./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa --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 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:59:36,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:59:36,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:59:36,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:59:36,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:59:36,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:59:36,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:59:36,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:59:36,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:59:36,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:59:36,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:59:36,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:59:36,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:59:36,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:59:36,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:59:36,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:59:36,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:59:36,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:59:36,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:59:36,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:59:36,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:59:36,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:59:36,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:59:36,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:59:36,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:59:36,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:59:36,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:59:36,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:59:36,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:59:36,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:59:36,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:59:36,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:59:36,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:59:36,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:59:36,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:59:36,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:59:36,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:59:36,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:59:36,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:59:36,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:59:36,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:59:36,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:59:36,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:59:36,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:59:36,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:59:36,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:59:36,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:59:36,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:59:36,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:59:36,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:59:36,849 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:59:36,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:59:36,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:59:36,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:59:36,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:59:36,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:59:36,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:59:36,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:59:36,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:59:36,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:59:36,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:59:36,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:59:36,852 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_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2021-12-06 19:59:37,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:59:37,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:59:37,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:59:37,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:59:37,053 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:59:37,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-06 19:59:37,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/data/129f99236/a9425d556d4e4afc8a8fa8bd21899507/FLAG35fa72bb7 [2021-12-06 19:59:37,651 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:59:37,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-06 19:59:37,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/data/129f99236/a9425d556d4e4afc8a8fa8bd21899507/FLAG35fa72bb7 [2021-12-06 19:59:38,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/data/129f99236/a9425d556d4e4afc8a8fa8bd21899507 [2021-12-06 19:59:38,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:59:38,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:59:38,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:59:38,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:59:38,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:59:38,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:38" (1/1) ... [2021-12-06 19:59:38,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e200d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:38, skipping insertion in model container [2021-12-06 19:59:38,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:38" (1/1) ... [2021-12-06 19:59:38,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:59:38,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:59:38,382 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_5f2bc927-4741-426f-a6bc-11818d0e87da/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-12-06 19:59:38,387 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_5f2bc927-4741-426f-a6bc-11818d0e87da/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-12-06 19:59:38,928 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 19:59:38,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:38,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 19:59:39,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 19:59:39,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 19:59:39,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 19:59:39,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 19:59:39,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 19:59:39,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 19:59:39,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 19:59:39,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 19:59:39,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 19:59:39,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,363 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:59:39,432 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:59:39,442 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_5f2bc927-4741-426f-a6bc-11818d0e87da/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-12-06 19:59:39,443 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_5f2bc927-4741-426f-a6bc-11818d0e87da/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-12-06 19:59:39,469 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 19:59:39,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 19:59:39,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 19:59:39,517 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 19:59:39,517 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 19:59:39,518 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 19:59:39,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 19:59:39,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 19:59:39,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 19:59:39,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 19:59:39,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 19:59:39,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:59:39,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:59:39,717 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:59:39,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39 WrapperNode [2021-12-06 19:59:39,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:59:39,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:59:39,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:59:39,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:59:39,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,816 INFO L137 Inliner]: procedures = 689, calls = 1531, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 667 [2021-12-06 19:59:39,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:59:39,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:59:39,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:59:39,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:59:39,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:59:39,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:59:39,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:59:39,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:59:39,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (1/1) ... [2021-12-06 19:59:39,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:59:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:39,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:39,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:59:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 19:59:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 19:59:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:59:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 19:59:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 19:59:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 19:59:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 19:59:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 19:59:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 19:59:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:59:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 19:59:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 19:59:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 19:59:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 19:59:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:59:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:59:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-06 19:59:39,934 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-06 19:59:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:59:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:59:39,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:59:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 19:59:39,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 19:59:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-06 19:59:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-06 19:59:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 19:59:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 19:59:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-06 19:59:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-06 19:59:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-06 19:59:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-06 19:59:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:59:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 19:59:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 19:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 19:59:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 19:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-06 19:59:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-06 19:59:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 19:59:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 19:59:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:59:40,148 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:59:40,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:59:40,854 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:59:40,864 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:59:40,864 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:59:40,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:40 BoogieIcfgContainer [2021-12-06 19:59:40,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:59:40,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:59:40,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:59:40,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:59:40,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:59:38" (1/3) ... [2021-12-06 19:59:40,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc86fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:59:40, skipping insertion in model container [2021-12-06 19:59:40,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:39" (2/3) ... [2021-12-06 19:59:40,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc86fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:59:40, skipping insertion in model container [2021-12-06 19:59:40,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:40" (3/3) ... [2021-12-06 19:59:40,874 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2021-12-06 19:59:40,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:59:40,879 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:59:40,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:59:40,928 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 [2021-12-06 19:59:40,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:59:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-06 19:59:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 19:59:40,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:40,955 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:40,955 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1923135121, now seen corresponding path program 1 times [2021-12-06 19:59:40,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:40,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871125471] [2021-12-06 19:59:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:40,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:59:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:59:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:59:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:59:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:59:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 19:59:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 19:59:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:59:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:59:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 19:59:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:59:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:59:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:59:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-06 19:59:41,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871125471] [2021-12-06 19:59:41,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871125471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:41,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:41,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:59:41,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055576604] [2021-12-06 19:59:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:41,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:59:41,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:59:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:41,587 INFO L87 Difference]: Start difference. First operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 19:59:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:42,045 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2021-12-06 19:59:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:59:42,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2021-12-06 19:59:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:42,060 INFO L225 Difference]: With dead ends: 399 [2021-12-06 19:59:42,061 INFO L226 Difference]: Without dead ends: 234 [2021-12-06 19:59:42,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:42,070 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 131 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:42,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 356 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:59:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-06 19:59:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-06 19:59:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 19:59:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-12-06 19:59:42,129 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 107 [2021-12-06 19:59:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:42,129 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-12-06 19:59:42,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 19:59:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-12-06 19:59:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 19:59:42,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:42,135 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:42,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:59:42,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1898390481, now seen corresponding path program 1 times [2021-12-06 19:59:42,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559662260] [2021-12-06 19:59:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:42,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:59:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:59:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:59:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:59:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:59:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 19:59:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 19:59:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:59:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:59:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 19:59:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:59:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:59:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:59:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-06 19:59:42,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:42,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559662260] [2021-12-06 19:59:42,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559662260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:42,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:42,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:59:42,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123100304] [2021-12-06 19:59:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:42,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:59:42,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:42,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:59:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:59:42,558 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 19:59:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:43,086 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2021-12-06 19:59:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:59:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2021-12-06 19:59:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:43,091 INFO L225 Difference]: With dead ends: 358 [2021-12-06 19:59:43,091 INFO L226 Difference]: Without dead ends: 234 [2021-12-06 19:59:43,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:59:43,093 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 288 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:43,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 580 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:59:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-06 19:59:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-06 19:59:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 19:59:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-12-06 19:59:43,114 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 107 [2021-12-06 19:59:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:43,114 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-12-06 19:59:43,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 19:59:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2021-12-06 19:59:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 19:59:43,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:43,118 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:43,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:59:43,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash 413511437, now seen corresponding path program 1 times [2021-12-06 19:59:43,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:43,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821977150] [2021-12-06 19:59:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:43,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:59:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:59:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:59:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:59:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:59:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:59:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:59:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 19:59:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:59:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:59:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:59:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 19:59:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 19:59:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:59:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:59:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:59:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-06 19:59:43,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:43,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821977150] [2021-12-06 19:59:43,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821977150] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:59:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047017999] [2021-12-06 19:59:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:43,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:43,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:43,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:43,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:59:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:43,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:59:43,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 19:59:43,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:43,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047017999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:43,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:59:43,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-06 19:59:43,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102732424] [2021-12-06 19:59:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:43,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:59:43,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:59:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:59:43,999 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 19:59:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:44,110 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2021-12-06 19:59:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:59:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 115 [2021-12-06 19:59:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:44,112 INFO L225 Difference]: With dead ends: 309 [2021-12-06 19:59:44,112 INFO L226 Difference]: Without dead ends: 168 [2021-12-06 19:59:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:59:44,114 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:44,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1075 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-06 19:59:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-06 19:59:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-06 19:59:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2021-12-06 19:59:44,128 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 115 [2021-12-06 19:59:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:44,128 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2021-12-06 19:59:44,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 19:59:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2021-12-06 19:59:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 19:59:44,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:44,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:44,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:44,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:44,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash -445935835, now seen corresponding path program 1 times [2021-12-06 19:59:44,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:44,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851334107] [2021-12-06 19:59:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:44,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:44,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:44,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033535093] [2021-12-06 19:59:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:44,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:44,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:44,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:44,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:59:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:44,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:59:44,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 19:59:44,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:44,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851334107] [2021-12-06 19:59:44,802 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033535093] [2021-12-06 19:59:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033535093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:44,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:44,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:59:44,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514689086] [2021-12-06 19:59:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:44,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:59:44,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:59:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:59:44,803 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:59:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:44,828 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2021-12-06 19:59:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:59:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-12-06 19:59:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:44,831 INFO L225 Difference]: With dead ends: 297 [2021-12-06 19:59:44,831 INFO L226 Difference]: Without dead ends: 173 [2021-12-06 19:59:44,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:44,832 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:44,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:59:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-06 19:59:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-12-06 19:59:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 114 states have internal predecessors, (134), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-06 19:59:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-12-06 19:59:44,845 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 130 [2021-12-06 19:59:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:44,845 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-12-06 19:59:44,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:59:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-12-06 19:59:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 19:59:44,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:44,847 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:44,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:59:45,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-06 19:59:45,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:45,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:45,051 INFO L85 PathProgramCache]: Analyzing trace with hash -879664921, now seen corresponding path program 1 times [2021-12-06 19:59:45,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:45,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67675167] [2021-12-06 19:59:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:45,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:45,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:45,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362497080] [2021-12-06 19:59:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:45,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:45,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:45,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:45,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:59:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:45,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:59:45,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 19:59:45,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:45,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:45,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67675167] [2021-12-06 19:59:45,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:45,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362497080] [2021-12-06 19:59:45,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362497080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:45,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:45,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:59:45,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727771618] [2021-12-06 19:59:45,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:45,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:59:45,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:59:45,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:59:45,675 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 19:59:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:45,788 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2021-12-06 19:59:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:59:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2021-12-06 19:59:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:45,791 INFO L225 Difference]: With dead ends: 299 [2021-12-06 19:59:45,791 INFO L226 Difference]: Without dead ends: 170 [2021-12-06 19:59:45,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:59:45,793 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 243 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:45,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 830 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:45,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-06 19:59:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-06 19:59:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-06 19:59:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2021-12-06 19:59:45,809 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 130 [2021-12-06 19:59:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:45,810 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2021-12-06 19:59:45,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 19:59:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2021-12-06 19:59:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 19:59:45,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:45,812 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:45,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:59:46,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:46,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash 391202648, now seen corresponding path program 1 times [2021-12-06 19:59:46,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:46,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904030110] [2021-12-06 19:59:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:46,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:46,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:46,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767101] [2021-12-06 19:59:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:46,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:46,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:46,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:59:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:46,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:59:46,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 19:59:46,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:46,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904030110] [2021-12-06 19:59:46,581 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767101] [2021-12-06 19:59:46,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:46,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:46,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:59:46,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352232365] [2021-12-06 19:59:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:46,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:59:46,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:59:46,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:59:46,583 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 19:59:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:46,699 INFO L93 Difference]: Finished difference Result 312 states and 395 transitions. [2021-12-06 19:59:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:59:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 146 [2021-12-06 19:59:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:46,701 INFO L225 Difference]: With dead ends: 312 [2021-12-06 19:59:46,701 INFO L226 Difference]: Without dead ends: 170 [2021-12-06 19:59:46,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:59:46,703 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 104 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:46,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1200 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-06 19:59:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-06 19:59:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-06 19:59:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2021-12-06 19:59:46,713 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 146 [2021-12-06 19:59:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:46,713 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2021-12-06 19:59:46,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 19:59:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2021-12-06 19:59:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-06 19:59:46,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:46,715 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:46,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:59:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:46,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1071073244, now seen corresponding path program 2 times [2021-12-06 19:59:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473682495] [2021-12-06 19:59:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:46,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:46,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:46,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902722140] [2021-12-06 19:59:46,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:59:46,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:46,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:46,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:59:47,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:59:47,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:59:47,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:59:47,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-06 19:59:47,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:47,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473682495] [2021-12-06 19:59:47,443 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902722140] [2021-12-06 19:59:47,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902722140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:47,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:47,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:59:47,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137730559] [2021-12-06 19:59:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:47,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:59:47,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:59:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:59:47,445 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 19:59:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:47,614 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2021-12-06 19:59:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:59:47,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2021-12-06 19:59:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:47,616 INFO L225 Difference]: With dead ends: 277 [2021-12-06 19:59:47,616 INFO L226 Difference]: Without dead ends: 168 [2021-12-06 19:59:47,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:59:47,617 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 213 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:47,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1147 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-06 19:59:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-06 19:59:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 112 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 19:59:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2021-12-06 19:59:47,629 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 161 [2021-12-06 19:59:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:47,630 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2021-12-06 19:59:47,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 19:59:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2021-12-06 19:59:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:59:47,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:47,633 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:47,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:59:47,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:47,835 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 153523288, now seen corresponding path program 1 times [2021-12-06 19:59:47,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:47,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239015024] [2021-12-06 19:59:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:47,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:47,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:47,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372022157] [2021-12-06 19:59:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:47,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:47,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:47,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:47,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:59:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:48,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:59:48,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:59:48,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:48,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:48,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239015024] [2021-12-06 19:59:48,557 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372022157] [2021-12-06 19:59:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372022157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:48,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:48,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:59:48,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254538790] [2021-12-06 19:59:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:48,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:59:48,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:59:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:59:48,559 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:48,745 INFO L93 Difference]: Finished difference Result 310 states and 389 transitions. [2021-12-06 19:59:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:59:48,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-06 19:59:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:48,747 INFO L225 Difference]: With dead ends: 310 [2021-12-06 19:59:48,747 INFO L226 Difference]: Without dead ends: 186 [2021-12-06 19:59:48,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:59:48,748 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 21 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:48,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 903 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-06 19:59:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-12-06 19:59:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 115 states have (on average 1.182608695652174) internal successors, (136), 116 states have internal predecessors, (136), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 19:59:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2021-12-06 19:59:48,757 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 191 [2021-12-06 19:59:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:48,758 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2021-12-06 19:59:48,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2021-12-06 19:59:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:59:48,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:48,760 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:48,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:59:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:48,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1805051498, now seen corresponding path program 1 times [2021-12-06 19:59:48,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098881981] [2021-12-06 19:59:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:48,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:49,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616016078] [2021-12-06 19:59:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:49,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:59:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:49,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:59:49,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:59:49,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:49,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098881981] [2021-12-06 19:59:49,461 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616016078] [2021-12-06 19:59:49,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616016078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:49,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:49,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:59:49,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215019538] [2021-12-06 19:59:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:49,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:59:49,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:59:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:59:49,463 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:49,484 INFO L93 Difference]: Finished difference Result 304 states and 379 transitions. [2021-12-06 19:59:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:59:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-06 19:59:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:49,486 INFO L225 Difference]: With dead ends: 304 [2021-12-06 19:59:49,486 INFO L226 Difference]: Without dead ends: 176 [2021-12-06 19:59:49,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:49,488 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:49,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:59:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-06 19:59:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2021-12-06 19:59:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 19:59:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2021-12-06 19:59:49,500 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 191 [2021-12-06 19:59:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:49,501 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2021-12-06 19:59:49,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2021-12-06 19:59:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:59:49,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:49,503 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:49,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:59:49,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:49,705 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 610784852, now seen corresponding path program 1 times [2021-12-06 19:59:49,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:49,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585425669] [2021-12-06 19:59:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:49,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397160569] [2021-12-06 19:59:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:49,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:59:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 19:59:50,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:50,365 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 11 treesize of output 5 [2021-12-06 19:59:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 19:59:50,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:50,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585425669] [2021-12-06 19:59:50,440 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397160569] [2021-12-06 19:59:50,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397160569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:50,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:50,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:59:50,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929600304] [2021-12-06 19:59:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:50,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:59:50,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:59:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:59:50,442 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-06 19:59:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:50,694 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2021-12-06 19:59:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:59:50,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 191 [2021-12-06 19:59:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:50,696 INFO L225 Difference]: With dead ends: 329 [2021-12-06 19:59:50,696 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 19:59:50,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:59:50,697 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 119 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:50,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1349 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:59:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 19:59:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2021-12-06 19:59:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.186046511627907) internal successors, (153), 130 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-06 19:59:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2021-12-06 19:59:50,706 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 191 [2021-12-06 19:59:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:50,706 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2021-12-06 19:59:50,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-06 19:59:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2021-12-06 19:59:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:59:50,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:50,708 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:50,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:50,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:59:50,910 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -841170410, now seen corresponding path program 1 times [2021-12-06 19:59:50,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160786000] [2021-12-06 19:59:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,000 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575194642] [2021-12-06 19:59:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:59:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:59:51,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:51,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:51,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160786000] [2021-12-06 19:59:51,486 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575194642] [2021-12-06 19:59:51,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575194642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:51,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:51,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:59:51,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021631772] [2021-12-06 19:59:51,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:51,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:59:51,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:59:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:51,487 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:51,517 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2021-12-06 19:59:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:59:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-06 19:59:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:51,518 INFO L225 Difference]: With dead ends: 346 [2021-12-06 19:59:51,518 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 19:59:51,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:59:51,520 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 9 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:51,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 826 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:59:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 19:59:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2021-12-06 19:59:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1870503597122302) internal successors, (165), 140 states have internal predecessors, (165), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-06 19:59:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2021-12-06 19:59:51,529 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 191 [2021-12-06 19:59:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:51,529 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2021-12-06 19:59:51,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2021-12-06 19:59:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 19:59:51,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:51,530 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:51,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:51,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:51,731 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2030586518, now seen corresponding path program 1 times [2021-12-06 19:59:51,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:51,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114498867] [2021-12-06 19:59:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344202901] [2021-12-06 19:59:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:51,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:59:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:59:52,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:52,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:52,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114498867] [2021-12-06 19:59:52,231 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:52,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344202901] [2021-12-06 19:59:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344202901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:52,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:59:52,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718550147] [2021-12-06 19:59:52,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:52,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:59:52,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:59:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:59:52,233 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:52,253 INFO L93 Difference]: Finished difference Result 346 states and 434 transitions. [2021-12-06 19:59:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:59:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-06 19:59:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:52,255 INFO L225 Difference]: With dead ends: 346 [2021-12-06 19:59:52,255 INFO L226 Difference]: Without dead ends: 193 [2021-12-06 19:59:52,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:52,256 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:52,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:59:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-06 19:59:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2021-12-06 19:59:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.16793893129771) internal successors, (153), 132 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-06 19:59:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2021-12-06 19:59:52,264 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 191 [2021-12-06 19:59:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:52,264 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2021-12-06 19:59:52,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2021-12-06 19:59:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-06 19:59:52,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:52,265 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:52,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:59:52,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:59:52,467 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash 955866556, now seen corresponding path program 1 times [2021-12-06 19:59:52,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:52,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275590603] [2021-12-06 19:59:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:52,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:52,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472523214] [2021-12-06 19:59:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,544 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:59:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:59:53,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:59:53,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275590603] [2021-12-06 19:59:53,029 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:59:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472523214] [2021-12-06 19:59:53,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472523214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:53,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:53,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:59:53,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352139867] [2021-12-06 19:59:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:53,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:59:53,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:59:53,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:59:53,030 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:53,176 INFO L93 Difference]: Finished difference Result 334 states and 421 transitions. [2021-12-06 19:59:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:59:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2021-12-06 19:59:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:53,178 INFO L225 Difference]: With dead ends: 334 [2021-12-06 19:59:53,178 INFO L226 Difference]: Without dead ends: 189 [2021-12-06 19:59:53,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:59:53,179 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:53,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 755 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:59:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-06 19:59:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-06 19:59:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 132 states have internal predecessors, (152), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-06 19:59:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2021-12-06 19:59:53,187 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 193 [2021-12-06 19:59:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:53,187 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2021-12-06 19:59:53,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:59:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2021-12-06 19:59:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-06 19:59:53,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:53,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:53,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:53,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:59:53,389 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -100864646, now seen corresponding path program 1 times [2021-12-06 19:59:53,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161675410] [2021-12-06 19:59:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:59:53,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950545102] [2021-12-06 19:59:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,431 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:59:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:00:03,102 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-06 20:00:03,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-12-06 20:00:03,108 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-06 20:00:03,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2021-12-06 20:00:03,113 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-06 20:00:03,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-06 20:00:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 20:00:03,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:00:03,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:00:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161675410] [2021-12-06 20:00:03,874 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:00:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950545102] [2021-12-06 20:00:03,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950545102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:00:03,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:00:03,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-12-06 20:00:03,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618150513] [2021-12-06 20:00:03,874 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:00:03,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 20:00:03,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:00:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 20:00:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=841, Unknown=2, NotChecked=0, Total=930 [2021-12-06 20:00:03,876 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 20:00:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:00:13,516 INFO L93 Difference]: Finished difference Result 427 states and 543 transitions. [2021-12-06 20:00:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 20:00:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 193 [2021-12-06 20:00:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:00:13,518 INFO L225 Difference]: With dead ends: 427 [2021-12-06 20:00:13,519 INFO L226 Difference]: Without dead ends: 294 [2021-12-06 20:00:13,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=354, Invalid=3181, Unknown=5, NotChecked=0, Total=3540 [2021-12-06 20:00:13,520 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 340 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:00:13,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1531 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3408 Invalid, 0 Unknown, 249 Unchecked, 2.1s Time] [2021-12-06 20:00:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-06 20:00:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 214. [2021-12-06 20:00:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 152 states have internal predecessors, (172), 43 states have call successors, (43), 18 states have call predecessors, (43), 21 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2021-12-06 20:00:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2021-12-06 20:00:13,533 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 193 [2021-12-06 20:00:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:00:13,533 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2021-12-06 20:00:13,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 20:00:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2021-12-06 20:00:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 20:00:13,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:00:13,534 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:00:13,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 20:00:13,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:00:13,736 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:00:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:00:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -348469826, now seen corresponding path program 1 times [2021-12-06 20:00:13,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:00:13,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182529361] [2021-12-06 20:00:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:00:13,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:00:13,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:00:13,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609486794] [2021-12-06 20:00:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:00:13,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:00:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:00:13,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:00:13,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 20:00:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:00:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-06 20:00:14,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:00:14,228 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 [2021-12-06 20:00:14,526 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:00:14,526 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 23 treesize of output 22 [2021-12-06 20:00:16,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:00:16,577 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 [2021-12-06 20:00:18,687 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2056 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2056))) is different from true [2021-12-06 20:00:20,886 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (exists ((v_ArrVal_2058 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_2058)))) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|))) is different from true [2021-12-06 20:00:29,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:00:29,936 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-12-06 20:00:29,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2021-12-06 20:00:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 139 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 3 not checked. [2021-12-06 20:00:29,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:00:31,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8| Int) (|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_8| Int)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8|) (+ |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_8| 8))))) is different from false [2021-12-06 20:00:31,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:00:31,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182529361] [2021-12-06 20:00:31,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:00:31,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609486794] [2021-12-06 20:00:31,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609486794] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:00:31,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:00:31,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 20:00:31,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844780196] [2021-12-06 20:00:31,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:00:31,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 20:00:31,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:00:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 20:00:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=620, Unknown=9, NotChecked=156, Total=870 [2021-12-06 20:00:31,669 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 29 states, 26 states have (on average 4.346153846153846) internal successors, (113), 25 states have internal predecessors, (113), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-06 20:00:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:00:39,548 INFO L93 Difference]: Finished difference Result 472 states and 593 transitions. [2021-12-06 20:00:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 20:00:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.346153846153846) internal successors, (113), 25 states have internal predecessors, (113), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 200 [2021-12-06 20:00:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:00:39,550 INFO L225 Difference]: With dead ends: 472 [2021-12-06 20:00:39,550 INFO L226 Difference]: Without dead ends: 305 [2021-12-06 20:00:39,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 239 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=142, Invalid=1177, Unknown=25, NotChecked=216, Total=1560 [2021-12-06 20:00:39,552 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 284 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1901 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:00:39,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1267 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1131 Invalid, 0 Unknown, 1901 Unchecked, 0.7s Time] [2021-12-06 20:00:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-06 20:00:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 270. [2021-12-06 20:00:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 193 states have (on average 1.150259067357513) internal successors, (222), 198 states have internal predecessors, (222), 47 states have call successors, (47), 22 states have call predecessors, (47), 29 states have return successors, (72), 49 states have call predecessors, (72), 46 states have call successors, (72) [2021-12-06 20:00:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 341 transitions. [2021-12-06 20:00:39,565 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 341 transitions. Word has length 200 [2021-12-06 20:00:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:00:39,566 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 341 transitions. [2021-12-06 20:00:39,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.346153846153846) internal successors, (113), 25 states have internal predecessors, (113), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-06 20:00:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 341 transitions. [2021-12-06 20:00:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 20:00:39,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:00:39,568 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:00:39,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 20:00:39,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:00:39,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:00:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:00:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2062409755, now seen corresponding path program 1 times [2021-12-06 20:00:39,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:00:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630521936] [2021-12-06 20:00:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:00:39,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:00:39,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:00:39,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778351628] [2021-12-06 20:00:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:00:39,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:00:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:00:39,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:00:39,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 20:00:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:00:40,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 183 conjunts are in the unsatisfiable core [2021-12-06 20:00:40,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:00:40,275 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 [2021-12-06 20:00:40,555 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:00:40,556 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 23 treesize of output 22 [2021-12-06 20:00:56,255 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-06 20:00:56,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-12-06 20:00:56,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-06 20:01:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:07,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2021-12-06 20:01:07,861 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 20:01:07,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 20:01:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:08,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2021-12-06 20:01:08,358 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2297 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2297))) is different from true [2021-12-06 20:01:10,700 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2298 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2298)))) is different from true [2021-12-06 20:01:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:24,771 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-12-06 20:01:24,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 1 [2021-12-06 20:01:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 22 refuted. 4 times theorem prover too weak. 54 trivial. 3 not checked. [2021-12-06 20:01:24,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:01:26,930 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_9| Int) (|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_9| Int)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_9|) (+ |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_9| 8))))) is different from false [2021-12-06 20:01:26,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:01:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630521936] [2021-12-06 20:01:26,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:01:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778351628] [2021-12-06 20:01:26,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778351628] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:01:26,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:01:26,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-12-06 20:01:26,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559117618] [2021-12-06 20:01:26,940 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:01:26,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 20:01:26,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:01:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 20:01:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2073, Unknown=27, NotChecked=282, Total=2550 [2021-12-06 20:01:26,942 INFO L87 Difference]: Start difference. First operand 270 states and 341 transitions. Second operand has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:01:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:01:47,467 INFO L93 Difference]: Finished difference Result 547 states and 693 transitions. [2021-12-06 20:01:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 20:01:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) Word has length 206 [2021-12-06 20:01:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:01:47,470 INFO L225 Difference]: With dead ends: 547 [2021-12-06 20:01:47,470 INFO L226 Difference]: Without dead ends: 341 [2021-12-06 20:01:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 220 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=239, Invalid=3256, Unknown=57, NotChecked=354, Total=3906 [2021-12-06 20:01:47,472 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 283 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 4836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2840 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:01:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1991 Invalid, 4836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1788 Invalid, 0 Unknown, 2840 Unchecked, 1.2s Time] [2021-12-06 20:01:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-06 20:01:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 304. [2021-12-06 20:01:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 214 states have (on average 1.144859813084112) internal successors, (245), 221 states have internal predecessors, (245), 53 states have call successors, (53), 27 states have call predecessors, (53), 36 states have return successors, (87), 55 states have call predecessors, (87), 52 states have call successors, (87) [2021-12-06 20:01:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 385 transitions. [2021-12-06 20:01:47,497 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 385 transitions. Word has length 206 [2021-12-06 20:01:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:01:47,497 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 385 transitions. [2021-12-06 20:01:47,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:01:47,497 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 385 transitions. [2021-12-06 20:01:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 20:01:47,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:01:47,500 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:01:47,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 20:01:47,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 20:01:47,701 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:01:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:01:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash -128233804, now seen corresponding path program 1 times [2021-12-06 20:01:47,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:01:47,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747130230] [2021-12-06 20:01:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:01:47,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:01:47,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:01:47,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411571783] [2021-12-06 20:01:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:01:47,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:01:47,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:01:47,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:01:47,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 20:01:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:01:48,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 20:01:48,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:01:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 20:01:48,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:01:48,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:01:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747130230] [2021-12-06 20:01:48,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:01:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411571783] [2021-12-06 20:01:48,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411571783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:01:48,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:01:48,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 20:01:48,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903178878] [2021-12-06 20:01:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:01:48,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:01:48,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:01:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:01:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:01:48,290 INFO L87 Difference]: Start difference. First operand 304 states and 385 transitions. Second operand has 14 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 20:01:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:01:48,456 INFO L93 Difference]: Finished difference Result 491 states and 623 transitions. [2021-12-06 20:01:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:01:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 214 [2021-12-06 20:01:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:01:48,458 INFO L225 Difference]: With dead ends: 491 [2021-12-06 20:01:48,458 INFO L226 Difference]: Without dead ends: 316 [2021-12-06 20:01:48,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:01:48,460 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:01:48,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2700 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:01:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-06 20:01:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2021-12-06 20:01:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 220 states have (on average 1.15) internal successors, (253), 228 states have internal predecessors, (253), 53 states have call successors, (53), 27 states have call predecessors, (53), 37 states have return successors, (90), 55 states have call predecessors, (90), 52 states have call successors, (90) [2021-12-06 20:01:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 396 transitions. [2021-12-06 20:01:48,475 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 396 transitions. Word has length 214 [2021-12-06 20:01:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:01:48,475 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 396 transitions. [2021-12-06 20:01:48,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 20:01:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 396 transitions. [2021-12-06 20:01:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:01:48,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:01:48,477 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:01:48,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-06 20:01:48,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 20:01:48,679 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:01:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:01:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1517751107, now seen corresponding path program 1 times [2021-12-06 20:01:48,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:01:48,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143231713] [2021-12-06 20:01:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:01:48,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:01:48,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:01:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222502517] [2021-12-06 20:01:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:01:48,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:01:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:01:48,757 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:01:48,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 20:01:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:01:49,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-06 20:01:49,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:01:49,165 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 [2021-12-06 20:01:49,493 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:01:49,493 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 23 treesize of output 22 [2021-12-06 20:01:52,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:01:52,030 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 [2021-12-06 20:01:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:58,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-06 20:01:58,451 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:01:58,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-06 20:01:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:01:58,487 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 [2021-12-06 20:01:58,640 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2714 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2714))) is different from true [2021-12-06 20:01:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 125 proven. 31 refuted. 3 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 20:01:59,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:01:59,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:01:59,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143231713] [2021-12-06 20:01:59,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:01:59,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222502517] [2021-12-06 20:01:59,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222502517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:01:59,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:01:59,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-12-06 20:01:59,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033473905] [2021-12-06 20:01:59,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:01:59,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 20:01:59,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:01:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 20:01:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=652, Unknown=13, NotChecked=52, Total=812 [2021-12-06 20:01:59,753 INFO L87 Difference]: Start difference. First operand 311 states and 396 transitions. Second operand has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 23 states have internal predecessors, (119), 14 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 11 states have call predecessors, (27), 14 states have call successors, (27) [2021-12-06 20:02:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:02:04,672 INFO L93 Difference]: Finished difference Result 598 states and 783 transitions. [2021-12-06 20:02:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 20:02:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 23 states have internal predecessors, (119), 14 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 11 states have call predecessors, (27), 14 states have call successors, (27) Word has length 208 [2021-12-06 20:02:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:02:04,674 INFO L225 Difference]: With dead ends: 598 [2021-12-06 20:02:04,674 INFO L226 Difference]: Without dead ends: 385 [2021-12-06 20:02:04,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 257 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=155, Invalid=1150, Unknown=31, NotChecked=70, Total=1406 [2021-12-06 20:02:04,676 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 249 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1666 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:02:04,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 1624 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1135 Invalid, 0 Unknown, 1666 Unchecked, 0.7s Time] [2021-12-06 20:02:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-06 20:02:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 337. [2021-12-06 20:02:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 241 states have (on average 1.1493775933609958) internal successors, (277), 250 states have internal predecessors, (277), 56 states have call successors, (56), 27 states have call predecessors, (56), 39 states have return successors, (106), 59 states have call predecessors, (106), 55 states have call successors, (106) [2021-12-06 20:02:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 439 transitions. [2021-12-06 20:02:04,693 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 439 transitions. Word has length 208 [2021-12-06 20:02:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:02:04,693 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 439 transitions. [2021-12-06 20:02:04,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 23 states have internal predecessors, (119), 14 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 11 states have call predecessors, (27), 14 states have call successors, (27) [2021-12-06 20:02:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 439 transitions. [2021-12-06 20:02:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 20:02:04,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:02:04,695 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:02:04,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 20:02:04,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 20:02:04,897 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:02:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:02:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1542726051, now seen corresponding path program 2 times [2021-12-06 20:02:04,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:02:04,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679586895] [2021-12-06 20:02:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:02:04,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:02:04,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:02:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157404604] [2021-12-06 20:02:04,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:02:04,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:02:04,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:02:04,981 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:02:04,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 20:02:09,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:02:09,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:02:09,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 374 conjunts are in the unsatisfiable core [2021-12-06 20:02:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:02:09,113 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 [2021-12-06 20:02:09,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 20:02:09,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 20:02:09,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:02:09,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2021-12-06 20:02:09,451 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:02:09,451 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 44 treesize of output 31 [2021-12-06 20:02:09,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:09,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-12-06 20:02:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:10,557 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 34 treesize of output 27 [2021-12-06 20:02:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:15,822 INFO L354 Elim1Store]: treesize reduction 397, result has 22.3 percent of original size [2021-12-06 20:02:15,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 529 treesize of output 604 [2021-12-06 20:02:15,854 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:02:15,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 70 [2021-12-06 20:02:15,878 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:02:15,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 20:02:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:19,665 INFO L354 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2021-12-06 20:02:19,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 40 treesize of output 71 [2021-12-06 20:02:21,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-06 20:02:24,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:24,115 INFO L354 Elim1Store]: treesize reduction 178, result has 26.1 percent of original size [2021-12-06 20:02:24,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 45 treesize of output 87 [2021-12-06 20:02:24,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 25 [2021-12-06 20:02:26,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:02:39,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-12-06 20:02:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:59,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-12-06 20:02:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:02:59,771 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-12-06 20:02:59,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2021-12-06 20:03:44,132 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:03:44,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 79 [2021-12-06 20:03:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 48 proven. 130 refuted. 7 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 20:03:44,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:03:52,450 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-06 20:04:05,644 WARN L227 SmtUtils]: Spent 13.10s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-06 20:04:19,566 WARN L227 SmtUtils]: Spent 13.92s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 271] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-06 20:04:30,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:04:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679586895] [2021-12-06 20:04:30,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:04:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157404604] [2021-12-06 20:04:30,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157404604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:04:30,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:04:30,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2021-12-06 20:04:30,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050183580] [2021-12-06 20:04:30,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:04:30,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 20:04:30,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:04:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 20:04:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=5508, Unknown=103, NotChecked=0, Total=5852 [2021-12-06 20:04:30,786 INFO L87 Difference]: Start difference. First operand 337 states and 439 transitions. Second operand has 73 states, 62 states have (on average 2.129032258064516) internal successors, (132), 58 states have internal predecessors, (132), 23 states have call successors, (29), 14 states have call predecessors, (29), 21 states have return successors, (27), 22 states have call predecessors, (27), 21 states have call successors, (27) [2021-12-06 20:06:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:30,490 INFO L93 Difference]: Finished difference Result 460 states and 603 transitions. [2021-12-06 20:06:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-06 20:06:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 62 states have (on average 2.129032258064516) internal successors, (132), 58 states have internal predecessors, (132), 23 states have call successors, (29), 14 states have call predecessors, (29), 21 states have return successors, (27), 22 states have call predecessors, (27), 21 states have call successors, (27) Word has length 206 [2021-12-06 20:06:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:30,493 INFO L225 Difference]: With dead ends: 460 [2021-12-06 20:06:30,494 INFO L226 Difference]: Without dead ends: 456 [2021-12-06 20:06:30,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 129 SyntacticMatches, 12 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 203.2s TimeCoverageRelationStatistics Valid=503, Invalid=11309, Unknown=178, NotChecked=0, Total=11990 [2021-12-06 20:06:30,497 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 136 mSDsluCounter, 3964 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 8808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6613 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:30,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4152 Invalid, 8808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2139 Invalid, 0 Unknown, 6613 Unchecked, 2.1s Time] [2021-12-06 20:06:30,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-12-06 20:06:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 434. [2021-12-06 20:06:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 313 states have (on average 1.1501597444089458) internal successors, (360), 323 states have internal predecessors, (360), 70 states have call successors, (70), 37 states have call predecessors, (70), 50 states have return successors, (138), 73 states have call predecessors, (138), 69 states have call successors, (138) [2021-12-06 20:06:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 568 transitions. [2021-12-06 20:06:30,520 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 568 transitions. Word has length 206 [2021-12-06 20:06:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:30,520 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 568 transitions. [2021-12-06 20:06:30,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 62 states have (on average 2.129032258064516) internal successors, (132), 58 states have internal predecessors, (132), 23 states have call successors, (29), 14 states have call predecessors, (29), 21 states have return successors, (27), 22 states have call predecessors, (27), 21 states have call successors, (27) [2021-12-06 20:06:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 568 transitions. [2021-12-06 20:06:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 20:06:30,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:30,523 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:30,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 20:06:30,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:30,725 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -76947081, now seen corresponding path program 2 times [2021-12-06 20:06:30,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407751655] [2021-12-06 20:06:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:30,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:30,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635758255] [2021-12-06 20:06:30,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:06:30,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:30,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:30,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 20:06:31,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:06:31,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:06:31,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-06 20:06:31,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:31,970 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 [2021-12-06 20:06:32,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:06:32,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 15 [2021-12-06 20:06:36,284 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:06:36,284 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 45 treesize of output 32 [2021-12-06 20:06:36,346 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-12-06 20:06:36,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-12-06 20:06:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:44,922 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 32 treesize of output 25 [2021-12-06 20:06:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:44,938 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 32 treesize of output 25 [2021-12-06 20:06:47,398 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3227 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3227))) is different from true [2021-12-06 20:06:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 125 proven. 25 refuted. 3 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 20:06:59,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:00,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407751655] [2021-12-06 20:07:00,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635758255] [2021-12-06 20:07:00,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635758255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:07:00,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:07:00,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 20:07:00,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870936800] [2021-12-06 20:07:00,300 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:00,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 20:07:00,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 20:07:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=686, Unknown=39, NotChecked=54, Total=870 [2021-12-06 20:07:00,301 INFO L87 Difference]: Start difference. First operand 434 states and 568 transitions. Second operand has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 26 states have internal predecessors, (114), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:07:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:14,504 INFO L93 Difference]: Finished difference Result 776 states and 1017 transitions. [2021-12-06 20:07:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 20:07:14,504 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 26 states have internal predecessors, (114), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) Word has length 206 [2021-12-06 20:07:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:14,507 INFO L225 Difference]: With dead ends: 776 [2021-12-06 20:07:14,507 INFO L226 Difference]: Without dead ends: 505 [2021-12-06 20:07:14,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 259 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=122, Invalid=1011, Unknown=61, NotChecked=66, Total=1260 [2021-12-06 20:07:14,508 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 262 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1814 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:14,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1243 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 717 Invalid, 0 Unknown, 1814 Unchecked, 0.6s Time] [2021-12-06 20:07:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-06 20:07:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2021-12-06 20:07:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 338 states have (on average 1.1538461538461537) internal successors, (390), 349 states have internal predecessors, (390), 73 states have call successors, (73), 38 states have call predecessors, (73), 53 states have return successors, (156), 77 states have call predecessors, (156), 72 states have call successors, (156) [2021-12-06 20:07:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 619 transitions. [2021-12-06 20:07:14,532 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 619 transitions. Word has length 206 [2021-12-06 20:07:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:14,533 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 619 transitions. [2021-12-06 20:07:14,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 26 states have internal predecessors, (114), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:07:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 619 transitions. [2021-12-06 20:07:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-06 20:07:14,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:14,536 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:14,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 20:07:14,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:14,737 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash -123613986, now seen corresponding path program 1 times [2021-12-06 20:07:14,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:14,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176260122] [2021-12-06 20:07:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:14,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:14,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981957618] [2021-12-06 20:07:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:14,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:14,822 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 20:07:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:15,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 139 conjunts are in the unsatisfiable core [2021-12-06 20:07:15,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:15,251 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 [2021-12-06 20:07:15,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:07:15,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 15 [2021-12-06 20:07:19,556 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:07:19,557 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 45 treesize of output 32 [2021-12-06 20:07:19,621 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-12-06 20:07:19,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-12-06 20:07:24,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:24,371 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 25 treesize of output 24 [2021-12-06 20:07:29,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:07:29,116 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 [2021-12-06 20:07:32,517 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:07:32,518 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 23 treesize of output 22 [2021-12-06 20:07:38,665 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:07:38,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-06 20:07:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:38,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2021-12-06 20:07:42,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:42,826 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 [2021-12-06 20:07:42,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:42,836 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 32 treesize of output 25 [2021-12-06 20:07:47,245 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3504 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3504))) (exists ((v_ArrVal_3505 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3505) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 20:07:57,906 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3506 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3506) |c_#memory_int|)) is different from true [2021-12-06 20:08:00,190 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:08:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 135 proven. 25 refuted. 0 times theorem prover too weak. 53 trivial. 10 not checked. [2021-12-06 20:08:00,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:08:17,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:08:17,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176260122] [2021-12-06 20:08:17,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:08:17,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981957618] [2021-12-06 20:08:17,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981957618] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:08:17,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:08:17,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-12-06 20:08:17,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100920954] [2021-12-06 20:08:17,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:08:17,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 20:08:17,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:08:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 20:08:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1520, Unknown=53, NotChecked=162, Total=1892 [2021-12-06 20:08:17,057 INFO L87 Difference]: Start difference. First operand 465 states and 619 transitions. Second operand has 40 states, 37 states have (on average 3.27027027027027) internal successors, (121), 34 states have internal predecessors, (121), 17 states have call successors, (30), 12 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) [2021-12-06 20:08:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:08:57,074 INFO L93 Difference]: Finished difference Result 823 states and 1073 transitions. [2021-12-06 20:08:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 20:08:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 3.27027027027027) internal successors, (121), 34 states have internal predecessors, (121), 17 states have call successors, (30), 12 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) Word has length 212 [2021-12-06 20:08:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:08:57,077 INFO L225 Difference]: With dead ends: 823 [2021-12-06 20:08:57,077 INFO L226 Difference]: Without dead ends: 525 [2021-12-06 20:08:57,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 243 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=268, Invalid=2715, Unknown=105, NotChecked=218, Total=3306 [2021-12-06 20:08:57,079 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 399 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2315 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:08:57,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1652 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1071 Invalid, 0 Unknown, 2315 Unchecked, 1.0s Time] [2021-12-06 20:08:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-06 20:08:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 479. [2021-12-06 20:08:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 350 states have (on average 1.1485714285714286) internal successors, (402), 363 states have internal predecessors, (402), 73 states have call successors, (73), 38 states have call predecessors, (73), 55 states have return successors, (156), 77 states have call predecessors, (156), 72 states have call successors, (156) [2021-12-06 20:08:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 631 transitions. [2021-12-06 20:08:57,105 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 631 transitions. Word has length 212 [2021-12-06 20:08:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:08:57,105 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 631 transitions. [2021-12-06 20:08:57,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 3.27027027027027) internal successors, (121), 34 states have internal predecessors, (121), 17 states have call successors, (30), 12 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 17 states have call successors, (28) [2021-12-06 20:08:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 631 transitions. [2021-12-06 20:08:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 20:08:57,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:08:57,114 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:08:57,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 20:08:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:08:57,315 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:08:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:08:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1491323995, now seen corresponding path program 1 times [2021-12-06 20:08:57,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:08:57,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711631906] [2021-12-06 20:08:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:08:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:08:57,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:08:57,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981092501] [2021-12-06 20:08:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:08:57,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:08:57,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:08:57,356 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:08:57,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 20:08:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:08:57,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 137 conjunts are in the unsatisfiable core [2021-12-06 20:08:57,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:09:00,094 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3737 Int) (v_ArrVal_3738 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3738)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3737))))) is different from true [2021-12-06 20:09:02,119 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3737 Int) (v_ArrVal_3738 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3737))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3738)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 20:09:02,198 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 20:09:02,198 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 21 treesize of output 30 [2021-12-06 20:09:02,213 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 20:09:02,214 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 21 treesize of output 30 [2021-12-06 20:09:07,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:09:07,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:09:09,115 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3746 Int) (v_ArrVal_3744 Int) (|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_3741 Int) (v_ArrVal_3739 Int)) (let ((.cse0 (+ |c_save_byte_from_array_#in~storage#1.offset| 8))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_3739) .cse0 v_ArrVal_3744))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_3741) .cse0 v_ArrVal_3746)))))) is different from true [2021-12-06 20:09:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:09,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:09,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2021-12-06 20:09:09,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:09,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:09,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2021-12-06 20:09:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 132 proven. 10 refuted. 0 times theorem prover too weak. 59 trivial. 9 not checked. [2021-12-06 20:09:09,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:09:11,877 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3759 Int) (v_ArrVal_3762 Int) (|v_save_byte_from_array_~storage#1.base_46| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_46| (store (store (select |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_46|) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.offset| v_ArrVal_3759) (+ |c_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.offset| 8) v_ArrVal_3762)) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 40 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) 0)) (forall ((v_ArrVal_3760 Int) (v_ArrVal_3761 Int) (|v_save_byte_from_array_~storage#1.base_46| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_46| (store (store (select |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_46|) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.offset| v_ArrVal_3760) (+ |c_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.offset| 8) v_ArrVal_3761)) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 40 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) 0))) is different from false [2021-12-06 20:09:11,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711631906] [2021-12-06 20:09:11,880 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:09:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981092501] [2021-12-06 20:09:11,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981092501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:09:11,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:09:11,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-12-06 20:09:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593760988] [2021-12-06 20:09:11,881 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:09:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 20:09:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 20:09:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1166, Unknown=5, NotChecked=284, Total=1560 [2021-12-06 20:09:11,882 INFO L87 Difference]: Start difference. First operand 479 states and 631 transitions. Second operand has 30 states, 25 states have (on average 4.68) internal successors, (117), 28 states have internal predecessors, (117), 14 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2021-12-06 20:09:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:30,590 INFO L93 Difference]: Finished difference Result 1078 states and 1484 transitions. [2021-12-06 20:09:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 20:09:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 4.68) internal successors, (117), 28 states have internal predecessors, (117), 14 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 206 [2021-12-06 20:09:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:30,594 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 20:09:30,594 INFO L226 Difference]: Without dead ends: 790 [2021-12-06 20:09:30,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=328, Invalid=3708, Unknown=12, NotChecked=508, Total=4556 [2021-12-06 20:09:30,596 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 252 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 3983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1563 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:30,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2770 Invalid, 3983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2328 Invalid, 0 Unknown, 1563 Unchecked, 1.6s Time] [2021-12-06 20:09:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-12-06 20:09:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 566. [2021-12-06 20:09:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 417 states have (on average 1.143884892086331) internal successors, (477), 429 states have internal predecessors, (477), 87 states have call successors, (87), 43 states have call predecessors, (87), 61 states have return successors, (199), 93 states have call predecessors, (199), 86 states have call successors, (199) [2021-12-06 20:09:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 763 transitions. [2021-12-06 20:09:30,632 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 763 transitions. Word has length 206 [2021-12-06 20:09:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:30,632 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 763 transitions. [2021-12-06 20:09:30,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 4.68) internal successors, (117), 28 states have internal predecessors, (117), 14 states have call successors, (29), 5 states have call predecessors, (29), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2021-12-06 20:09:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 763 transitions. [2021-12-06 20:09:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-06 20:09:30,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:30,635 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:30,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 20:09:30,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 20:09:30,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash -813445476, now seen corresponding path program 1 times [2021-12-06 20:09:30,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:30,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132382641] [2021-12-06 20:09:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:30,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:30,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:09:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323658751] [2021-12-06 20:09:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:30,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:09:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:09:30,922 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:09:30,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 20:09:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:31,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 20:09:31,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:09:31,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:09:31,521 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:09:31,521 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 22 treesize of output 21 [2021-12-06 20:09:40,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:09:42,057 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4017 Int) (v_ArrVal_4016 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_4016) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4017))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) is different from true [2021-12-06 20:09:42,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:42,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:42,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:42,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2021-12-06 20:09:42,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:42,089 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 22 treesize of output 21 [2021-12-06 20:09:44,229 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4021 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4021)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 20:10:04,681 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4021 Int)) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4021)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 0)) is different from true [2021-12-06 20:10:04,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 25 refuted. 3 times theorem prover too weak. 68 trivial. 2 not checked. [2021-12-06 20:10:04,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:10:07,109 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_134| Int) (v_ArrVal_4032 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_134| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_134|) 0 v_ArrVal_4032)) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 40 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) 0))) is different from false [2021-12-06 20:10:07,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:10:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132382641] [2021-12-06 20:10:07,111 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:10:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323658751] [2021-12-06 20:10:07,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323658751] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:10:07,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:10:07,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-06 20:10:07,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602546516] [2021-12-06 20:10:07,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:10:07,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 20:10:07,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:10:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 20:10:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=479, Unknown=15, NotChecked=188, Total=756 [2021-12-06 20:10:07,113 INFO L87 Difference]: Start difference. First operand 566 states and 763 transitions. Second operand has 27 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:10:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:10:19,949 INFO L93 Difference]: Finished difference Result 1000 states and 1344 transitions. [2021-12-06 20:10:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:10:19,950 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 15 states have call successors, (27) Word has length 212 [2021-12-06 20:10:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:10:19,953 INFO L225 Difference]: With dead ends: 1000 [2021-12-06 20:10:19,953 INFO L226 Difference]: Without dead ends: 632 [2021-12-06 20:10:19,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=101, Invalid=707, Unknown=20, NotChecked=228, Total=1056 [2021-12-06 20:10:19,954 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 147 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1903 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:10:19,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1471 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1087 Invalid, 0 Unknown, 1903 Unchecked, 0.8s Time] [2021-12-06 20:10:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-12-06 20:10:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 578. [2021-12-06 20:10:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 428 states have (on average 1.147196261682243) internal successors, (491), 440 states have internal predecessors, (491), 87 states have call successors, (87), 43 states have call predecessors, (87), 62 states have return successors, (192), 94 states have call predecessors, (192), 86 states have call successors, (192) [2021-12-06 20:10:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 770 transitions. [2021-12-06 20:10:19,986 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 770 transitions. Word has length 212 [2021-12-06 20:10:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:10:19,986 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 770 transitions. [2021-12-06 20:10:19,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 15 states have call successors, (27) [2021-12-06 20:10:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 770 transitions. [2021-12-06 20:10:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-06 20:10:19,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:10:19,990 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:10:20,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 20:10:20,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:10:20,190 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:10:20,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:10:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 309958153, now seen corresponding path program 1 times [2021-12-06 20:10:20,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:10:20,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299114984] [2021-12-06 20:10:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:10:20,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:10:20,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:10:20,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211037468] [2021-12-06 20:10:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:10:20,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:10:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:10:20,236 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:10:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 20:10:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:10:20,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-06 20:10:20,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:10:20,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:10:20,894 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 20:10:20,894 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 22 treesize of output 21 [2021-12-06 20:10:30,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:10:30,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 20:10:32,112 WARN L860 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_4286 Int) (v_ArrVal_4287 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_4286) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4287))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) is different from true [2021-12-06 20:10:32,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:32,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:32,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:32,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2021-12-06 20:10:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:32,154 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 22 treesize of output 21 [2021-12-06 20:10:34,296 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4292 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4292)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 20:11:03,014 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4292 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4292)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 0)) is different from true [2021-12-06 20:11:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 24 refuted. 3 times theorem prover too weak. 69 trivial. 2 not checked. [2021-12-06 20:11:03,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:11:05,033 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_158| Int) (v_ArrVal_4302 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_158| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_158|) 0 v_ArrVal_4302)) |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 40 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) 0))) is different from false [2021-12-06 20:11:05,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:11:05,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299114984] [2021-12-06 20:11:05,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:11:05,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211037468] [2021-12-06 20:11:05,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211037468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:11:05,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:11:05,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 20:11:05,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667536508] [2021-12-06 20:11:05,035 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:11:05,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 20:11:05,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:11:05,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 20:11:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=570, Unknown=17, NotChecked=204, Total=870 [2021-12-06 20:11:05,036 INFO L87 Difference]: Start difference. First operand 578 states and 770 transitions. Second operand has 29 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-06 20:11:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:11:19,445 INFO L93 Difference]: Finished difference Result 999 states and 1331 transitions. [2021-12-06 20:11:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 20:11:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) Word has length 217 [2021-12-06 20:11:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:11:19,448 INFO L225 Difference]: With dead ends: 999 [2021-12-06 20:11:19,448 INFO L226 Difference]: Without dead ends: 619 [2021-12-06 20:11:19,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=106, Invalid=818, Unknown=22, NotChecked=244, Total=1190 [2021-12-06 20:11:19,450 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 102 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2328 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:11:19,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1884 Invalid, 3889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1506 Invalid, 0 Unknown, 2328 Unchecked, 1.1s Time] [2021-12-06 20:11:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-06 20:11:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 578. [2021-12-06 20:11:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 428 states have (on average 1.147196261682243) internal successors, (491), 440 states have internal predecessors, (491), 87 states have call successors, (87), 43 states have call predecessors, (87), 62 states have return successors, (192), 94 states have call predecessors, (192), 86 states have call successors, (192) [2021-12-06 20:11:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 770 transitions. [2021-12-06 20:11:19,478 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 770 transitions. Word has length 217 [2021-12-06 20:11:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:11:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 770 transitions. [2021-12-06 20:11:19,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-06 20:11:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 770 transitions. [2021-12-06 20:11:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:11:19,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:11:19,481 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:11:19,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 20:11:19,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 20:11:19,683 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:11:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:11:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1857305091, now seen corresponding path program 3 times [2021-12-06 20:11:19,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:11:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418803032] [2021-12-06 20:11:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:11:19,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:11:19,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:11:19,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36304064] [2021-12-06 20:11:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:11:19,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:11:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:11:19,786 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:11:19,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 20:11:20,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 20:11:20,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:11:20,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 20:11:20,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:11:36,764 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:11:56,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:11:56,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 87 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 20:11:56,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:01,190 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4556 Int) (v_ArrVal_4557 Int) (v_ArrVal_4555 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_126| Int)) (let ((.cse2 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_126| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_126|) 0 v_ArrVal_4556)) c_aws_array_list_length_~list.base))) (let ((.cse1 (mod (select .cse2 (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616)) (.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_126| (store (select |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_126|) 0 v_ArrVal_4557)) c_aws_array_list_length_~list.base) .cse0) 0)) (and (<= (mod v_ArrVal_4556 18446744073709551616) .cse1) (not (= (mod (select .cse2 (+ c_aws_array_list_length_~list.offset 24)) 18446744073709551616) 0))) (not (= .cse1 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_126| (store (select |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_126|) 0 v_ArrVal_4555)) c_aws_array_list_length_~list.base) .cse0) 0)))))) is different from false [2021-12-06 20:12:01,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:01,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418803032] [2021-12-06 20:12:01,196 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:12:01,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36304064] [2021-12-06 20:12:01,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36304064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:01,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:12:01,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-12-06 20:12:01,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286944409] [2021-12-06 20:12:01,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:01,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 20:12:01,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 20:12:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=669, Unknown=9, NotChecked=52, Total=812 [2021-12-06 20:12:01,197 INFO L87 Difference]: Start difference. First operand 578 states and 770 transitions. Second operand has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-06 20:12:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:04,406 INFO L93 Difference]: Finished difference Result 1009 states and 1339 transitions. [2021-12-06 20:12:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 20:12:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) Word has length 208 [2021-12-06 20:12:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:04,410 INFO L225 Difference]: With dead ends: 1009 [2021-12-06 20:12:04,410 INFO L226 Difference]: Without dead ends: 684 [2021-12-06 20:12:04,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=170, Invalid=1231, Unknown=9, NotChecked=72, Total=1482 [2021-12-06 20:12:04,412 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 135 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1335 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:04,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1146 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 612 Invalid, 0 Unknown, 1335 Unchecked, 1.3s Time] [2021-12-06 20:12:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-12-06 20:12:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 585. [2021-12-06 20:12:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 432 states have (on average 1.1458333333333333) internal successors, (495), 444 states have internal predecessors, (495), 89 states have call successors, (89), 44 states have call predecessors, (89), 63 states have return successors, (197), 96 states have call predecessors, (197), 88 states have call successors, (197) [2021-12-06 20:12:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 781 transitions. [2021-12-06 20:12:04,451 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 781 transitions. Word has length 208 [2021-12-06 20:12:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:04,451 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 781 transitions. [2021-12-06 20:12:04,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-06 20:12:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 781 transitions. [2021-12-06 20:12:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:12:04,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:04,454 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:04,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 20:12:04,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 20:12:04,655 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:12:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1872888703, now seen corresponding path program 1 times [2021-12-06 20:12:04,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952805237] [2021-12-06 20:12:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:04,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:12:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:12:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 20:12:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:12:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:12:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:12:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:12:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:12:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:12:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:12:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:12:04,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:04,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952805237] [2021-12-06 20:12:04,877 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 20:12:04,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178794979] [2021-12-06 20:12:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:04,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:04,878 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 20:12:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:05,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:12:05,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-06 20:12:05,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:12:05,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178794979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:05,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:05,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:12:05,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231213220] [2021-12-06 20:12:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:05,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:05,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:05,442 INFO L87 Difference]: Start difference. First operand 585 states and 781 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:12:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:05,484 INFO L93 Difference]: Finished difference Result 1130 states and 1486 transitions. [2021-12-06 20:12:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2021-12-06 20:12:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:05,488 INFO L225 Difference]: With dead ends: 1130 [2021-12-06 20:12:05,488 INFO L226 Difference]: Without dead ends: 571 [2021-12-06 20:12:05,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:05,490 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:05,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:12:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-12-06 20:12:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-12-06 20:12:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 424 states have (on average 1.1462264150943395) internal successors, (486), 435 states have internal predecessors, (486), 86 states have call successors, (86), 42 states have call predecessors, (86), 60 states have return successors, (186), 93 states have call predecessors, (186), 85 states have call successors, (186) [2021-12-06 20:12:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 758 transitions. [2021-12-06 20:12:05,518 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 758 transitions. Word has length 208 [2021-12-06 20:12:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:05,518 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 758 transitions. [2021-12-06 20:12:05,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:12:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 758 transitions. [2021-12-06 20:12:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-06 20:12:05,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:05,521 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:05,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 20:12:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 20:12:05,721 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:12:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1707899076, now seen corresponding path program 1 times [2021-12-06 20:12:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064637592] [2021-12-06 20:12:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:05,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:05,762 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:12:05,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828414700] [2021-12-06 20:12:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:05,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:05,763 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:05,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2bc927-4741-426f-a6bc-11818d0e87da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 20:12:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:06,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 186 conjunts are in the unsatisfiable core [2021-12-06 20:12:06,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:08,500 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5071 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5069 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5069))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5071)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 20:12:10,527 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5071 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5069 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5069)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5071)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 20:12:10,602 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 20:12:10,602 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 21 treesize of output 30 [2021-12-06 20:12:10,617 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 20:12:10,617 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 21 treesize of output 30 [2021-12-06 20:12:10,902 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:12:10,902 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 20:12:12,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:12,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 20:12:12,444 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5078 Int) (v_ArrVal_5076 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_save_byte_from_array_#in~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_save_byte_from_array_#in~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_5076) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_5078)))) (exists ((v_ArrVal_5079 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_5079) |c_#memory_$Pointer$.base|)) (exists ((|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.base_BEFORE_CALL_3| Int)) (= (select |c_#valid| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_byte_backpointers~0#1.base_BEFORE_CALL_3|) 1))) is different from true [2021-12-06 20:12:12,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:12,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:12,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2021-12-06 20:12:12,476 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:12:12,476 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 16 treesize of output 22 [2021-12-06 20:12:12,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:12:14,700 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5082 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5082)))) (exists ((v_ArrVal_5080 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5080))))) is different from true [2021-12-06 20:12:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:17,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:17,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-12-06 20:12:17,363 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 [2021-12-06 20:12:17,368 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:17,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 20:12:29,790 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5085 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5085)))) is different from true [2021-12-06 20:13:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 90 proven. 49 refuted. 0 times theorem prover too weak. 42 trivial. 34 not checked. [2021-12-06 20:13:05,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:06,763 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5092 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_168| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_168| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_168|) 0 v_ArrVal_5092)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2021-12-06 20:13:06,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064637592] [2021-12-06 20:13:06,765 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:13:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828414700] [2021-12-06 20:13:06,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828414700] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:13:06,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:13:06,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-12-06 20:13:06,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467182028] [2021-12-06 20:13:06,765 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:06,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 20:13:06,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 20:13:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1725, Unknown=27, NotChecked=534, Total=2450 [2021-12-06 20:13:06,767 INFO L87 Difference]: Start difference. First operand 571 states and 758 transitions. Second operand has 49 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 18 states have call successors, (32), 11 states have call predecessors, (32), 15 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2021-12-06 20:13:09,268 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5071 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5069 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5069))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5071)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_5082 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5082)))) (exists ((v_ArrVal_5080 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5080)))) (exists ((v_ArrVal_5085 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5085))))) is different from true