12:35:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587359807] [2022-11-16 12:35:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:50,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062275063] [2022-11-16 12:35:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:50,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:50,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:50,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:35:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:35:52,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:35:52,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:35:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587359807] [2022-11-16 12:35:52,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062275063] [2022-11-16 12:35:52,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062275063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:52,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:35:52,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-11-16 12:35:52,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999543983] [2022-11-16 12:35:52,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:35:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:35:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:35:52,746 INFO L87 Difference]: Start difference. First operand 580 states and 724 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:35:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:53,146 INFO L93 Difference]: Finished difference Result 1113 states and 1405 transitions. [2022-11-16 12:35:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:35:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2022-11-16 12:35:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:53,150 INFO L225 Difference]: With dead ends: 1113 [2022-11-16 12:35:53,150 INFO L226 Difference]: Without dead ends: 596 [2022-11-16 12:35:53,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:35:53,152 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 33 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:53,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2279 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:35:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-16 12:35:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 593. [2022-11-16 12:35:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 562 states have (on average 1.2633451957295374) internal successors, (710), 569 states have internal predecessors, (710), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 12:35:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 742 transitions. [2022-11-16 12:35:53,187 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 742 transitions. Word has length 110 [2022-11-16 12:35:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 742 transitions. [2022-11-16 12:35:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:35:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 742 transitions. [2022-11-16 12:35:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 12:35:53,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:53,189 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:53,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:35:53,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:35:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1680231647, now seen corresponding path program 2 times [2022-11-16 12:35:53,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655883742] [2022-11-16 12:35:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897346131] [2022-11-16 12:35:53,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:35:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:53,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:53,472 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:53,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:36:03,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:03,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:03,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:36:03,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:36:03,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 12:36:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655883742] [2022-11-16 12:36:04,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897346131] [2022-11-16 12:36:04,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897346131] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:04,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:04,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-11-16 12:36:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030470189] [2022-11-16 12:36:04,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:36:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:36:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:36:04,126 INFO L87 Difference]: Start difference. First operand 593 states and 742 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:36:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:05,572 INFO L93 Difference]: Finished difference Result 1206 states and 1522 transitions. [2022-11-16 12:36:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:36:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2022-11-16 12:36:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:05,579 INFO L225 Difference]: With dead ends: 1206 [2022-11-16 12:36:05,580 INFO L226 Difference]: Without dead ends: 611 [2022-11-16 12:36:05,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:36:05,583 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 299 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:05,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2803 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:36:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-16 12:36:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 599. [2022-11-16 12:36:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 568 states have (on average 1.2605633802816902) internal successors, (716), 575 states have internal predecessors, (716), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-16 12:36:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 748 transitions. [2022-11-16 12:36:05,624 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 748 transitions. Word has length 114 [2022-11-16 12:36:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:05,625 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 748 transitions. [2022-11-16 12:36:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:36:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 748 transitions. [2022-11-16 12:36:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:36:05,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:05,627 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:05,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:05,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:36:05,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:36:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1996387754, now seen corresponding path program 3 times [2022-11-16 12:36:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:05,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127574073] [2022-11-16 12:36:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:05,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:05,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915723291] [2022-11-16 12:36:05,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:36:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:05,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:05,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a36d5e48-9c9c-4f8a-9fdb-23cf9baae716/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process