./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX --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 64bit --witnessprinter.graph.data.programhash 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:46:22,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:46:22,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:46:22,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:46:22,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:46:22,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:46:22,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:46:22,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:46:22,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:46:22,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:46:22,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:46:22,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:46:22,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:46:22,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:46:22,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:46:22,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:46:22,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:46:22,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:46:22,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:46:22,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:46:22,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:46:22,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:46:22,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:46:22,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:46:22,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:46:22,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:46:22,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:46:22,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:46:22,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:46:22,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:46:22,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:46:22,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:46:22,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:46:22,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:46:22,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:46:22,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:46:22,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:46:22,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:46:22,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:46:22,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:46:22,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:46:22,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 08:46:22,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:46:22,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:46:22,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:46:22,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:46:22,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:46:22,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:46:22,865 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:46:22,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:46:22,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:46:22,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:46:22,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:46:22,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:46:22,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:46:22,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:46:22,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:46:22,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:46:22,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:46:22,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:46:22,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:46:22,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:46:22,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:46:22,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:46:22,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:46:22,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:46:22,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:46:22,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:46:22,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:46:22,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:46:22,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:46:22,871 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_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 [2021-11-09 08:46:23,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:46:23,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:46:23,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:46:23,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:46:23,210 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:46:23,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-11-09 08:46:23,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/data/5f601c7a3/bbbcf6df047d4419af5574df66e4b50f/FLAGf0f5a9817 [2021-11-09 08:46:24,270 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:46:24,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-11-09 08:46:24,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/data/5f601c7a3/bbbcf6df047d4419af5574df66e4b50f/FLAGf0f5a9817 [2021-11-09 08:46:24,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/data/5f601c7a3/bbbcf6df047d4419af5574df66e4b50f [2021-11-09 08:46:24,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:46:24,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:46:24,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:46:24,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:46:24,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:46:24,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:46:24" (1/1) ... [2021-11-09 08:46:24,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6955c40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:24, skipping insertion in model container [2021-11-09 08:46:24,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:46:24" (1/1) ... [2021-11-09 08:46:24,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:46:24,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:46:25,266 WARN L228 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_82090102-975f-476f-b3af-85f3f7267214/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2021-11-09 08:46:25,283 WARN L228 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_82090102-975f-476f-b3af-85f3f7267214/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2021-11-09 08:46:25,318 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:46:25,333 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:46:26,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,601 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,635 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,641 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,643 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:26,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:27,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:46:27,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:46:27,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:46:27,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:46:27,344 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:46:27,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:46:27,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:46:27,346 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:46:27,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:46:27,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:46:27,645 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:46:28,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,099 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:46:28,170 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:46:28,186 WARN L228 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_82090102-975f-476f-b3af-85f3f7267214/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2021-11-09 08:46:28,187 WARN L228 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_82090102-975f-476f-b3af-85f3f7267214/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2021-11-09 08:46:28,189 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:46:28,190 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:46:28,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:46:28,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:46:28,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:46:28,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:46:28,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:46:28,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:46:28,349 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:46:28,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:46:28,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:46:28,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:46:28,389 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:46:28,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:46:28,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:46:29,074 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:46:29,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29 WrapperNode [2021-11-09 08:46:29,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:46:29,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:46:29,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:46:29,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:46:29,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:46:29,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:46:29,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:46:29,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:46:29,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:46:29,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:46:29,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:46:29,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:46:29,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (1/1) ... [2021-11-09 08:46:29,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:46:29,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:29,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:46:29,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-09 08:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:46:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:46:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-09 08:46:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:46:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-09 08:46:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:46:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:46:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:46:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 08:46:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:46:41,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:46:41,690 INFO L299 CfgBuilder]: Removed 167 assume(true) statements. [2021-11-09 08:46:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:46:41 BoogieIcfgContainer [2021-11-09 08:46:41,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:46:41,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:46:41,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:46:41,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:46:41,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:46:24" (1/3) ... [2021-11-09 08:46:41,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d64c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:46:41, skipping insertion in model container [2021-11-09 08:46:41,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:46:29" (2/3) ... [2021-11-09 08:46:41,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d64c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:46:41, skipping insertion in model container [2021-11-09 08:46:41,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:46:41" (3/3) ... [2021-11-09 08:46:41,710 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2021-11-09 08:46:41,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:46:41,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-09 08:46:41,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:46:41,784 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:46:41,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-09 08:46:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 239 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:46:41,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:41,852 INFO L513 BasicCegarLoop]: 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, 1, 1, 1] [2021-11-09 08:46:41,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -731406764, now seen corresponding path program 1 times [2021-11-09 08:46:41,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:41,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608030826] [2021-11-09 08:46:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:41,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:42,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:42,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608030826] [2021-11-09 08:46:42,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608030826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:42,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:42,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:46:42,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939832579] [2021-11-09 08:46:42,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:46:42,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:42,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:46:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:46:42,747 INFO L87 Difference]: Start difference. First operand has 240 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 239 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:42,794 INFO L93 Difference]: Finished difference Result 476 states and 679 transitions. [2021-11-09 08:46:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:46:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 08:46:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:42,810 INFO L225 Difference]: With dead ends: 476 [2021-11-09 08:46:42,810 INFO L226 Difference]: Without dead ends: 234 [2021-11-09 08:46:42,814 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:46:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-09 08:46:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-09 08:46:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 233 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 316 transitions. [2021-11-09 08:46:42,873 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 316 transitions. Word has length 61 [2021-11-09 08:46:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:42,874 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 316 transitions. [2021-11-09 08:46:42,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 316 transitions. [2021-11-09 08:46:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:46:42,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:42,879 INFO L513 BasicCegarLoop]: 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, 1, 1, 1] [2021-11-09 08:46:42,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:46:42,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:42,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1678373439, now seen corresponding path program 1 times [2021-11-09 08:46:42,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:42,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913449748] [2021-11-09 08:46:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:42,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:43,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:43,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150044131] [2021-11-09 08:46:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:43,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:43,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:43,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:46:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:46:44,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:44,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:44,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913449748] [2021-11-09 08:46:44,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:44,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150044131] [2021-11-09 08:46:44,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150044131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:44,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:44,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:46:44,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748200916] [2021-11-09 08:46:44,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:46:44,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:46:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:46:44,954 INFO L87 Difference]: Start difference. First operand 234 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:45,338 INFO L93 Difference]: Finished difference Result 409 states and 554 transitions. [2021-11-09 08:46:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:46:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 08:46:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:45,343 INFO L225 Difference]: With dead ends: 409 [2021-11-09 08:46:45,343 INFO L226 Difference]: Without dead ends: 234 [2021-11-09 08:46:45,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:46:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-09 08:46:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-09 08:46:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3938053097345133) internal successors, (315), 233 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 315 transitions. [2021-11-09 08:46:45,368 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 315 transitions. Word has length 61 [2021-11-09 08:46:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:45,368 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 315 transitions. [2021-11-09 08:46:45,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 315 transitions. [2021-11-09 08:46:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:46:45,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:45,372 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-11-09 08:46:45,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:45,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:45,589 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1040099631, now seen corresponding path program 1 times [2021-11-09 08:46:45,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:45,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878447114] [2021-11-09 08:46:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:45,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:45,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:45,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249418506] [2021-11-09 08:46:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:45,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:45,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:45,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:45,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:46:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:46,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:46:46,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:47,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:47,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878447114] [2021-11-09 08:46:47,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:47,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249418506] [2021-11-09 08:46:47,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249418506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:47,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:47,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:46:47,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089334361] [2021-11-09 08:46:47,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:46:47,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:46:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:46:47,361 INFO L87 Difference]: Start difference. First operand 234 states and 315 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:47,766 INFO L93 Difference]: Finished difference Result 370 states and 498 transitions. [2021-11-09 08:46:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:46:47,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-09 08:46:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:47,769 INFO L225 Difference]: With dead ends: 370 [2021-11-09 08:46:47,770 INFO L226 Difference]: Without dead ends: 241 [2021-11-09 08:46:47,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:46:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-09 08:46:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-11-09 08:46:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3849557522123894) internal successors, (313), 233 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 313 transitions. [2021-11-09 08:46:47,792 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 313 transitions. Word has length 62 [2021-11-09 08:46:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:47,792 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 313 transitions. [2021-11-09 08:46:47,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 313 transitions. [2021-11-09 08:46:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-09 08:46:47,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:47,796 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1] [2021-11-09 08:46:47,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:48,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:48,017 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1709964241, now seen corresponding path program 1 times [2021-11-09 08:46:48,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:48,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831570181] [2021-11-09 08:46:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:48,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:48,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:48,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997288089] [2021-11-09 08:46:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:48,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:48,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:48,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:46:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:49,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:46:49,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:49,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:49,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831570181] [2021-11-09 08:46:49,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:49,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997288089] [2021-11-09 08:46:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997288089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:49,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:49,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:46:49,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125360356] [2021-11-09 08:46:49,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:46:49,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:46:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:46:49,793 INFO L87 Difference]: Start difference. First operand 234 states and 313 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:50,467 INFO L93 Difference]: Finished difference Result 324 states and 431 transitions. [2021-11-09 08:46:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:46:50,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-09 08:46:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:50,470 INFO L225 Difference]: With dead ends: 324 [2021-11-09 08:46:50,471 INFO L226 Difference]: Without dead ends: 234 [2021-11-09 08:46:50,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:46:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-09 08:46:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-09 08:46:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 226 states have (on average 1.3761061946902655) internal successors, (311), 233 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2021-11-09 08:46:50,488 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 63 [2021-11-09 08:46:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:50,488 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2021-11-09 08:46:50,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2021-11-09 08:46:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:46:50,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:50,492 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:50,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:50,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:50,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:50,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1469524672, now seen corresponding path program 1 times [2021-11-09 08:46:50,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:50,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773183427] [2021-11-09 08:46:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:50,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:50,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:50,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262100345] [2021-11-09 08:46:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:50,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:50,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:46:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:51,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:46:51,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:52,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:52,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773183427] [2021-11-09 08:46:52,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:52,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262100345] [2021-11-09 08:46:52,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262100345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:52,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:52,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:46:52,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671321298] [2021-11-09 08:46:52,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:46:52,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:46:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:46:52,281 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:52,444 INFO L93 Difference]: Finished difference Result 664 states and 889 transitions. [2021-11-09 08:46:52,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:46:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 08:46:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:52,448 INFO L225 Difference]: With dead ends: 664 [2021-11-09 08:46:52,449 INFO L226 Difference]: Without dead ends: 452 [2021-11-09 08:46:52,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:46:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-09 08:46:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 240. [2021-11-09 08:46:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 239 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2021-11-09 08:46:52,467 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 64 [2021-11-09 08:46:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:52,468 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2021-11-09 08:46:52,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2021-11-09 08:46:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 08:46:52,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:52,472 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:52,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:52,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:52,686 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1562966360, now seen corresponding path program 1 times [2021-11-09 08:46:52,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:52,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761382240] [2021-11-09 08:46:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:52,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:53,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:53,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761382240] [2021-11-09 08:46:53,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761382240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:53,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:53,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:46:53,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243227134] [2021-11-09 08:46:53,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:46:53,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:46:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:46:53,300 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:59,128 INFO L93 Difference]: Finished difference Result 532 states and 706 transitions. [2021-11-09 08:46:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:46:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 08:46:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:59,133 INFO L225 Difference]: With dead ends: 532 [2021-11-09 08:46:59,133 INFO L226 Difference]: Without dead ends: 330 [2021-11-09 08:46:59,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:46:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-09 08:46:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 242. [2021-11-09 08:46:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 234 states have (on average 1.3632478632478633) internal successors, (319), 241 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 319 transitions. [2021-11-09 08:46:59,155 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 319 transitions. Word has length 68 [2021-11-09 08:46:59,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:59,156 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 319 transitions. [2021-11-09 08:46:59,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 319 transitions. [2021-11-09 08:46:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 08:46:59,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:59,158 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:59,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:46:59,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -803728234, now seen corresponding path program 1 times [2021-11-09 08:46:59,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:59,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040104849] [2021-11-09 08:46:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:59,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:59,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:59,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040104849] [2021-11-09 08:46:59,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040104849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:59,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:59,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:46:59,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414383141] [2021-11-09 08:46:59,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:46:59,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:46:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:46:59,489 INFO L87 Difference]: Start difference. First operand 242 states and 319 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:59,712 INFO L93 Difference]: Finished difference Result 447 states and 595 transitions. [2021-11-09 08:46:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:46:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 08:46:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:59,716 INFO L225 Difference]: With dead ends: 447 [2021-11-09 08:46:59,716 INFO L226 Difference]: Without dead ends: 240 [2021-11-09 08:46:59,717 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:46:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-09 08:46:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-09 08:46:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.353448275862069) internal successors, (314), 239 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-09 08:46:59,733 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 68 [2021-11-09 08:46:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:59,734 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-09 08:46:59,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:46:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-09 08:46:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:46:59,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:59,736 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:46:59,736 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:46:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -59877347, now seen corresponding path program 1 times [2021-11-09 08:46:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:59,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162428381] [2021-11-09 08:46:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:59,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:00,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:00,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162428381] [2021-11-09 08:47:00,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162428381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:00,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:00,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:47:00,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349646708] [2021-11-09 08:47:00,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:47:00,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:47:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:00,129 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:05,364 INFO L93 Difference]: Finished difference Result 450 states and 593 transitions. [2021-11-09 08:47:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:47:05,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-09 08:47:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:05,368 INFO L225 Difference]: With dead ends: 450 [2021-11-09 08:47:05,368 INFO L226 Difference]: Without dead ends: 247 [2021-11-09 08:47:05,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:47:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-09 08:47:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-11-09 08:47:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 239 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 306 transitions. [2021-11-09 08:47:05,388 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 306 transitions. Word has length 70 [2021-11-09 08:47:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:05,391 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 306 transitions. [2021-11-09 08:47:05,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 306 transitions. [2021-11-09 08:47:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:47:05,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:05,393 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:05,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:47:05,394 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -168398452, now seen corresponding path program 1 times [2021-11-09 08:47:05,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:05,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64057371] [2021-11-09 08:47:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:05,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:05,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:05,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64057371] [2021-11-09 08:47:05,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64057371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:05,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:05,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:47:05,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015213750] [2021-11-09 08:47:05,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:47:05,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:47:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:05,917 INFO L87 Difference]: Start difference. First operand 240 states and 306 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:09,064 INFO L93 Difference]: Finished difference Result 471 states and 606 transitions. [2021-11-09 08:47:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-09 08:47:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:09,068 INFO L225 Difference]: With dead ends: 471 [2021-11-09 08:47:09,068 INFO L226 Difference]: Without dead ends: 293 [2021-11-09 08:47:09,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:47:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-09 08:47:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 255. [2021-11-09 08:47:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.3076923076923077) internal successors, (323), 254 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 323 transitions. [2021-11-09 08:47:09,096 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 323 transitions. Word has length 71 [2021-11-09 08:47:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:09,098 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 323 transitions. [2021-11-09 08:47:09,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 323 transitions. [2021-11-09 08:47:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 08:47:09,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:09,099 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:09,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:47:09,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1844150629, now seen corresponding path program 1 times [2021-11-09 08:47:09,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:09,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998704955] [2021-11-09 08:47:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:09,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:09,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:09,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997563977] [2021-11-09 08:47:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:09,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:09,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:09,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:47:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:47:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:10,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:10,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998704955] [2021-11-09 08:47:10,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:10,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997563977] [2021-11-09 08:47:10,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997563977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:10,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:10,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:47:10,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197763626] [2021-11-09 08:47:10,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:47:10,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:47:10,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:10,662 INFO L87 Difference]: Start difference. First operand 255 states and 323 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:10,884 INFO L93 Difference]: Finished difference Result 707 states and 901 transitions. [2021-11-09 08:47:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-09 08:47:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:10,888 INFO L225 Difference]: With dead ends: 707 [2021-11-09 08:47:10,888 INFO L226 Difference]: Without dead ends: 477 [2021-11-09 08:47:10,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:47:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-09 08:47:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 261. [2021-11-09 08:47:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 253 states have (on average 1.300395256916996) internal successors, (329), 260 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 329 transitions. [2021-11-09 08:47:10,911 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 329 transitions. Word has length 80 [2021-11-09 08:47:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:10,912 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 329 transitions. [2021-11-09 08:47:10,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 329 transitions. [2021-11-09 08:47:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 08:47:10,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:10,914 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:10,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:11,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:47:11,129 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1941343577, now seen corresponding path program 1 times [2021-11-09 08:47:11,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:11,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938594694] [2021-11-09 08:47:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:11,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:11,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:11,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702584058] [2021-11-09 08:47:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:11,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:11,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:11,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:47:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:47:12,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:12,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:12,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938594694] [2021-11-09 08:47:12,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:12,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702584058] [2021-11-09 08:47:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702584058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:12,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:12,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:47:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129221133] [2021-11-09 08:47:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:47:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:47:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:47:12,914 INFO L87 Difference]: Start difference. First operand 261 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:14,043 INFO L93 Difference]: Finished difference Result 599 states and 739 transitions. [2021-11-09 08:47:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:47:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-09 08:47:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:14,047 INFO L225 Difference]: With dead ends: 599 [2021-11-09 08:47:14,047 INFO L226 Difference]: Without dead ends: 375 [2021-11-09 08:47:14,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:47:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-09 08:47:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 253. [2021-11-09 08:47:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 245 states have (on average 1.2571428571428571) internal successors, (308), 252 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2021-11-09 08:47:14,071 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 80 [2021-11-09 08:47:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:14,072 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2021-11-09 08:47:14,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2021-11-09 08:47:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 08:47:14,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:14,074 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:14,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:14,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 08:47:14,301 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:14,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash 757959968, now seen corresponding path program 1 times [2021-11-09 08:47:14,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:14,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024812624] [2021-11-09 08:47:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:14,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:15,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:15,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024812624] [2021-11-09 08:47:15,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024812624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:15,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:15,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:47:15,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923140754] [2021-11-09 08:47:15,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:47:15,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:47:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:47:15,579 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:26,298 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2021-11-09 08:47:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:47:26,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-09 08:47:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:26,303 INFO L225 Difference]: With dead ends: 527 [2021-11-09 08:47:26,303 INFO L226 Difference]: Without dead ends: 431 [2021-11-09 08:47:26,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:47:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-09 08:47:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 306. [2021-11-09 08:47:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.2483221476510067) internal successors, (372), 305 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 372 transitions. [2021-11-09 08:47:26,333 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 372 transitions. Word has length 96 [2021-11-09 08:47:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:26,334 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 372 transitions. [2021-11-09 08:47:26,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 372 transitions. [2021-11-09 08:47:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 08:47:26,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:26,336 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:26,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:47:26,336 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1910937092, now seen corresponding path program 1 times [2021-11-09 08:47:26,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:26,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689605584] [2021-11-09 08:47:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:26,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:27,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:27,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689605584] [2021-11-09 08:47:27,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689605584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:27,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:27,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:47:27,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165122] [2021-11-09 08:47:27,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:47:27,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:47:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:47:27,588 INFO L87 Difference]: Start difference. First operand 306 states and 372 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:27,755 INFO L93 Difference]: Finished difference Result 335 states and 411 transitions. [2021-11-09 08:47:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-09 08:47:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:27,758 INFO L225 Difference]: With dead ends: 335 [2021-11-09 08:47:27,759 INFO L226 Difference]: Without dead ends: 333 [2021-11-09 08:47:27,759 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:47:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-09 08:47:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 308. [2021-11-09 08:47:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 300 states have (on average 1.2466666666666666) internal successors, (374), 307 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 374 transitions. [2021-11-09 08:47:27,786 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 374 transitions. Word has length 96 [2021-11-09 08:47:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:27,786 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 374 transitions. [2021-11-09 08:47:27,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 374 transitions. [2021-11-09 08:47:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 08:47:27,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:27,788 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:27,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:47:27,789 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1910877510, now seen corresponding path program 1 times [2021-11-09 08:47:27,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:27,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713156126] [2021-11-09 08:47:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:27,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:30,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:30,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713156126] [2021-11-09 08:47:30,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713156126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:30,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:30,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:47:30,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563451848] [2021-11-09 08:47:30,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:47:30,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:47:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:47:30,681 INFO L87 Difference]: Start difference. First operand 308 states and 374 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:30,860 INFO L93 Difference]: Finished difference Result 592 states and 720 transitions. [2021-11-09 08:47:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:47:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-09 08:47:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:30,863 INFO L225 Difference]: With dead ends: 592 [2021-11-09 08:47:30,864 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 08:47:30,864 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:47:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 08:47:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 299. [2021-11-09 08:47:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 291 states have (on average 1.2371134020618557) internal successors, (360), 298 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 360 transitions. [2021-11-09 08:47:30,893 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 360 transitions. Word has length 96 [2021-11-09 08:47:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:30,894 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 360 transitions. [2021-11-09 08:47:30,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 360 transitions. [2021-11-09 08:47:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 08:47:30,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:30,896 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:30,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:47:30,896 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash 88711003, now seen corresponding path program 1 times [2021-11-09 08:47:30,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:30,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881579567] [2021-11-09 08:47:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:30,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:30,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:30,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012318086] [2021-11-09 08:47:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:30,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:30,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:31,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 08:47:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:32,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-09 08:47:32,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:33,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 78 [2021-11-09 08:47:33,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-11-09 08:47:33,448 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 08:47:33,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 55 [2021-11-09 08:47:33,613 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 08:47:33,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2021-11-09 08:47:33,624 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 08:47:33,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19 [2021-11-09 08:47:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:33,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:33,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881579567] [2021-11-09 08:47:33,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:33,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012318086] [2021-11-09 08:47:33,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012318086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:33,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:33,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:47:33,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253747920] [2021-11-09 08:47:33,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:47:33,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:33,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:47:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:47:33,709 INFO L87 Difference]: Start difference. First operand 299 states and 360 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:37,780 INFO L93 Difference]: Finished difference Result 575 states and 705 transitions. [2021-11-09 08:47:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:47:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-09 08:47:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:37,784 INFO L225 Difference]: With dead ends: 575 [2021-11-09 08:47:37,784 INFO L226 Difference]: Without dead ends: 457 [2021-11-09 08:47:37,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:47:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-11-09 08:47:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 315. [2021-11-09 08:47:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 307 states have (on average 1.231270358306189) internal successors, (378), 314 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 378 transitions. [2021-11-09 08:47:37,814 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 378 transitions. Word has length 102 [2021-11-09 08:47:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:37,815 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 378 transitions. [2021-11-09 08:47:37,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 378 transitions. [2021-11-09 08:47:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 08:47:37,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:37,817 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:37,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:38,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 08:47:38,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1714840821, now seen corresponding path program 1 times [2021-11-09 08:47:38,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:38,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696762374] [2021-11-09 08:47:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:38,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:38,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:38,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958980553] [2021-11-09 08:47:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:38,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:38,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:38,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 08:47:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-09 08:47:39,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:40,023 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-09 08:47:40,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-09 08:47:40,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2021-11-09 08:47:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:40,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:40,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696762374] [2021-11-09 08:47:40,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:40,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958980553] [2021-11-09 08:47:40,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958980553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:40,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:40,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:47:40,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973278133] [2021-11-09 08:47:40,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:47:40,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:47:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:47:40,207 INFO L87 Difference]: Start difference. First operand 315 states and 378 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:43,798 INFO L93 Difference]: Finished difference Result 455 states and 556 transitions. [2021-11-09 08:47:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:47:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-09 08:47:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:43,803 INFO L225 Difference]: With dead ends: 455 [2021-11-09 08:47:43,803 INFO L226 Difference]: Without dead ends: 453 [2021-11-09 08:47:43,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:47:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-09 08:47:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 317. [2021-11-09 08:47:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 309 states have (on average 1.233009708737864) internal successors, (381), 316 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 381 transitions. [2021-11-09 08:47:43,839 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 381 transitions. Word has length 102 [2021-11-09 08:47:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:43,839 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 381 transitions. [2021-11-09 08:47:43,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 381 transitions. [2021-11-09 08:47:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 08:47:43,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:43,841 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:43,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 08:47:44,060 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1499636899, now seen corresponding path program 1 times [2021-11-09 08:47:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:44,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729926270] [2021-11-09 08:47:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:44,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:44,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:44,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993960093] [2021-11-09 08:47:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:44,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:44,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:44,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:44,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 08:47:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:45,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:47:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:45,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:45,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729926270] [2021-11-09 08:47:45,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:45,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993960093] [2021-11-09 08:47:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993960093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:45,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:47:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111283132] [2021-11-09 08:47:45,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:47:45,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:47:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:47:45,629 INFO L87 Difference]: Start difference. First operand 317 states and 381 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:45,970 INFO L93 Difference]: Finished difference Result 576 states and 697 transitions. [2021-11-09 08:47:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-09 08:47:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:45,973 INFO L225 Difference]: With dead ends: 576 [2021-11-09 08:47:45,973 INFO L226 Difference]: Without dead ends: 293 [2021-11-09 08:47:45,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-09 08:47:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 249. [2021-11-09 08:47:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.2282157676348548) internal successors, (296), 248 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2021-11-09 08:47:46,001 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 102 [2021-11-09 08:47:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:46,002 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2021-11-09 08:47:46,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2021-11-09 08:47:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 08:47:46,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:46,004 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:46,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:46,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 08:47:46,217 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 591298484, now seen corresponding path program 1 times [2021-11-09 08:47:46,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:46,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443379683] [2021-11-09 08:47:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:46,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:46,325 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:46,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307510786] [2021-11-09 08:47:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:46,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:46,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:46,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:46,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 08:47:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:47,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 08:47:47,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:48,034 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-09 08:47:48,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-09 08:47:48,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2021-11-09 08:47:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:48,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:48,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443379683] [2021-11-09 08:47:48,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:48,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307510786] [2021-11-09 08:47:48,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307510786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:48,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:48,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:47:48,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761143166] [2021-11-09 08:47:48,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:47:48,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:47:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:47:48,159 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:51,209 INFO L93 Difference]: Finished difference Result 431 states and 522 transitions. [2021-11-09 08:47:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:47:51,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-09 08:47:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:51,213 INFO L225 Difference]: With dead ends: 431 [2021-11-09 08:47:51,213 INFO L226 Difference]: Without dead ends: 340 [2021-11-09 08:47:51,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:47:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-09 08:47:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 249. [2021-11-09 08:47:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.2240663900414939) internal successors, (295), 248 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 295 transitions. [2021-11-09 08:47:51,238 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 295 transitions. Word has length 107 [2021-11-09 08:47:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:51,239 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 295 transitions. [2021-11-09 08:47:51,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:47:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 295 transitions. [2021-11-09 08:47:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 08:47:51,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:51,241 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:51,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:47:51,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 08:47:51,454 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:47:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1271356854, now seen corresponding path program 1 times [2021-11-09 08:47:51,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:51,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352795069] [2021-11-09 08:47:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:51,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:51,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:51,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139852400] [2021-11-09 08:47:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:51,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:51,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:51,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:51,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 08:47:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:52,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-09 08:47:52,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,834 INFO L354 Elim1Store]: treesize reduction 254, result has 17.3 percent of original size [2021-11-09 08:47:54,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 168 [2021-11-09 08:47:54,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,216 INFO L354 Elim1Store]: treesize reduction 254, result has 17.3 percent of original size [2021-11-09 08:47:55,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 159 treesize of output 193 [2021-11-09 08:47:55,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,444 INFO L354 Elim1Store]: treesize reduction 150, result has 19.8 percent of original size [2021-11-09 08:47:55,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 184 treesize of output 200 [2021-11-09 08:47:55,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:47:55,671 INFO L354 Elim1Store]: treesize reduction 150, result has 19.8 percent of original size [2021-11-09 08:47:55,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 191 treesize of output 207 [2021-11-09 08:47:57,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 24 [2021-11-09 08:47:57,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2021-11-09 08:47:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:57,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:57,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352795069] [2021-11-09 08:47:57,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:57,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139852400] [2021-11-09 08:47:57,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139852400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:57,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:57,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:47:57,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008120189] [2021-11-09 08:47:57,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:47:57,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:47:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:47:57,114 INFO L87 Difference]: Start difference. First operand 249 states and 295 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:03,105 INFO L93 Difference]: Finished difference Result 318 states and 376 transitions. [2021-11-09 08:48:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:48:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-09 08:48:03,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:03,108 INFO L225 Difference]: With dead ends: 318 [2021-11-09 08:48:03,109 INFO L226 Difference]: Without dead ends: 250 [2021-11-09 08:48:03,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:48:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-09 08:48:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-11-09 08:48:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.217573221757322) internal successors, (291), 246 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 291 transitions. [2021-11-09 08:48:03,135 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 291 transitions. Word has length 107 [2021-11-09 08:48:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:03,135 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 291 transitions. [2021-11-09 08:48:03,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 291 transitions. [2021-11-09 08:48:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 08:48:03,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:03,138 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:48:03,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:48:03,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:48:03,351 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:48:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1070488272, now seen corresponding path program 1 times [2021-11-09 08:48:03,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:03,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380120216] [2021-11-09 08:48:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:03,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:03,480 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:48:03,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816615757] [2021-11-09 08:48:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:03,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:48:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:48:03,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:48:03,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 08:48:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:06,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-09 08:48:06,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:48:06,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-09 08:48:06,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 08:48:07,622 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-09 08:48:07,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-09 08:48:07,846 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-09 08:48:07,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-09 08:48:08,220 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-09 08:48:08,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-09 08:48:09,942 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-09 08:48:09,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 111 [2021-11-09 08:48:09,989 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-09 08:48:09,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 102 [2021-11-09 08:48:10,067 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-09 08:48:10,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 85 [2021-11-09 08:48:10,112 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-09 08:48:10,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 76 [2021-11-09 08:48:10,885 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-11-09 08:48:10,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 95 [2021-11-09 08:48:10,978 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-09 08:48:10,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 65 [2021-11-09 08:48:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:48:11,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:11,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380120216] [2021-11-09 08:48:11,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:48:11,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816615757] [2021-11-09 08:48:11,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816615757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:11,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:11,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 08:48:11,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083429854] [2021-11-09 08:48:11,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:48:11,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:48:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:48:11,236 INFO L87 Difference]: Start difference. First operand 247 states and 291 transitions. Second operand has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:43,034 INFO L93 Difference]: Finished difference Result 568 states and 674 transitions. [2021-11-09 08:48:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-09 08:48:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-09 08:48:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:43,038 INFO L225 Difference]: With dead ends: 568 [2021-11-09 08:48:43,038 INFO L226 Difference]: Without dead ends: 465 [2021-11-09 08:48:43,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=536, Invalid=1816, Unknown=0, NotChecked=0, Total=2352 [2021-11-09 08:48:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-09 08:48:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 292. [2021-11-09 08:48:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 284 states have (on average 1.204225352112676) internal successors, (342), 291 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 342 transitions. [2021-11-09 08:48:43,078 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 342 transitions. Word has length 108 [2021-11-09 08:48:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:43,079 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 342 transitions. [2021-11-09 08:48:43,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:48:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 342 transitions. [2021-11-09 08:48:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-09 08:48:43,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:43,081 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:48:43,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:48:43,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:48:43,297 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-09 08:48:43,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1165641827, now seen corresponding path program 1 times [2021-11-09 08:48:43,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:43,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969082229] [2021-11-09 08:48:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:43,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:43,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:48:43,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430624415] [2021-11-09 08:48:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:43,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:48:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:48:43,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:48:43,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82090102-975f-476f-b3af-85f3f7267214/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process