./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G --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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:08:39,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:08:39,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:08:39,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:08:39,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:08:39,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:08:39,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:08:39,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:08:39,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:08:39,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:08:39,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:08:39,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:08:39,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:08:39,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:08:39,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:08:39,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:08:39,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:08:39,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:08:39,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:08:39,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:08:39,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:08:39,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:08:39,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:08:39,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:08:39,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:08:39,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:08:39,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:08:39,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:08:39,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:08:39,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:08:39,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:08:39,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:08:39,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:08:39,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:08:39,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:08:39,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:08:39,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:08:39,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:08:39,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:08:39,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:08:39,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:08:39,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:08:39,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:08:39,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:08:39,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:08:39,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:08:39,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:08:39,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:08:39,803 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:08:39,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:08:39,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:08:39,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:08:39,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:08:39,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:08:39,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:08:39,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:08:39,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:08:39,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:08:39,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:08:39,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:08:39,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:08:39,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:08:39,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:08:39,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:08:39,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:08:39,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:08:39,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:08:39,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:08:39,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:08:39,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:08:39,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:08:39,812 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_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2021-11-23 13:08:40,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:08:40,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:08:40,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:08:40,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:08:40,207 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:08:40,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-23 13:08:40,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/data/929c07e00/572995eb0c3b49848e040648ba386b28/FLAG9cf5deff7 [2021-11-23 13:08:41,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:08:41,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-23 13:08:41,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/data/929c07e00/572995eb0c3b49848e040648ba386b28/FLAG9cf5deff7 [2021-11-23 13:08:41,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/data/929c07e00/572995eb0c3b49848e040648ba386b28 [2021-11-23 13:08:41,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:08:41,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:08:41,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:08:41,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:08:41,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:08:41,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:41" (1/1) ... [2021-11-23 13:08:41,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9de86f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:41, skipping insertion in model container [2021-11-23 13:08:41,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:41" (1/1) ... [2021-11-23 13:08:41,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:08:41,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:08:42,218 WARN L230 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_12091b17-cb1f-4f62-963a-7d99d56781dd/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-23 13:08:42,225 WARN L230 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_12091b17-cb1f-4f62-963a-7d99d56781dd/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-23 13:08:43,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,596 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:43,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:44,208 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:08:44,209 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:08:44,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:08:44,212 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:08:44,214 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:08:44,215 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:08:44,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:08:44,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:08:44,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:08:44,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:08:44,482 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:08:44,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:44,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,016 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,017 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:08:45,167 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:08:45,193 WARN L230 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_12091b17-cb1f-4f62-963a-7d99d56781dd/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-23 13:08:45,201 WARN L230 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_12091b17-cb1f-4f62-963a-7d99d56781dd/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-23 13:08:45,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,286 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:08:45,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:08:45,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:08:45,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:08:45,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:08:45,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:08:45,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:08:45,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:08:45,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:08:45,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:08:45,369 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:08:45,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,547 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:08:45,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:08:46,043 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:08:46,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46 WrapperNode [2021-11-23 13:08:46,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:08:46,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:08:46,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:08:46,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:08:46,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,378 INFO L137 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 754, calls inlined = 75, statements flattened = 1682 [2021-11-23 13:08:46,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:08:46,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:08:46,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:08:46,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:08:46,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:08:46,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:08:46,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:08:46,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:08:46,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (1/1) ... [2021-11-23 13:08:46,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:08:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:46,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:08:46,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:08:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 13:08:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:08:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:08:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:08:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:08:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:08:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:08:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:08:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:08:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:08:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:08:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:08:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:08:47,050 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:08:47,052 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:08:48,707 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:08:48,717 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:08:48,717 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:08:48,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:48 BoogieIcfgContainer [2021-11-23 13:08:48,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:08:48,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:08:48,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:08:48,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:08:48,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:08:41" (1/3) ... [2021-11-23 13:08:48,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8a9079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:08:48, skipping insertion in model container [2021-11-23 13:08:48,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:46" (2/3) ... [2021-11-23 13:08:48,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8a9079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:08:48, skipping insertion in model container [2021-11-23 13:08:48,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:48" (3/3) ... [2021-11-23 13:08:48,728 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2021-11-23 13:08:48,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:08:48,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 13:08:48,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:08:48,793 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 [2021-11-23 13:08:48,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 13:08:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 197 states have (on average 1.4720812182741116) internal successors, (290), 205 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 13:08:48,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:48,823 INFO L514 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] [2021-11-23 13:08:48,824 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)] === [2021-11-23 13:08:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -11255452, now seen corresponding path program 1 times [2021-11-23 13:08:48,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:48,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576496612] [2021-11-23 13:08:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:48,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:49,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:49,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576496612] [2021-11-23 13:08:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576496612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:49,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:49,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:08:49,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264812590] [2021-11-23 13:08:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:49,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:08:49,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:08:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:08:49,453 INFO L87 Difference]: Start difference. First operand has 206 states, 197 states have (on average 1.4720812182741116) internal successors, (290), 205 states have internal predecessors, (290), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:49,493 INFO L93 Difference]: Finished difference Result 408 states and 575 transitions. [2021-11-23 13:08:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:08:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-23 13:08:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:49,507 INFO L225 Difference]: With dead ends: 408 [2021-11-23 13:08:49,507 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 13:08:49,511 INFO L932 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 [2021-11-23 13:08:49,515 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:49,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:08:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 13:08:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-23 13:08:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 192 states have (on average 1.3802083333333333) internal successors, (265), 199 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 265 transitions. [2021-11-23 13:08:49,567 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 265 transitions. Word has length 58 [2021-11-23 13:08:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:49,568 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 265 transitions. [2021-11-23 13:08:49,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 265 transitions. [2021-11-23 13:08:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 13:08:49,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:49,571 INFO L514 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] [2021-11-23 13:08:49,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:08:49,572 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)] === [2021-11-23 13:08:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 502328866, now seen corresponding path program 1 times [2021-11-23 13:08:49,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:49,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734299796] [2021-11-23 13:08:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:49,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:49,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316772002] [2021-11-23 13:08:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:49,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:49,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:08:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:08:50,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:50,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:08:50,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:50,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734299796] [2021-11-23 13:08:50,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316772002] [2021-11-23 13:08:50,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316772002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:50,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:50,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:08:50,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547343801] [2021-11-23 13:08:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:50,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:50,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:50,481 INFO L87 Difference]: Start difference. First operand 200 states and 265 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:50,689 INFO L93 Difference]: Finished difference Result 337 states and 447 transitions. [2021-11-23 13:08:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-23 13:08:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:50,695 INFO L225 Difference]: With dead ends: 337 [2021-11-23 13:08:50,695 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 13:08:50,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:08:50,703 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 618 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:50,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 334 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:08:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 13:08:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-23 13:08:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 192 states have (on average 1.3645833333333333) internal successors, (262), 199 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-11-23 13:08:50,736 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 58 [2021-11-23 13:08:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-11-23 13:08:50,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-11-23 13:08:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:08:50,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:50,746 INFO L514 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] [2021-11-23 13:08:50,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:50,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:50,959 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)] === [2021-11-23 13:08:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -509107726, now seen corresponding path program 1 times [2021-11-23 13:08:50,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:50,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812976149] [2021-11-23 13:08:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:50,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:51,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:51,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58038000] [2021-11-23 13:08:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:51,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:51,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:51,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:51,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:08:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:51,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:08:51,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:51,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:08:51,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:51,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812976149] [2021-11-23 13:08:51,646 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:51,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58038000] [2021-11-23 13:08:51,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58038000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:51,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:51,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:08:51,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100806825] [2021-11-23 13:08:51,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:51,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:51,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:51,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:51,649 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:51,742 INFO L93 Difference]: Finished difference Result 562 states and 742 transitions. [2021-11-23 13:08:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:08:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:51,745 INFO L225 Difference]: With dead ends: 562 [2021-11-23 13:08:51,745 INFO L226 Difference]: Without dead ends: 384 [2021-11-23 13:08:51,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:08:51,747 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 476 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:51,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1453 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:08:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-23 13:08:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 206. [2021-11-23 13:08:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 198 states have (on average 1.3535353535353536) internal successors, (268), 205 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-11-23 13:08:51,766 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 60 [2021-11-23 13:08:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:51,767 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-11-23 13:08:51,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-11-23 13:08:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:08:51,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:51,768 INFO L514 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] [2021-11-23 13:08:51,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:51,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:52,000 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)] === [2021-11-23 13:08:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -119228470, now seen corresponding path program 1 times [2021-11-23 13:08:52,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:52,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205235436] [2021-11-23 13:08:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:52,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:52,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205235436] [2021-11-23 13:08:52,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205235436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:52,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:52,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:08:52,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926692503] [2021-11-23 13:08:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:52,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:08:52,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:08:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:08:52,288 INFO L87 Difference]: Start difference. First operand 206 states and 268 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-11-23 13:08:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:52,826 INFO L93 Difference]: Finished difference Result 577 states and 750 transitions. [2021-11-23 13:08:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:08:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2021-11-23 13:08:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:52,831 INFO L225 Difference]: With dead ends: 577 [2021-11-23 13:08:52,831 INFO L226 Difference]: Without dead ends: 409 [2021-11-23 13:08:52,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:08:52,833 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 885 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:52,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1096 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:08:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-23 13:08:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 308. [2021-11-23 13:08:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 300 states have (on average 1.3866666666666667) internal successors, (416), 307 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 416 transitions. [2021-11-23 13:08:52,868 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 416 transitions. Word has length 64 [2021-11-23 13:08:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:52,870 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 416 transitions. [2021-11-23 13:08:52,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2021-11-23 13:08:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 416 transitions. [2021-11-23 13:08:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:08:52,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:52,875 INFO L514 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] [2021-11-23 13:08:52,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:08:52,875 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)] === [2021-11-23 13:08:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash 128918024, now seen corresponding path program 1 times [2021-11-23 13:08:52,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:52,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253407710] [2021-11-23 13:08:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:52,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:53,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:53,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253407710] [2021-11-23 13:08:53,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253407710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:53,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:08:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849511523] [2021-11-23 13:08:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:08:53,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:08:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:08:53,163 INFO L87 Difference]: Start difference. First operand 308 states and 416 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-23 13:08:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:53,269 INFO L93 Difference]: Finished difference Result 579 states and 789 transitions. [2021-11-23 13:08:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:08:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-11-23 13:08:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:53,272 INFO L225 Difference]: With dead ends: 579 [2021-11-23 13:08:53,272 INFO L226 Difference]: Without dead ends: 306 [2021-11-23 13:08:53,273 INFO L932 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 [2021-11-23 13:08:53,274 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 236 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:53,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 481 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:08:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-23 13:08:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-11-23 13:08:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3758389261744965) internal successors, (410), 305 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 410 transitions. [2021-11-23 13:08:53,298 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 410 transitions. Word has length 64 [2021-11-23 13:08:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:53,298 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 410 transitions. [2021-11-23 13:08:53,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-23 13:08:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 410 transitions. [2021-11-23 13:08:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:08:53,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:53,302 INFO L514 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] [2021-11-23 13:08:53,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:08:53,303 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)] === [2021-11-23 13:08:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1145717007, now seen corresponding path program 1 times [2021-11-23 13:08:53,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:53,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899314909] [2021-11-23 13:08:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:53,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:53,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899314909] [2021-11-23 13:08:53,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899314909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:53,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:53,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:08:53,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398152729] [2021-11-23 13:08:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:53,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:53,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:53,545 INFO L87 Difference]: Start difference. First operand 306 states and 410 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:53,935 INFO L93 Difference]: Finished difference Result 583 states and 786 transitions. [2021-11-23 13:08:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:08:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-23 13:08:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:53,938 INFO L225 Difference]: With dead ends: 583 [2021-11-23 13:08:53,938 INFO L226 Difference]: Without dead ends: 314 [2021-11-23 13:08:53,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:08:53,940 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 260 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:53,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 604 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:08:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-23 13:08:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2021-11-23 13:08:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3456375838926173) internal successors, (401), 305 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 401 transitions. [2021-11-23 13:08:53,961 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 401 transitions. Word has length 66 [2021-11-23 13:08:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:53,961 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 401 transitions. [2021-11-23 13:08:53,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 401 transitions. [2021-11-23 13:08:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 13:08:53,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:53,963 INFO L514 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] [2021-11-23 13:08:53,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:08:53,963 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)] === [2021-11-23 13:08:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1996384766, now seen corresponding path program 1 times [2021-11-23 13:08:53,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:53,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458621401] [2021-11-23 13:08:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:53,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:54,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:54,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458621401] [2021-11-23 13:08:54,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458621401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:54,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:54,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:08:54,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315232547] [2021-11-23 13:08:54,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:54,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:08:54,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:08:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:08:54,299 INFO L87 Difference]: Start difference. First operand 306 states and 401 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:54,718 INFO L93 Difference]: Finished difference Result 571 states and 739 transitions. [2021-11-23 13:08:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:08:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 13:08:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:54,721 INFO L225 Difference]: With dead ends: 571 [2021-11-23 13:08:54,721 INFO L226 Difference]: Without dead ends: 331 [2021-11-23 13:08:54,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:08:54,723 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 446 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:54,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 959 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:08:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-23 13:08:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 306. [2021-11-23 13:08:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3355704697986577) internal successors, (398), 305 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 398 transitions. [2021-11-23 13:08:54,746 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 398 transitions. Word has length 67 [2021-11-23 13:08:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:54,747 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 398 transitions. [2021-11-23 13:08:54,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 398 transitions. [2021-11-23 13:08:54,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:08:54,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:54,749 INFO L514 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] [2021-11-23 13:08:54,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:08:54,749 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)] === [2021-11-23 13:08:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1974209867, now seen corresponding path program 1 times [2021-11-23 13:08:54,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:54,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615814143] [2021-11-23 13:08:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:54,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:55,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:55,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615814143] [2021-11-23 13:08:55,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615814143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:55,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:55,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:08:55,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823783891] [2021-11-23 13:08:55,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:55,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:08:55,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:08:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:08:55,155 INFO L87 Difference]: Start difference. First operand 306 states and 398 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:56,655 INFO L93 Difference]: Finished difference Result 963 states and 1198 transitions. [2021-11-23 13:08:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 13:08:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 13:08:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:56,660 INFO L225 Difference]: With dead ends: 963 [2021-11-23 13:08:56,661 INFO L226 Difference]: Without dead ends: 847 [2021-11-23 13:08:56,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 13:08:56,663 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2449 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:56,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 1948 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:08:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-23 13:08:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 355. [2021-11-23 13:08:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 347 states have (on average 1.3285302593659942) internal successors, (461), 354 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 461 transitions. [2021-11-23 13:08:56,700 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 461 transitions. Word has length 76 [2021-11-23 13:08:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:56,701 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 461 transitions. [2021-11-23 13:08:56,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 461 transitions. [2021-11-23 13:08:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:08:56,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:56,708 INFO L514 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] [2021-11-23 13:08:56,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:08:56,709 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)] === [2021-11-23 13:08:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1317329973, now seen corresponding path program 1 times [2021-11-23 13:08:56,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292569329] [2021-11-23 13:08:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:56,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:56,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:56,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283032460] [2021-11-23 13:08:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:56,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:56,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:08:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:57,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:08:57,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:57,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:08:57,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:57,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292569329] [2021-11-23 13:08:57,494 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283032460] [2021-11-23 13:08:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283032460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:57,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:57,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:08:57,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497885936] [2021-11-23 13:08:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:57,498 INFO L87 Difference]: Start difference. First operand 355 states and 461 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:57,601 INFO L93 Difference]: Finished difference Result 996 states and 1301 transitions. [2021-11-23 13:08:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 13:08:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:57,607 INFO L225 Difference]: With dead ends: 996 [2021-11-23 13:08:57,607 INFO L226 Difference]: Without dead ends: 666 [2021-11-23 13:08:57,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:08:57,610 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 438 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:57,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1181 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:08:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-23 13:08:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 364. [2021-11-23 13:08:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 356 states have (on average 1.3202247191011236) internal successors, (470), 363 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 470 transitions. [2021-11-23 13:08:57,651 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 470 transitions. Word has length 76 [2021-11-23 13:08:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:57,653 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 470 transitions. [2021-11-23 13:08:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 470 transitions. [2021-11-23 13:08:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:08:57,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:57,654 INFO L514 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] [2021-11-23 13:08:57,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:57,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 13:08:57,870 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)] === [2021-11-23 13:08:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2134978423, now seen corresponding path program 1 times [2021-11-23 13:08:57,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385240832] [2021-11-23 13:08:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:57,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:57,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:57,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741631716] [2021-11-23 13:08:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:57,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:57,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:57,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:08:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:58,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2340 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:08:58,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:58,605 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 10 treesize of output 4 [2021-11-23 13:08:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:58,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:08:58,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385240832] [2021-11-23 13:08:58,619 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741631716] [2021-11-23 13:08:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741631716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:58,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:58,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:08:58,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531832351] [2021-11-23 13:08:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:58,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:58,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:58,621 INFO L87 Difference]: Start difference. First operand 364 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:59,047 INFO L93 Difference]: Finished difference Result 656 states and 858 transitions. [2021-11-23 13:08:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 13:08:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:59,052 INFO L225 Difference]: With dead ends: 656 [2021-11-23 13:08:59,052 INFO L226 Difference]: Without dead ends: 514 [2021-11-23 13:08:59,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:08:59,053 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 108 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:59,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 815 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:08:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-23 13:08:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 372. [2021-11-23 13:08:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 364 states have (on average 1.3131868131868132) internal successors, (478), 371 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 478 transitions. [2021-11-23 13:08:59,089 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 478 transitions. Word has length 76 [2021-11-23 13:08:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:59,090 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 478 transitions. [2021-11-23 13:08:59,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 478 transitions. [2021-11-23 13:08:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:08:59,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:59,091 INFO L514 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] [2021-11-23 13:08:59,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:59,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 13:08:59,306 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)] === [2021-11-23 13:08:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2134918841, now seen corresponding path program 1 times [2021-11-23 13:08:59,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:59,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309653653] [2021-11-23 13:08:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:59,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:59,368 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:59,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133435319] [2021-11-23 13:08:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:59,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:59,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:59,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:08:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:59,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:08:59,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:59,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:08:59,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309653653] [2021-11-23 13:08:59,995 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133435319] [2021-11-23 13:08:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133435319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:59,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:59,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:08:59,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345255246] [2021-11-23 13:08:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:59,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:08:59,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:08:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:08:59,997 INFO L87 Difference]: Start difference. First operand 372 states and 478 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:00,276 INFO L93 Difference]: Finished difference Result 767 states and 971 transitions. [2021-11-23 13:09:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:09:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 13:09:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:00,280 INFO L225 Difference]: With dead ends: 767 [2021-11-23 13:09:00,280 INFO L226 Difference]: Without dead ends: 431 [2021-11-23 13:09:00,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:09:00,282 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 83 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:00,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1401 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:09:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-23 13:09:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 329. [2021-11-23 13:09:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 321 states have (on average 1.2710280373831775) internal successors, (408), 328 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 408 transitions. [2021-11-23 13:09:00,309 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 408 transitions. Word has length 76 [2021-11-23 13:09:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 408 transitions. [2021-11-23 13:09:00,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 408 transitions. [2021-11-23 13:09:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 13:09:00,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:00,312 INFO L514 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] [2021-11-23 13:09:00,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:00,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:00,528 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)] === [2021-11-23 13:09:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1036608948, now seen corresponding path program 1 times [2021-11-23 13:09:00,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:00,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39072531] [2021-11-23 13:09:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:00,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:01,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:01,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39072531] [2021-11-23 13:09:01,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39072531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:01,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:01,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:09:01,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777786222] [2021-11-23 13:09:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:01,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:01,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:01,481 INFO L87 Difference]: Start difference. First operand 329 states and 408 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:01,573 INFO L93 Difference]: Finished difference Result 634 states and 788 transitions. [2021-11-23 13:09:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:09:01,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-23 13:09:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:01,577 INFO L225 Difference]: With dead ends: 634 [2021-11-23 13:09:01,577 INFO L226 Difference]: Without dead ends: 329 [2021-11-23 13:09:01,578 INFO L932 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 [2021-11-23 13:09:01,579 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 2 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:01,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 689 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:09:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-23 13:09:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 320. [2021-11-23 13:09:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 312 states have (on average 1.2628205128205128) internal successors, (394), 319 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 394 transitions. [2021-11-23 13:09:01,612 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 394 transitions. Word has length 89 [2021-11-23 13:09:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:01,612 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 394 transitions. [2021-11-23 13:09:01,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 394 transitions. [2021-11-23 13:09:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 13:09:01,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:01,615 INFO L514 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] [2021-11-23 13:09:01,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:09:01,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -187202729, now seen corresponding path program 1 times [2021-11-23 13:09:01,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427313287] [2021-11-23 13:09:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:01,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:01,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:01,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969550443] [2021-11-23 13:09:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:01,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:01,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:01,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:01,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:09:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:02,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:09:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:02,588 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 [2021-11-23 13:09:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:02,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:02,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427313287] [2021-11-23 13:09:02,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969550443] [2021-11-23 13:09:02,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969550443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:02,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:02,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:09:02,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967689233] [2021-11-23 13:09:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:02,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:09:02,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:09:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:09:02,616 INFO L87 Difference]: Start difference. First operand 320 states and 394 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:03,410 INFO L93 Difference]: Finished difference Result 503 states and 631 transitions. [2021-11-23 13:09:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:09:03,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-23 13:09:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:03,413 INFO L225 Difference]: With dead ends: 503 [2021-11-23 13:09:03,414 INFO L226 Difference]: Without dead ends: 501 [2021-11-23 13:09:03,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:09:03,415 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 343 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:03,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1490 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:09:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-23 13:09:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 324. [2021-11-23 13:09:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 316 states have (on average 1.259493670886076) internal successors, (398), 323 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 398 transitions. [2021-11-23 13:09:03,443 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 398 transitions. Word has length 95 [2021-11-23 13:09:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:03,443 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 398 transitions. [2021-11-23 13:09:03,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 398 transitions. [2021-11-23 13:09:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 13:09:03,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:03,445 INFO L514 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] [2021-11-23 13:09:03,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 13:09:03,660 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash 622143897, now seen corresponding path program 1 times [2021-11-23 13:09:03,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064985473] [2021-11-23 13:09:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:03,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:03,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:03,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901598106] [2021-11-23 13:09:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:03,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:03,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:09:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:09:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:04,418 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 [2021-11-23 13:09:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:04,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:04,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064985473] [2021-11-23 13:09:04,427 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:04,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901598106] [2021-11-23 13:09:04,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901598106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:04,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:09:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923880012] [2021-11-23 13:09:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:04,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:09:04,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:09:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:09:04,429 INFO L87 Difference]: Start difference. First operand 324 states and 398 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:04,863 INFO L93 Difference]: Finished difference Result 624 states and 790 transitions. [2021-11-23 13:09:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-23 13:09:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:04,866 INFO L225 Difference]: With dead ends: 624 [2021-11-23 13:09:04,866 INFO L226 Difference]: Without dead ends: 470 [2021-11-23 13:09:04,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:09:04,867 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 108 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:04,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1023 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:09:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-23 13:09:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 318. [2021-11-23 13:09:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 311 states have (on average 1.2508038585209003) internal successors, (389), 317 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 389 transitions. [2021-11-23 13:09:04,893 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 389 transitions. Word has length 95 [2021-11-23 13:09:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:04,894 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 389 transitions. [2021-11-23 13:09:04,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 389 transitions. [2021-11-23 13:09:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 13:09:04,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:04,896 INFO L514 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] [2021-11-23 13:09:04,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:05,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:05,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 486940505, now seen corresponding path program 1 times [2021-11-23 13:09:05,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248219599] [2021-11-23 13:09:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:05,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:05,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:05,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860983258] [2021-11-23 13:09:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:05,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:05,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:05,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:05,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:09:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:05,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 13:09:05,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:06,287 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 29 treesize of output 17 [2021-11-23 13:09:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:06,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:06,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248219599] [2021-11-23 13:09:06,327 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:06,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860983258] [2021-11-23 13:09:06,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860983258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:06,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:06,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:09:06,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679775365] [2021-11-23 13:09:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:06,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:09:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:09:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:09:06,330 INFO L87 Difference]: Start difference. First operand 318 states and 389 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:07,311 INFO L93 Difference]: Finished difference Result 703 states and 869 transitions. [2021-11-23 13:09:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 13:09:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-23 13:09:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:07,314 INFO L225 Difference]: With dead ends: 703 [2021-11-23 13:09:07,314 INFO L226 Difference]: Without dead ends: 543 [2021-11-23 13:09:07,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-23 13:09:07,316 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 540 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:07,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1500 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:09:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-23 13:09:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 370. [2021-11-23 13:09:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 363 states have (on average 1.2534435261707988) internal successors, (455), 369 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 455 transitions. [2021-11-23 13:09:07,351 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 455 transitions. Word has length 97 [2021-11-23 13:09:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:07,351 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 455 transitions. [2021-11-23 13:09:07,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 455 transitions. [2021-11-23 13:09:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 13:09:07,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:07,353 INFO L514 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] [2021-11-23 13:09:07,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:07,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 13:09:07,570 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)] === [2021-11-23 13:09:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 822709213, now seen corresponding path program 1 times [2021-11-23 13:09:07,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612751572] [2021-11-23 13:09:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:07,618 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:07,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750197522] [2021-11-23 13:09:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:07,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:07,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:07,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:07,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:09:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:08,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-23 13:09:08,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:08,399 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 [2021-11-23 13:09:08,962 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-23 13:09:08,963 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 [2021-11-23 13:09:09,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:09,071 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-23 13:09:09,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 43 [2021-11-23 13:09:15,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:15,634 INFO L354 Elim1Store]: treesize reduction 118, result has 18.1 percent of original size [2021-11-23 13:09:15,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 59 [2021-11-23 13:09:21,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:09:21,261 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 23 treesize of output 11 [2021-11-23 13:09:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:21,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:21,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612751572] [2021-11-23 13:09:21,311 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750197522] [2021-11-23 13:09:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750197522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:21,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:21,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-23 13:09:21,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758203382] [2021-11-23 13:09:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:21,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:09:21,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:09:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=326, Unknown=3, NotChecked=0, Total=380 [2021-11-23 13:09:21,313 INFO L87 Difference]: Start difference. First operand 370 states and 455 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:34,794 INFO L93 Difference]: Finished difference Result 636 states and 779 transitions. [2021-11-23 13:09:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 13:09:34,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-23 13:09:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:34,799 INFO L225 Difference]: With dead ends: 636 [2021-11-23 13:09:34,799 INFO L226 Difference]: Without dead ends: 634 [2021-11-23 13:09:34,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=280, Invalid=1521, Unknown=5, NotChecked=0, Total=1806 [2021-11-23 13:09:34,801 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1008 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:34,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 2398 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 983 Invalid, 0 Unknown, 294 Unchecked, 2.0s Time] [2021-11-23 13:09:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-23 13:09:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 434. [2021-11-23 13:09:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 427 states have (on average 1.2365339578454333) internal successors, (528), 433 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 528 transitions. [2021-11-23 13:09:34,850 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 528 transitions. Word has length 97 [2021-11-23 13:09:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:34,850 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 528 transitions. [2021-11-23 13:09:34,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 528 transitions. [2021-11-23 13:09:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 13:09:34,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:34,853 INFO L514 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] [2021-11-23 13:09:34,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:35,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 13:09:35,063 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 302723673, now seen corresponding path program 1 times [2021-11-23 13:09:35,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:35,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395819008] [2021-11-23 13:09:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:35,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:35,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:35,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103665926] [2021-11-23 13:09:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:35,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:35,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:35,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:35,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 13:09:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:35,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:09:35,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:35,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:35,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:35,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395819008] [2021-11-23 13:09:35,730 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:35,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103665926] [2021-11-23 13:09:35,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103665926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:35,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:35,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:09:35,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268110624] [2021-11-23 13:09:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:35,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:09:35,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:09:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:09:35,733 INFO L87 Difference]: Start difference. First operand 434 states and 528 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:35,883 INFO L93 Difference]: Finished difference Result 992 states and 1191 transitions. [2021-11-23 13:09:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:35,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-23 13:09:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:35,887 INFO L225 Difference]: With dead ends: 992 [2021-11-23 13:09:35,887 INFO L226 Difference]: Without dead ends: 563 [2021-11-23 13:09:35,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:09:35,889 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 222 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:35,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1957 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:09:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-23 13:09:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 292. [2021-11-23 13:09:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 285 states have (on average 1.2035087719298245) internal successors, (343), 291 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 343 transitions. [2021-11-23 13:09:35,918 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 343 transitions. Word has length 99 [2021-11-23 13:09:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 343 transitions. [2021-11-23 13:09:35,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 343 transitions. [2021-11-23 13:09:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 13:09:35,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:35,920 INFO L514 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] [2021-11-23 13:09:35,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:36,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 13:09:36,146 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1056570172, now seen corresponding path program 1 times [2021-11-23 13:09:36,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:36,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890419849] [2021-11-23 13:09:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:36,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:36,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739581948] [2021-11-23 13:09:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:36,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:36,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:36,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:36,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 13:09:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:36,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 13:09:36,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:36,876 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 15 treesize of output 7 [2021-11-23 13:09:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:36,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:36,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:36,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890419849] [2021-11-23 13:09:36,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:36,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739581948] [2021-11-23 13:09:36,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739581948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:36,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:36,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:09:36,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96936499] [2021-11-23 13:09:36,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:36,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:09:36,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:09:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:09:36,979 INFO L87 Difference]: Start difference. First operand 292 states and 343 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:37,509 INFO L93 Difference]: Finished difference Result 508 states and 602 transitions. [2021-11-23 13:09:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:09:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-23 13:09:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:37,512 INFO L225 Difference]: With dead ends: 508 [2021-11-23 13:09:37,512 INFO L226 Difference]: Without dead ends: 334 [2021-11-23 13:09:37,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:09:37,513 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 56 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:37,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1072 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:09:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-23 13:09:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 308. [2021-11-23 13:09:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 301 states have (on average 1.196013289036545) internal successors, (360), 307 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) [2021-11-23 13:09:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 360 transitions. [2021-11-23 13:09:37,541 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 360 transitions. Word has length 100 [2021-11-23 13:09:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:37,542 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 360 transitions. [2021-11-23 13:09:37,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 360 transitions. [2021-11-23 13:09:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 13:09:37,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:37,543 INFO L514 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] [2021-11-23 13:09:37,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:37,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 13:09:37,763 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1180284646, now seen corresponding path program 1 times [2021-11-23 13:09:37,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:37,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404837330] [2021-11-23 13:09:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:37,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:37,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480060819] [2021-11-23 13:09:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:37,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:37,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 13:09:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:38,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-23 13:09:38,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:38,498 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 [2021-11-23 13:09:38,774 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 13:09:38,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 13:09:38,840 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 13:09:38,841 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 31 treesize of output 30 [2021-11-23 13:09:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:38,992 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 13:09:39,162 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 15 treesize of output 7 [2021-11-23 13:09:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:39,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:09:39,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404837330] [2021-11-23 13:09:39,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480060819] [2021-11-23 13:09:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480060819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:39,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:39,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:09:39,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789215048] [2021-11-23 13:09:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:39,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:09:39,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:09:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:09:39,207 INFO L87 Difference]: Start difference. First operand 308 states and 360 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:40,274 INFO L93 Difference]: Finished difference Result 563 states and 656 transitions. [2021-11-23 13:09:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 13:09:40,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-23 13:09:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:40,277 INFO L225 Difference]: With dead ends: 563 [2021-11-23 13:09:40,277 INFO L226 Difference]: Without dead ends: 454 [2021-11-23 13:09:40,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:09:40,279 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 503 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:40,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1352 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:09:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-23 13:09:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 388. [2021-11-23 13:09:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 381 states have (on average 1.194225721784777) internal successors, (455), 387 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 455 transitions. [2021-11-23 13:09:40,319 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 455 transitions. Word has length 100 [2021-11-23 13:09:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:40,319 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 455 transitions. [2021-11-23 13:09:40,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 455 transitions. [2021-11-23 13:09:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 13:09:40,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:40,322 INFO L514 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] [2021-11-23 13:09:40,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:40,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:40,547 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 13:09:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1512671877, now seen corresponding path program 1 times [2021-11-23 13:09:40,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466144492] [2021-11-23 13:09:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:40,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:40,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:40,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952272120] [2021-11-23 13:09:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:40,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:40,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12091b17-cb1f-4f62-963a-7d99d56781dd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 13:09:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:41,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-23 13:09:41,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:41,556 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 [2021-11-23 13:09:42,184 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-23 13:09:42,185 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 [2021-11-23 13:09:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:42,376 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-23 13:09:42,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2021-11-23 13:09:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:48,959 INFO L354 Elim1Store]: treesize reduction 118, result has 18.1 percent of original size [2021-11-23 13:09:48,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 67 [2021-11-23 13:09:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:55,593 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-23 13:09:55,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-11-23 13:09:55,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:56,128 INFO L354 Elim1Store]: treesize reduction 504, result has 18.3 percent of original size [2021-11-23 13:09:56,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 113 treesize of output 189 [2021-11-23 13:10:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 53 [2021-11-23 13:10:02,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 54 [2021-11-23 13:10:02,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:02,841 INFO L354 Elim1Store]: treesize reduction 142, result has 0.7 percent of original size [2021-11-23 13:10:02,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 63 [2021-11-23 13:10:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:04,494 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 13:10:04,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 72 [2021-11-23 13:10:04,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:04,544 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 13:10:04,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 82 [2021-11-23 13:10:04,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:04,623 INFO L354 Elim1Store]: treesize reduction 149, result has 8.6 percent of original size [2021-11-23 13:10:04,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 144 treesize of output 106