./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:01:49,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:01:49,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:01:49,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:01:49,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:01:49,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:01:49,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:01:49,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:01:49,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:01:49,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:01:49,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:01:49,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:01:49,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:01:49,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:01:49,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:01:49,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:01:49,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:01:49,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:01:49,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:01:49,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:01:49,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:01:49,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:01:49,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:01:49,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:01:49,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:01:49,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:01:49,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:01:49,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:01:49,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:01:49,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:01:49,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:01:49,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:01:49,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:01:49,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:01:49,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:01:49,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:01:49,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:01:49,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:01:49,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:01:49,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:01:49,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:01:49,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 01:01:49,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:01:49,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:01:49,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:01:49,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:01:49,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:01:49,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:01:49,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:01:49,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:01:49,634 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:01:49,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:01:49,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:01:49,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:01:49,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:01:49,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:49,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:01:49,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:01:49,637 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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2021-12-07 01:01:49,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:01:49,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:01:49,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:01:49,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:01:49,844 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:01:49,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2021-12-07 01:01:49,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/data/0e7ade897/a4f41a094cfd4691a7a6874745300a96/FLAGa4c5c6db0 [2021-12-07 01:01:50,470 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:01:50,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2021-12-07 01:01:50,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/data/0e7ade897/a4f41a094cfd4691a7a6874745300a96/FLAGa4c5c6db0 [2021-12-07 01:01:50,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/data/0e7ade897/a4f41a094cfd4691a7a6874745300a96 [2021-12-07 01:01:50,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:01:50,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:01:50,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:50,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:01:50,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:01:50,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:50" (1/1) ... [2021-12-07 01:01:50,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2007cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:50, skipping insertion in model container [2021-12-07 01:01:50,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:50" (1/1) ... [2021-12-07 01:01:50,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:01:50,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:01:50,924 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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2021-12-07 01:01:50,930 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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2021-12-07 01:01:51,575 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:01:51,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,639 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,640 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:51,907 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:01:51,908 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:01:51,908 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:01:51,909 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:01:51,910 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:01:51,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:01:51,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:01:51,912 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:01:51,912 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:01:51,913 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:01:52,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:52,086 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:01:52,096 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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2021-12-07 01:01:52,097 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_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2021-12-07 01:01:52,122 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 01:01:52,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 01:01:52,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 01:01:52,187 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 01:01:52,188 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 01:01:52,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 01:01:52,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 01:01:52,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 01:01:52,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 01:01:52,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 01:01:52,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 01:01:52,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 01:01:52,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:52,406 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:01:52,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52 WrapperNode [2021-12-07 01:01:52,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:52,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:52,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:01:52,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:01:52,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,529 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 847 [2021-12-07 01:01:52,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:52,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:01:52,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:01:52,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:01:52,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:01:52,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:01:52,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:01:52,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:01:52,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (1/1) ... [2021-12-07 01:01:52,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:52,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:52,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:01:52,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:01:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:01:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-07 01:01:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-07 01:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-07 01:01:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-07 01:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-07 01:01:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-07 01:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-07 01:01:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-07 01:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:01:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 01:01:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:01:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-07 01:01:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:01:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:01:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 01:01:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-07 01:01:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-07 01:01:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-07 01:01:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-07 01:01:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-07 01:01:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-07 01:01:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 01:01:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-07 01:01:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-07 01:01:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 01:01:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 01:01:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-07 01:01:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-07 01:01:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 01:01:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-07 01:01:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2021-12-07 01:01:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2021-12-07 01:01:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:01:52,899 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:01:52,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:01:53,593 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:01:53,603 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:01:53,603 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 01:01:53,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:53 BoogieIcfgContainer [2021-12-07 01:01:53,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:01:53,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:01:53,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:01:53,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:01:53,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:01:50" (1/3) ... [2021-12-07 01:01:53,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87b41ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:53, skipping insertion in model container [2021-12-07 01:01:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:52" (2/3) ... [2021-12-07 01:01:53,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87b41ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:53, skipping insertion in model container [2021-12-07 01:01:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:53" (3/3) ... [2021-12-07 01:01:53,614 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2021-12-07 01:01:53,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:01:53,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:01:53,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:01:53,673 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 [2021-12-07 01:01:53,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:01:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-07 01:01:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 01:01:53,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:53,717 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:53,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1870768140, now seen corresponding path program 1 times [2021-12-07 01:01:53,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:53,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569089377] [2021-12-07 01:01:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:53,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:01:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:01:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:01:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 01:01:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-07 01:01:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 01:01:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:01:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-07 01:01:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-07 01:01:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 01:01:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 01:01:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:01:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 01:01:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 01:01:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 01:01:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 01:01:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 01:01:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 01:01:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 01:01:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 01:01:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 01:01:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-12-07 01:01:54,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:54,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569089377] [2021-12-07 01:01:54,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569089377] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:01:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449607575] [2021-12-07 01:01:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:54,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:54,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:54,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:01:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:54,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:01:54,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-07 01:01:55,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:55,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449607575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:55,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:01:55,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-07 01:01:55,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905232376] [2021-12-07 01:01:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:55,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:01:55,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:01:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:01:55,084 INFO L87 Difference]: Start difference. First operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-07 01:01:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:55,363 INFO L93 Difference]: Finished difference Result 557 states and 840 transitions. [2021-12-07 01:01:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:01:55,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 146 [2021-12-07 01:01:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:55,376 INFO L225 Difference]: With dead ends: 557 [2021-12-07 01:01:55,376 INFO L226 Difference]: Without dead ends: 278 [2021-12-07 01:01:55,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:01:55,384 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 385 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:55,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1229 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:01:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-07 01:01:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-12-07 01:01:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 163 states have internal predecessors, (195), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2021-12-07 01:01:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 396 transitions. [2021-12-07 01:01:55,457 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 396 transitions. Word has length 146 [2021-12-07 01:01:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:55,458 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 396 transitions. [2021-12-07 01:01:55,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-07 01:01:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 396 transitions. [2021-12-07 01:01:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 01:01:55,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:55,464 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:55,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:01:55,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-07 01:01:55,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash 265363754, now seen corresponding path program 1 times [2021-12-07 01:01:55,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:55,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580766131] [2021-12-07 01:01:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:55,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:55,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:55,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992259454] [2021-12-07 01:01:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:55,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:55,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:55,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:01:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:56,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:01:56,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-12-07 01:01:56,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:56,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:56,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580766131] [2021-12-07 01:01:56,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:56,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992259454] [2021-12-07 01:01:56,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992259454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:56,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:56,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:01:56,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476885225] [2021-12-07 01:01:56,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:56,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:01:56,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:01:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:01:56,200 INFO L87 Difference]: Start difference. First operand 278 states and 396 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 01:01:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:56,240 INFO L93 Difference]: Finished difference Result 535 states and 784 transitions. [2021-12-07 01:01:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:01:56,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 176 [2021-12-07 01:01:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:56,244 INFO L225 Difference]: With dead ends: 535 [2021-12-07 01:01:56,244 INFO L226 Difference]: Without dead ends: 283 [2021-12-07 01:01:56,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:01:56,246 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1124 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 [2021-12-07 01:01:56,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1124 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:01:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-07 01:01:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2021-12-07 01:01:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2021-12-07 01:01:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 398 transitions. [2021-12-07 01:01:56,270 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 398 transitions. Word has length 176 [2021-12-07 01:01:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:56,271 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 398 transitions. [2021-12-07 01:01:56,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 01:01:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 398 transitions. [2021-12-07 01:01:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 01:01:56,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:56,274 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:56,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:01:56,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:56,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1664860694, now seen corresponding path program 1 times [2021-12-07 01:01:56,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:56,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249249220] [2021-12-07 01:01:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:56,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:56,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115227242] [2021-12-07 01:01:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:56,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:56,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:01:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:56,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:01:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-07 01:01:57,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:57,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249249220] [2021-12-07 01:01:57,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115227242] [2021-12-07 01:01:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115227242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:57,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:01:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818097948] [2021-12-07 01:01:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:57,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:01:57,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:01:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:01:57,051 INFO L87 Difference]: Start difference. First operand 280 states and 398 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-07 01:01:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:57,395 INFO L93 Difference]: Finished difference Result 512 states and 726 transitions. [2021-12-07 01:01:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:01:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 176 [2021-12-07 01:01:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:57,400 INFO L225 Difference]: With dead ends: 512 [2021-12-07 01:01:57,400 INFO L226 Difference]: Without dead ends: 280 [2021-12-07 01:01:57,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:01:57,402 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 444 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:57,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1574 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:01:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-07 01:01:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-12-07 01:01:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2021-12-07 01:01:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 394 transitions. [2021-12-07 01:01:57,434 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 394 transitions. Word has length 176 [2021-12-07 01:01:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:57,434 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 394 transitions. [2021-12-07 01:01:57,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-07 01:01:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 394 transitions. [2021-12-07 01:01:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-07 01:01:57,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:57,438 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:57,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:01:57,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:57,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -331838195, now seen corresponding path program 2 times [2021-12-07 01:01:57,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129096345] [2021-12-07 01:01:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:57,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:57,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193816495] [2021-12-07 01:01:57,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:01:57,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:57,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:57,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:57,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:01:57,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:01:57,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:01:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:01:57,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-07 01:01:58,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:58,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:58,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129096345] [2021-12-07 01:01:58,072 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:58,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193816495] [2021-12-07 01:01:58,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193816495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:58,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:58,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:01:58,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277510525] [2021-12-07 01:01:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:58,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:01:58,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:01:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:01:58,074 INFO L87 Difference]: Start difference. First operand 280 states and 394 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-07 01:01:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:58,103 INFO L93 Difference]: Finished difference Result 494 states and 684 transitions. [2021-12-07 01:01:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:01:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2021-12-07 01:01:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:58,107 INFO L225 Difference]: With dead ends: 494 [2021-12-07 01:01:58,107 INFO L226 Difference]: Without dead ends: 285 [2021-12-07 01:01:58,109 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 [2021-12-07 01:01:58,110 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:58,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1499 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:01:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-07 01:01:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-07 01:01:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2021-12-07 01:01:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 400 transitions. [2021-12-07 01:01:58,131 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 400 transitions. Word has length 191 [2021-12-07 01:01:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:58,132 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 400 transitions. [2021-12-07 01:01:58,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-07 01:01:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 400 transitions. [2021-12-07 01:01:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-07 01:01:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:58,136 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:58,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:01:58,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:58,338 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1595114899, now seen corresponding path program 1 times [2021-12-07 01:01:58,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:58,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100226265] [2021-12-07 01:01:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:58,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:58,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:58,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206006224] [2021-12-07 01:01:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:58,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:58,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:58,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:01:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:58,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:01:58,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-07 01:01:59,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:59,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:59,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100226265] [2021-12-07 01:01:59,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:59,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206006224] [2021-12-07 01:01:59,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206006224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:59,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:59,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 01:01:59,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692757160] [2021-12-07 01:01:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:59,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:01:59,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:01:59,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:01:59,006 INFO L87 Difference]: Start difference. First operand 285 states and 400 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-07 01:01:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:59,338 INFO L93 Difference]: Finished difference Result 516 states and 720 transitions. [2021-12-07 01:01:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:01:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 197 [2021-12-07 01:01:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:59,340 INFO L225 Difference]: With dead ends: 516 [2021-12-07 01:01:59,340 INFO L226 Difference]: Without dead ends: 285 [2021-12-07 01:01:59,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:01:59,342 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 494 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:59,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1781 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:01:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-07 01:01:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-07 01:01:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2021-12-07 01:01:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 394 transitions. [2021-12-07 01:01:59,355 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 394 transitions. Word has length 197 [2021-12-07 01:01:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:59,356 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 394 transitions. [2021-12-07 01:01:59,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-07 01:01:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 394 transitions. [2021-12-07 01:01:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-07 01:01:59,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:59,358 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-07 01:01:59,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:01:59,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:59,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -895724094, now seen corresponding path program 2 times [2021-12-07 01:01:59,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:59,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059326888] [2021-12-07 01:01:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:59,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:59,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:59,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448826439] [2021-12-07 01:01:59,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:01:59,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:59,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:59,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:59,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:02:00,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:02:00,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:00,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 01:02:00,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-07 01:02:00,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:00,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:00,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059326888] [2021-12-07 01:02:00,717 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:00,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448826439] [2021-12-07 01:02:00,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448826439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:00,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:00,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:02:00,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15647170] [2021-12-07 01:02:00,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:00,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:02:00,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:02:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:02:00,718 INFO L87 Difference]: Start difference. First operand 285 states and 394 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-07 01:02:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:01,061 INFO L93 Difference]: Finished difference Result 513 states and 703 transitions. [2021-12-07 01:02:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:02:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 212 [2021-12-07 01:02:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:01,063 INFO L225 Difference]: With dead ends: 513 [2021-12-07 01:02:01,063 INFO L226 Difference]: Without dead ends: 285 [2021-12-07 01:02:01,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:01,064 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 542 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:01,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 2020 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:02:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-07 01:02:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-07 01:02:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2021-12-07 01:02:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 390 transitions. [2021-12-07 01:02:01,076 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 390 transitions. Word has length 212 [2021-12-07 01:02:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:01,077 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 390 transitions. [2021-12-07 01:02:01,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-07 01:02:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 390 transitions. [2021-12-07 01:02:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-07 01:02:01,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:01,079 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:01,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:02:01,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:01,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash 247081526, now seen corresponding path program 1 times [2021-12-07 01:02:01,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:01,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520285681] [2021-12-07 01:02:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:01,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:01,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:01,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718304170] [2021-12-07 01:02:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:01,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:01,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:01,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:01,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:02:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3285 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:02:01,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-07 01:02:01,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:01,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520285681] [2021-12-07 01:02:01,983 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718304170] [2021-12-07 01:02:01,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718304170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:01,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:01,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 01:02:01,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905057750] [2021-12-07 01:02:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:01,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:02:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:02:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:02:01,985 INFO L87 Difference]: Start difference. First operand 285 states and 390 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 01:02:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:02,099 INFO L93 Difference]: Finished difference Result 646 states and 908 transitions. [2021-12-07 01:02:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:02:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2021-12-07 01:02:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:02,103 INFO L225 Difference]: With dead ends: 646 [2021-12-07 01:02:02,103 INFO L226 Difference]: Without dead ends: 412 [2021-12-07 01:02:02,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:02:02,105 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 133 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:02,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 3339 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:02:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-07 01:02:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2021-12-07 01:02:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 223 states have (on average 1.2152466367713004) internal successors, (271), 225 states have internal predecessors, (271), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2021-12-07 01:02:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 554 transitions. [2021-12-07 01:02:02,125 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 554 transitions. Word has length 242 [2021-12-07 01:02:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:02,126 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 554 transitions. [2021-12-07 01:02:02,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 01:02:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 554 transitions. [2021-12-07 01:02:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-07 01:02:02,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:02,128 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:02,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:02:02,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 01:02:02,329 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:02,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1060060872, now seen corresponding path program 1 times [2021-12-07 01:02:02,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:02,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203928989] [2021-12-07 01:02:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:02,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:02,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:02,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125305397] [2021-12-07 01:02:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:02,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:02,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:02:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:02,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 3282 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 01:02:02,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-07 01:02:02,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:02,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:02,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203928989] [2021-12-07 01:02:02,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:02,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125305397] [2021-12-07 01:02:02,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125305397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:02,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:02,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:02:02,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404264478] [2021-12-07 01:02:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:02,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:02:02,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:02:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:02:02,999 INFO L87 Difference]: Start difference. First operand 388 states and 554 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 01:02:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:03,167 INFO L93 Difference]: Finished difference Result 827 states and 1198 transitions. [2021-12-07 01:02:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:02:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2021-12-07 01:02:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:03,173 INFO L225 Difference]: With dead ends: 827 [2021-12-07 01:02:03,173 INFO L226 Difference]: Without dead ends: 500 [2021-12-07 01:02:03,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:02:03,175 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 127 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:03,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 2994 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:02:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-07 01:02:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 478. [2021-12-07 01:02:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 270 states have (on average 1.2185185185185186) internal successors, (329), 272 states have internal predecessors, (329), 180 states have call successors, (180), 24 states have call predecessors, (180), 27 states have return successors, (189), 181 states have call predecessors, (189), 179 states have call successors, (189) [2021-12-07 01:02:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 698 transitions. [2021-12-07 01:02:03,210 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 698 transitions. Word has length 242 [2021-12-07 01:02:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 698 transitions. [2021-12-07 01:02:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 01:02:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 698 transitions. [2021-12-07 01:02:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-07 01:02:03,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:03,214 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:03,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:02:03,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 01:02:03,415 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash -642172170, now seen corresponding path program 1 times [2021-12-07 01:02:03,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:03,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223373990] [2021-12-07 01:02:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:03,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:03,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:03,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484677705] [2021-12-07 01:02:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:03,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:03,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:03,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:03,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:02:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:03,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-07 01:02:03,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 282 proven. 1 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 01:02:04,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:02:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2021-12-07 01:02:04,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:04,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223373990] [2021-12-07 01:02:04,559 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:04,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484677705] [2021-12-07 01:02:04,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484677705] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:02:04,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:02:04,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-12-07 01:02:04,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727438297] [2021-12-07 01:02:04,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:02:04,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:02:04,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:02:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:02:04,561 INFO L87 Difference]: Start difference. First operand 478 states and 698 transitions. Second operand has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-12-07 01:02:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:04,783 INFO L93 Difference]: Finished difference Result 634 states and 884 transitions. [2021-12-07 01:02:04,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:02:04,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 242 [2021-12-07 01:02:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:04,786 INFO L225 Difference]: With dead ends: 634 [2021-12-07 01:02:04,786 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:02:04,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:02:04,789 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 3 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:04,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2738 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:02:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:02:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-12-07 01:02:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 172 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 25 states have return successors, (97), 93 states have call predecessors, (97), 92 states have call successors, (97) [2021-12-07 01:02:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 391 transitions. [2021-12-07 01:02:04,810 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 391 transitions. Word has length 242 [2021-12-07 01:02:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:04,810 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 391 transitions. [2021-12-07 01:02:04,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-12-07 01:02:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 391 transitions. [2021-12-07 01:02:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-07 01:02:04,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:04,813 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:04,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:02:05,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:05,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2101338209, now seen corresponding path program 1 times [2021-12-07 01:02:05,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:05,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323556581] [2021-12-07 01:02:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:05,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:05,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304068392] [2021-12-07 01:02:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:05,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:05,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:05,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:02:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:05,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-07 01:02:05,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:05,694 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 19 treesize of output 7 [2021-12-07 01:02:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 239 proven. 4 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-07 01:02:05,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:02:06,517 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-07 01:02:06,517 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 30 treesize of output 25 [2021-12-07 01:02:06,522 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-07 01:02:06,523 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 24 treesize of output 12 [2021-12-07 01:02:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 27 proven. 78 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-07 01:02:06,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323556581] [2021-12-07 01:02:06,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304068392] [2021-12-07 01:02:06,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304068392] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:02:06,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:02:06,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-12-07 01:02:06,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378641213] [2021-12-07 01:02:06,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:02:06,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 01:02:06,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 01:02:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-12-07 01:02:06,578 INFO L87 Difference]: Start difference. First operand 288 states and 391 transitions. Second operand has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) [2021-12-07 01:02:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:07,505 INFO L93 Difference]: Finished difference Result 564 states and 777 transitions. [2021-12-07 01:02:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:02:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) Word has length 253 [2021-12-07 01:02:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:07,507 INFO L225 Difference]: With dead ends: 564 [2021-12-07 01:02:07,508 INFO L226 Difference]: Without dead ends: 294 [2021-12-07 01:02:07,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 01:02:07,510 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 70 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:07,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 4470 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1056 Invalid, 0 Unknown, 120 Unchecked, 0.6s Time] [2021-12-07 01:02:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-07 01:02:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2021-12-07 01:02:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 171 states have (on average 1.1871345029239766) internal successors, (203), 175 states have internal predecessors, (203), 93 states have call successors, (93), 22 states have call predecessors, (93), 26 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2021-12-07 01:02:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 411 transitions. [2021-12-07 01:02:07,525 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 411 transitions. Word has length 253 [2021-12-07 01:02:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:07,525 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 411 transitions. [2021-12-07 01:02:07,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) [2021-12-07 01:02:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 411 transitions. [2021-12-07 01:02:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-07 01:02:07,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:07,527 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:07,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:02:07,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:02:07,728 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1612948967, now seen corresponding path program 1 times [2021-12-07 01:02:07,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:07,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28560390] [2021-12-07 01:02:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:07,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:07,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:07,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037247459] [2021-12-07 01:02:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:07,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:07,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:02:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:08,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:02:08,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-12-07 01:02:08,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:08,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28560390] [2021-12-07 01:02:08,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037247459] [2021-12-07 01:02:08,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037247459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:08,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:08,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:02:08,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855514235] [2021-12-07 01:02:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:08,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:02:08,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:08,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:02:08,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:02:08,372 INFO L87 Difference]: Start difference. First operand 291 states and 411 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:02:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:08,566 INFO L93 Difference]: Finished difference Result 561 states and 831 transitions. [2021-12-07 01:02:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:02:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2021-12-07 01:02:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:08,569 INFO L225 Difference]: With dead ends: 561 [2021-12-07 01:02:08,569 INFO L226 Difference]: Without dead ends: 296 [2021-12-07 01:02:08,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:02:08,571 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 7 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:08,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1447 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:02:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-07 01:02:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 292. [2021-12-07 01:02:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 172 states have (on average 1.186046511627907) internal successors, (204), 176 states have internal predecessors, (204), 93 states have call successors, (93), 22 states have call predecessors, (93), 26 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2021-12-07 01:02:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 412 transitions. [2021-12-07 01:02:08,585 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 412 transitions. Word has length 255 [2021-12-07 01:02:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:08,585 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 412 transitions. [2021-12-07 01:02:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:02:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 412 transitions. [2021-12-07 01:02:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-07 01:02:08,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:08,587 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:08,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:02:08,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:08,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1368188443, now seen corresponding path program 1 times [2021-12-07 01:02:08,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:08,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934288829] [2021-12-07 01:02:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:08,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:08,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:08,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929848854] [2021-12-07 01:02:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:08,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:08,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:08,871 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:08,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:02:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-07 01:02:09,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:16,777 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 25 treesize of output 17 [2021-12-07 01:02:16,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-07 01:02:16,784 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 18 treesize of output 10 [2021-12-07 01:02:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 284 proven. 6 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-07 01:02:16,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:02:17,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-07 01:02:17,618 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-07 01:02:17,697 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 27 treesize of output 15 [2021-12-07 01:02:17,808 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-07 01:02:17,808 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 23 treesize of output 18 [2021-12-07 01:02:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-12-07 01:02:17,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934288829] [2021-12-07 01:02:17,882 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929848854] [2021-12-07 01:02:17,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929848854] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:02:17,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:02:17,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2021-12-07 01:02:17,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325045186] [2021-12-07 01:02:17,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:02:17,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-07 01:02:17,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-07 01:02:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 01:02:17,884 INFO L87 Difference]: Start difference. First operand 292 states and 412 transitions. Second operand has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2021-12-07 01:02:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:21,489 INFO L93 Difference]: Finished difference Result 1162 states and 1782 transitions. [2021-12-07 01:02:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-07 01:02:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) Word has length 255 [2021-12-07 01:02:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:21,495 INFO L225 Difference]: With dead ends: 1162 [2021-12-07 01:02:21,495 INFO L226 Difference]: Without dead ends: 905 [2021-12-07 01:02:21,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=316, Invalid=2546, Unknown=0, NotChecked=0, Total=2862 [2021-12-07 01:02:21,498 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 791 mSDsluCounter, 7587 mSDsCounter, 0 mSdLazyCounter, 4991 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 8072 SdHoareTripleChecker+Invalid, 7660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 4991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2395 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:21,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 8072 Invalid, 7660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 4991 Invalid, 0 Unknown, 2395 Unchecked, 3.0s Time] [2021-12-07 01:02:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-12-07 01:02:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 824. [2021-12-07 01:02:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 482 states have (on average 1.1784232365145229) internal successors, (568), 490 states have internal predecessors, (568), 269 states have call successors, (269), 62 states have call predecessors, (269), 72 states have return successors, (451), 271 states have call predecessors, (451), 266 states have call successors, (451) [2021-12-07 01:02:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1288 transitions. [2021-12-07 01:02:21,545 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1288 transitions. Word has length 255 [2021-12-07 01:02:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:21,545 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1288 transitions. [2021-12-07 01:02:21,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2021-12-07 01:02:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1288 transitions. [2021-12-07 01:02:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-12-07 01:02:21,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:21,548 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1] [2021-12-07 01:02:21,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 01:02:21,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 01:02:21,750 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 366917770, now seen corresponding path program 1 times [2021-12-07 01:02:21,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431750071] [2021-12-07 01:02:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:21,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:21,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:21,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705945646] [2021-12-07 01:02:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:21,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:21,831 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:02:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:22,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-07 01:02:22,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:22,275 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 [2021-12-07 01:02:22,379 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 [2021-12-07 01:02:22,413 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 [2021-12-07 01:02:26,491 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 01:02:26,491 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 [2021-12-07 01:02:26,538 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-12-07 01:02:26,538 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 [2021-12-07 01:02:26,637 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2129 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2129) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:02:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:02:28,718 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 27 treesize of output 27 [2021-12-07 01:02:28,723 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:28,724 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 [2021-12-07 01:03:16,698 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2130 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2130)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:03:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 315 proven. 37 refuted. 0 times theorem prover too weak. 202 trivial. 3 not checked. [2021-12-07 01:03:43,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:03:44,684 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2138 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141|) 0 v_ArrVal_2138)) |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.offset| 32)) 0))) is different from false [2021-12-07 01:03:44,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:44,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431750071] [2021-12-07 01:03:44,686 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:03:44,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705945646] [2021-12-07 01:03:44,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705945646] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:03:44,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:03:44,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-12-07 01:03:44,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379457649] [2021-12-07 01:03:44,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:03:44,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:03:44,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:03:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=557, Unknown=27, NotChecked=150, Total=812 [2021-12-07 01:03:44,688 INFO L87 Difference]: Start difference. First operand 824 states and 1288 transitions. Second operand has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2021-12-07 01:04:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,965 INFO L93 Difference]: Finished difference Result 1479 states and 2713 transitions. [2021-12-07 01:04:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 01:04:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) Word has length 261 [2021-12-07 01:04:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,974 INFO L225 Difference]: With dead ends: 1479 [2021-12-07 01:04:19,974 INFO L226 Difference]: Without dead ends: 1220 [2021-12-07 01:04:19,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 368 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=141, Invalid=1226, Unknown=51, NotChecked=222, Total=1640 [2021-12-07 01:04:19,977 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 305 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 3499 SdHoareTripleChecker+Invalid, 8741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6310 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 3499 Invalid, 8741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2125 Invalid, 0 Unknown, 6310 Unchecked, 1.0s Time] [2021-12-07 01:04:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-12-07 01:04:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 896. [2021-12-07 01:04:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 532 states have (on average 1.169172932330827) internal successors, (622), 545 states have internal predecessors, (622), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (619), 281 states have call predecessors, (619), 275 states have call successors, (619) [2021-12-07 01:04:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1519 transitions. [2021-12-07 01:04:20,058 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1519 transitions. Word has length 261 [2021-12-07 01:04:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,058 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1519 transitions. [2021-12-07 01:04:20,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2021-12-07 01:04:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1519 transitions. [2021-12-07 01:04:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-12-07 01:04:20,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,062 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:20,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 01:04:20,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:20,263 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1304713533, now seen corresponding path program 1 times [2021-12-07 01:04:20,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868016746] [2021-12-07 01:04:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,305 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:20,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921319636] [2021-12-07 01:04:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:20,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:20,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 01:04:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-07 01:04:20,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 347 proven. 1 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-12-07 01:04:20,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:04:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 46 proven. 81 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-12-07 01:04:21,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:21,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868016746] [2021-12-07 01:04:21,707 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:21,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921319636] [2021-12-07 01:04:21,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921319636] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:04:21,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:04:21,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 31 [2021-12-07 01:04:21,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449172307] [2021-12-07 01:04:21,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:04:21,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-07 01:04:21,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-07 01:04:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2021-12-07 01:04:21,709 INFO L87 Difference]: Start difference. First operand 896 states and 1519 transitions. Second operand has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2021-12-07 01:04:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:22,334 INFO L93 Difference]: Finished difference Result 1637 states and 2809 transitions. [2021-12-07 01:04:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:04:22,335 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) Word has length 285 [2021-12-07 01:04:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:22,340 INFO L225 Difference]: With dead ends: 1637 [2021-12-07 01:04:22,340 INFO L226 Difference]: Without dead ends: 900 [2021-12-07 01:04:22,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-12-07 01:04:22,345 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 39 mSDsluCounter, 8659 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9027 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:22,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 9027 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:04:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-12-07 01:04:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 896. [2021-12-07 01:04:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 532 states have (on average 1.169172932330827) internal successors, (622), 545 states have internal predecessors, (622), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (607), 281 states have call predecessors, (607), 275 states have call successors, (607) [2021-12-07 01:04:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1507 transitions. [2021-12-07 01:04:22,435 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1507 transitions. Word has length 285 [2021-12-07 01:04:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:22,435 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1507 transitions. [2021-12-07 01:04:22,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2021-12-07 01:04:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1507 transitions. [2021-12-07 01:04:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-07 01:04:22,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:22,439 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:22,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 01:04:22,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:04:22,640 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:22,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash -975929849, now seen corresponding path program 2 times [2021-12-07 01:04:22,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:22,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089856387] [2021-12-07 01:04:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:22,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:22,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:22,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195940831] [2021-12-07 01:04:22,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:04:22,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:22,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:22,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 01:04:23,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:04:23,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:04:23,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-07 01:04:23,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 222 proven. 9 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-12-07 01:04:24,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:04:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 79 proven. 15 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-07 01:04:24,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:24,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089856387] [2021-12-07 01:04:24,803 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:24,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195940831] [2021-12-07 01:04:24,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195940831] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:04:24,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:04:24,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 27 [2021-12-07 01:04:24,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294918714] [2021-12-07 01:04:24,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:04:24,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:04:24,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:24,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:04:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:04:24,805 INFO L87 Difference]: Start difference. First operand 896 states and 1507 transitions. Second operand has 27 states, 23 states have (on average 5.826086956521739) internal successors, (134), 18 states have internal predecessors, (134), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (47), 11 states have call predecessors, (47), 6 states have call successors, (47) [2021-12-07 01:04:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:25,313 INFO L93 Difference]: Finished difference Result 1586 states and 2671 transitions. [2021-12-07 01:04:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:04:25,313 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.826086956521739) internal successors, (134), 18 states have internal predecessors, (134), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (47), 11 states have call predecessors, (47), 6 states have call successors, (47) Word has length 279 [2021-12-07 01:04:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:25,319 INFO L225 Difference]: With dead ends: 1586 [2021-12-07 01:04:25,319 INFO L226 Difference]: Without dead ends: 900 [2021-12-07 01:04:25,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:04:25,322 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 44 mSDsluCounter, 7641 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8011 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:25,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 8011 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:04:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-12-07 01:04:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 896. [2021-12-07 01:04:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 532 states have (on average 1.169172932330827) internal successors, (622), 545 states have internal predecessors, (622), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (598), 281 states have call predecessors, (598), 275 states have call successors, (598) [2021-12-07 01:04:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1498 transitions. [2021-12-07 01:04:25,373 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1498 transitions. Word has length 279 [2021-12-07 01:04:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:25,374 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1498 transitions. [2021-12-07 01:04:25,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.826086956521739) internal successors, (134), 18 states have internal predecessors, (134), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (47), 11 states have call predecessors, (47), 6 states have call successors, (47) [2021-12-07 01:04:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1498 transitions. [2021-12-07 01:04:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-07 01:04:25,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:25,377 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:25,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 01:04:25,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:04:25,578 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1343783589, now seen corresponding path program 1 times [2021-12-07 01:04:25,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:25,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597309741] [2021-12-07 01:04:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:25,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:25,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246115530] [2021-12-07 01:04:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:25,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:25,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:25,623 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:25,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 01:04:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:26,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-07 01:04:26,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:26,076 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 [2021-12-07 01:04:30,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:04:30,991 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 21 treesize of output 20 [2021-12-07 01:04:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:04:30,995 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 21 treesize of output 20 [2021-12-07 01:04:32,515 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2606 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2606))) (exists ((v_ArrVal_2607 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2607) |c_#memory_$Pointer$.base|))) is different from true [2021-12-07 01:04:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:04:32,806 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 16 treesize of output 18 [2021-12-07 01:04:32,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:04:32,811 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 16 treesize of output 18 [2021-12-07 01:04:32,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:04:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-12-07 01:04:32,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:04:33,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:33,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597309741] [2021-12-07 01:04:33,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:33,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246115530] [2021-12-07 01:04:33,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246115530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:04:33,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:04:33,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-07 01:04:33,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645527650] [2021-12-07 01:04:33,281 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:04:33,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:04:33,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:04:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=192, Unknown=12, NotChecked=28, Total=272 [2021-12-07 01:04:33,282 INFO L87 Difference]: Start difference. First operand 896 states and 1498 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-07 01:04:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:37,070 INFO L93 Difference]: Finished difference Result 1304 states and 2226 transitions. [2021-12-07 01:04:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:04:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) Word has length 255 [2021-12-07 01:04:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:37,076 INFO L225 Difference]: With dead ends: 1304 [2021-12-07 01:04:37,077 INFO L226 Difference]: Without dead ends: 996 [2021-12-07 01:04:37,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 442 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=50, Invalid=246, Unknown=14, NotChecked=32, Total=342 [2021-12-07 01:04:37,080 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 121 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 3607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2361 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:37,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1473 Invalid, 3607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1119 Invalid, 0 Unknown, 2361 Unchecked, 0.6s Time] [2021-12-07 01:04:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-12-07 01:04:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 897. [2021-12-07 01:04:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 533 states have (on average 1.1688555347091933) internal successors, (623), 546 states have internal predecessors, (623), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (598), 281 states have call predecessors, (598), 275 states have call successors, (598) [2021-12-07 01:04:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1499 transitions. [2021-12-07 01:04:37,159 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1499 transitions. Word has length 255 [2021-12-07 01:04:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:37,159 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1499 transitions. [2021-12-07 01:04:37,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-07 01:04:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1499 transitions. [2021-12-07 01:04:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-07 01:04:37,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:37,163 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:37,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 01:04:37,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 01:04:37,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1637353821, now seen corresponding path program 1 times [2021-12-07 01:04:37,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:37,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368266173] [2021-12-07 01:04:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:37,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:37,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:37,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579561802] [2021-12-07 01:04:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:37,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:37,405 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:37,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 01:04:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:37,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:04:37,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-12-07 01:04:38,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:04:38,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368266173] [2021-12-07 01:04:38,023 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579561802] [2021-12-07 01:04:38,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579561802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:38,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:04:38,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073223778] [2021-12-07 01:04:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:38,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:04:38,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:04:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:04:38,025 INFO L87 Difference]: Start difference. First operand 897 states and 1499 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:04:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:38,246 INFO L93 Difference]: Finished difference Result 1661 states and 2886 transitions. [2021-12-07 01:04:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:04:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2021-12-07 01:04:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:38,251 INFO L225 Difference]: With dead ends: 1661 [2021-12-07 01:04:38,251 INFO L226 Difference]: Without dead ends: 881 [2021-12-07 01:04:38,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:04:38,256 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 13 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:38,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1386 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:04:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-07 01:04:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2021-12-07 01:04:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 522 states have (on average 1.1647509578544062) internal successors, (608), 534 states have internal predecessors, (608), 274 states have call successors, (274), 69 states have call predecessors, (274), 83 states have return successors, (536), 276 states have call predecessors, (536), 271 states have call successors, (536) [2021-12-07 01:04:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1418 transitions. [2021-12-07 01:04:38,301 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1418 transitions. Word has length 255 [2021-12-07 01:04:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:38,302 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1418 transitions. [2021-12-07 01:04:38,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:04:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1418 transitions. [2021-12-07 01:04:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-07 01:04:38,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:38,305 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-12-07 01:04:38,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-07 01:04:38,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:04:38,507 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash 307318545, now seen corresponding path program 1 times [2021-12-07 01:04:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:38,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763549064] [2021-12-07 01:04:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:38,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:38,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:38,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271778330] [2021-12-07 01:04:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:38,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:38,581 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:38,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 01:04:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:38,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 3389 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-07 01:04:38,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-07 01:04:39,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:04:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-12-07 01:04:40,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763549064] [2021-12-07 01:04:40,002 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271778330] [2021-12-07 01:04:40,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271778330] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:04:40,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:04:40,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 29 [2021-12-07 01:04:40,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394731634] [2021-12-07 01:04:40,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:04:40,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-07 01:04:40,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-07 01:04:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=751, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:04:40,004 INFO L87 Difference]: Start difference. First operand 880 states and 1418 transitions. Second operand has 29 states, 25 states have (on average 5.72) internal successors, (143), 20 states have internal predecessors, (143), 7 states have call successors, (50), 3 states have call predecessors, (50), 9 states have return successors, (53), 11 states have call predecessors, (53), 6 states have call successors, (53) [2021-12-07 01:04:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:40,733 INFO L93 Difference]: Finished difference Result 1591 states and 2594 transitions. [2021-12-07 01:04:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:04:40,734 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 5.72) internal successors, (143), 20 states have internal predecessors, (143), 7 states have call successors, (50), 3 states have call predecessors, (50), 9 states have return successors, (53), 11 states have call predecessors, (53), 6 states have call successors, (53) Word has length 284 [2021-12-07 01:04:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:40,739 INFO L225 Difference]: With dead ends: 1591 [2021-12-07 01:04:40,739 INFO L226 Difference]: Without dead ends: 885 [2021-12-07 01:04:40,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 01:04:40,743 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 36 mSDsluCounter, 9096 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 9467 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:40,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 9467 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:04:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-07 01:04:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 880. [2021-12-07 01:04:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 522 states have (on average 1.1647509578544062) internal successors, (608), 534 states have internal predecessors, (608), 274 states have call successors, (274), 69 states have call predecessors, (274), 83 states have return successors, (527), 276 states have call predecessors, (527), 271 states have call successors, (527) [2021-12-07 01:04:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1409 transitions. [2021-12-07 01:04:40,786 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1409 transitions. Word has length 284 [2021-12-07 01:04:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1409 transitions. [2021-12-07 01:04:40,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 5.72) internal successors, (143), 20 states have internal predecessors, (143), 7 states have call successors, (50), 3 states have call predecessors, (50), 9 states have return successors, (53), 11 states have call predecessors, (53), 6 states have call successors, (53) [2021-12-07 01:04:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1409 transitions. [2021-12-07 01:04:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-07 01:04:40,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:40,789 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:40,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-07 01:04:40,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:40,990 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:40,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1844390939, now seen corresponding path program 1 times [2021-12-07 01:04:40,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:40,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93228914] [2021-12-07 01:04:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:40,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:41,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:41,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175648306] [2021-12-07 01:04:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:41,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:41,067 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:41,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 01:04:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:41,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 3377 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-07 01:04:41,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:41,551 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 [2021-12-07 01:04:41,639 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 01:04:41,639 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 20 [2021-12-07 01:04:43,719 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3223 Int)) (= |c_#memory_$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_3223)))) is different from true [2021-12-07 01:04:59,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:04:59,216 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 31 treesize of output 19 [2021-12-07 01:05:40,042 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3225 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3225)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:06:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 331 proven. 16 refuted. 2 times theorem prover too weak. 205 trivial. 3 not checked. [2021-12-07 01:06:14,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:06:16,160 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_315| Int) (v_ArrVal_3232 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_315| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_315|) 0 v_ArrVal_3232)) |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.offset| 32)) 0))) is different from false [2021-12-07 01:06:16,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:06:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93228914] [2021-12-07 01:06:16,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:06:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175648306] [2021-12-07 01:06:16,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175648306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:06:16,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:06:16,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-12-07 01:06:16,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404697064] [2021-12-07 01:06:16,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:06:16,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-07 01:06:16,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:06:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-07 01:06:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=663, Unknown=27, NotChecked=162, Total=930 [2021-12-07 01:06:16,163 INFO L87 Difference]: Start difference. First operand 880 states and 1409 transitions. Second operand has 30 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 12 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) [2021-12-07 01:06:37,696 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3225 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3225)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3223 Int)) (= |c_#memory_$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_3223))))) is different from true [2021-12-07 01:07:01,697 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 38 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:07:11,812 WARN L227 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 38 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:07:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:15,170 INFO L93 Difference]: Finished difference Result 1267 states and 2037 transitions. [2021-12-07 01:07:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:07:15,171 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 12 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) Word has length 266 [2021-12-07 01:07:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:15,176 INFO L225 Difference]: With dead ends: 1267 [2021-12-07 01:07:15,176 INFO L226 Difference]: Without dead ends: 986 [2021-12-07 01:07:15,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 371 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 151.6s TimeCoverageRelationStatistics Valid=183, Invalid=1590, Unknown=49, NotChecked=340, Total=2162 [2021-12-07 01:07:15,179 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 271 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 7104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4170 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:15,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 3974 Invalid, 7104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2655 Invalid, 0 Unknown, 4170 Unchecked, 1.3s Time] [2021-12-07 01:07:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-12-07 01:07:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 879. [2021-12-07 01:07:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 522 states have (on average 1.1647509578544062) internal successors, (608), 533 states have internal predecessors, (608), 273 states have call successors, (273), 70 states have call predecessors, (273), 83 states have return successors, (522), 275 states have call predecessors, (522), 270 states have call successors, (522) [2021-12-07 01:07:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1403 transitions. [2021-12-07 01:07:15,227 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1403 transitions. Word has length 266 [2021-12-07 01:07:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:15,227 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1403 transitions. [2021-12-07 01:07:15,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 12 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35) [2021-12-07 01:07:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1403 transitions. [2021-12-07 01:07:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-07 01:07:15,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:15,230 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 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] [2021-12-07 01:07:15,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-07 01:07:15,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:15,431 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash -723275604, now seen corresponding path program 1 times [2021-12-07 01:07:15,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:15,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667590017] [2021-12-07 01:07:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:15,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:15,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:15,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991035220] [2021-12-07 01:07:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:15,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:15,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:15,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 01:07:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:15,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-07 01:07:15,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-12-07 01:07:16,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:07:16,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667590017] [2021-12-07 01:07:16,150 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991035220] [2021-12-07 01:07:16,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991035220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:16,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:16,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 01:07:16,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81579526] [2021-12-07 01:07:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:16,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:07:16,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:07:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:07:16,152 INFO L87 Difference]: Start difference. First operand 879 states and 1403 transitions. Second operand has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-07 01:07:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:16,429 INFO L93 Difference]: Finished difference Result 1633 states and 2651 transitions. [2021-12-07 01:07:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:07:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 279 [2021-12-07 01:07:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:16,434 INFO L225 Difference]: With dead ends: 1633 [2021-12-07 01:07:16,434 INFO L226 Difference]: Without dead ends: 861 [2021-12-07 01:07:16,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:07:16,438 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 12 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:16,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4366 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:07:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-12-07 01:07:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 854. [2021-12-07 01:07:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 507 states have (on average 1.165680473372781) internal successors, (591), 518 states have internal predecessors, (591), 265 states have call successors, (265), 70 states have call predecessors, (265), 81 states have return successors, (420), 265 states have call predecessors, (420), 262 states have call successors, (420) [2021-12-07 01:07:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1276 transitions. [2021-12-07 01:07:16,480 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1276 transitions. Word has length 279 [2021-12-07 01:07:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:16,481 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1276 transitions. [2021-12-07 01:07:16,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.846153846153846) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-07 01:07:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1276 transitions. [2021-12-07 01:07:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-12-07 01:07:16,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:16,483 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:16,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 01:07:16,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:16,684 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1719608781, now seen corresponding path program 1 times [2021-12-07 01:07:16,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:16,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040787785] [2021-12-07 01:07:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:16,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:16,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:16,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574736527] [2021-12-07 01:07:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:16,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:16,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:16,767 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:16,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 01:07:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 3370 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-07 01:07:17,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:17,212 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 [2021-12-07 01:07:22,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:07:22,937 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 21 treesize of output 20 [2021-12-07 01:07:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:07:22,942 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 21 treesize of output 20 [2021-12-07 01:07:23,003 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3647 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3647) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3646 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3646)))) is different from true [2021-12-07 01:07:23,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:07:23,101 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 16 treesize of output 18 [2021-12-07 01:07:23,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:07:23,105 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 16 treesize of output 18 [2021-12-07 01:07:23,110 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:07:23,110 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 [2021-12-07 01:07:23,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:07:23,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:07:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 279 proven. 20 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-12-07 01:07:23,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:23,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040787785] [2021-12-07 01:07:23,888 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574736527] [2021-12-07 01:07:23,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574736527] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:07:23,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:07:23,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-07 01:07:23,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245513435] [2021-12-07 01:07:23,889 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:23,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:07:23,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:07:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=4, NotChecked=28, Total=272 [2021-12-07 01:07:23,890 INFO L87 Difference]: Start difference. First operand 854 states and 1276 transitions. Second operand has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-07 01:07:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:28,455 INFO L93 Difference]: Finished difference Result 971 states and 1421 transitions. [2021-12-07 01:07:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:07:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 262 [2021-12-07 01:07:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:28,459 INFO L225 Difference]: With dead ends: 971 [2021-12-07 01:07:28,459 INFO L226 Difference]: Without dead ends: 613 [2021-12-07 01:07:28,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 451 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=67, Invalid=310, Unknown=7, NotChecked=36, Total=420 [2021-12-07 01:07:28,461 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 130 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1653 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:28,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1703 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1209 Invalid, 0 Unknown, 1653 Unchecked, 0.7s Time] [2021-12-07 01:07:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-12-07 01:07:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 567. [2021-12-07 01:07:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 337 states have (on average 1.1661721068249258) internal successors, (393), 344 states have internal predecessors, (393), 176 states have call successors, (176), 45 states have call predecessors, (176), 53 states have return successors, (291), 177 states have call predecessors, (291), 174 states have call successors, (291) [2021-12-07 01:07:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 860 transitions. [2021-12-07 01:07:28,490 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 860 transitions. Word has length 262 [2021-12-07 01:07:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:28,490 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 860 transitions. [2021-12-07 01:07:28,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-07 01:07:28,490 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 860 transitions. [2021-12-07 01:07:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-07 01:07:28,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:28,492 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1] [2021-12-07 01:07:28,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-07 01:07:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:28,693 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash 165463492, now seen corresponding path program 1 times [2021-12-07 01:07:28,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:28,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091793410] [2021-12-07 01:07:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:28,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:28,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:28,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126321192] [2021-12-07 01:07:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:28,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:28,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:28,777 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:28,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 01:07:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:29,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 197 conjunts are in the unsatisfiable core [2021-12-07 01:07:29,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:29,257 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 [2021-12-07 01:07:29,405 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 [2021-12-07 01:07:29,444 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 [2021-12-07 01:07:33,550 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 01:07:33,550 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 [2021-12-07 01:07:33,558 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 [2021-12-07 01:07:33,617 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-12-07 01:07:33,617 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 [2021-12-07 01:07:33,784 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3890 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3890))) (exists ((v_ArrVal_3891 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3891))) (< 0 |c_#StackHeapBarrier|)) is different from true [2021-12-07 01:07:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:07:42,216 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 27 treesize of output 27 [2021-12-07 01:07:42,220 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 [2021-12-07 01:07:42,227 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:07:42,228 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 [2021-12-07 01:09:08,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-07 01:09:10,060 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3894 Int)) (= |c_#memory_$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_3894)))) (exists ((v_ArrVal_3893 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3893))))) is different from true [2021-12-07 01:09:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:09:10,780 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:09:10,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-07 01:09:10,782 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:09:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 315 proven. 43 refuted. 0 times theorem prover too weak. 198 trivial. 3 not checked. [2021-12-07 01:09:10,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:09:11,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:11,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091793410] [2021-12-07 01:09:11,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:11,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126321192] [2021-12-07 01:09:11,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126321192] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:09:11,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:09:11,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-07 01:09:11,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173799652] [2021-12-07 01:09:11,091 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:09:11,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-07 01:09:11,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-07 01:09:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=975, Unknown=33, NotChecked=130, Total=1260 [2021-12-07 01:09:11,093 INFO L87 Difference]: Start difference. First operand 567 states and 860 transitions. Second operand has 35 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 13 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-07 01:09:25,134 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 33 DAG size of output: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:09:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:37,618 INFO L93 Difference]: Finished difference Result 938 states and 1418 transitions. [2021-12-07 01:09:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-07 01:09:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 13 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) Word has length 263 [2021-12-07 01:09:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:37,623 INFO L225 Difference]: With dead ends: 938 [2021-12-07 01:09:37,623 INFO L226 Difference]: Without dead ends: 655 [2021-12-07 01:09:37,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 326 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 126.2s TimeCoverageRelationStatistics Valid=217, Invalid=1891, Unknown=62, NotChecked=182, Total=2352 [2021-12-07 01:09:37,625 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 195 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4076 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:37,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 2796 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1494 Invalid, 0 Unknown, 4076 Unchecked, 0.9s Time] [2021-12-07 01:09:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-12-07 01:09:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2021-12-07 01:09:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 383 states have (on average 1.154046997389034) internal successors, (442), 391 states have internal predecessors, (442), 188 states have call successors, (188), 55 states have call predecessors, (188), 64 states have return successors, (305), 189 states have call predecessors, (305), 186 states have call successors, (305) [2021-12-07 01:09:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 935 transitions. [2021-12-07 01:09:37,655 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 935 transitions. Word has length 263 [2021-12-07 01:09:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:37,656 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 935 transitions. [2021-12-07 01:09:37,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 13 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-07 01:09:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 935 transitions. [2021-12-07 01:09:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-07 01:09:37,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:37,658 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:09:37,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 01:09:37,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:37,858 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 675973744, now seen corresponding path program 2 times [2021-12-07 01:09:37,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:37,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119893099] [2021-12-07 01:09:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:37,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:37,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099937730] [2021-12-07 01:09:37,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:09:37,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:37,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:37,901 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:37,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 01:09:38,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:09:38,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:09:38,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 3377 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-07 01:09:38,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 286 proven. 6 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-12-07 01:09:39,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:09:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 60 proven. 28 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-07 01:09:39,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:39,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119893099] [2021-12-07 01:09:39,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:39,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099937730] [2021-12-07 01:09:39,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099937730] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:09:39,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:09:39,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 27 [2021-12-07 01:09:39,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899145319] [2021-12-07 01:09:39,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:09:39,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:09:39,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:09:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:09:39,982 INFO L87 Difference]: Start difference. First operand 636 states and 935 transitions. Second operand has 27 states, 23 states have (on average 5.956521739130435) internal successors, (137), 18 states have internal predecessors, (137), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) [2021-12-07 01:09:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:40,539 INFO L93 Difference]: Finished difference Result 1091 states and 1639 transitions. [2021-12-07 01:09:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:09:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.956521739130435) internal successors, (137), 18 states have internal predecessors, (137), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) Word has length 275 [2021-12-07 01:09:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:40,543 INFO L225 Difference]: With dead ends: 1091 [2021-12-07 01:09:40,544 INFO L226 Difference]: Without dead ends: 638 [2021-12-07 01:09:40,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:09:40,546 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 42 mSDsluCounter, 8238 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8604 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:40,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 8604 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:09:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-07 01:09:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2021-12-07 01:09:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 383 states have (on average 1.154046997389034) internal successors, (442), 391 states have internal predecessors, (442), 188 states have call successors, (188), 55 states have call predecessors, (188), 64 states have return successors, (303), 189 states have call predecessors, (303), 186 states have call successors, (303) [2021-12-07 01:09:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 933 transitions. [2021-12-07 01:09:40,574 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 933 transitions. Word has length 275 [2021-12-07 01:09:40,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:40,575 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 933 transitions. [2021-12-07 01:09:40,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.956521739130435) internal successors, (137), 18 states have internal predecessors, (137), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (49), 11 states have call predecessors, (49), 6 states have call successors, (49) [2021-12-07 01:09:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 933 transitions. [2021-12-07 01:09:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-07 01:09:40,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:40,577 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2021-12-07 01:09:40,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-07 01:09:40,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-07 01:09:40,778 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash -842494716, now seen corresponding path program 2 times [2021-12-07 01:09:40,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:40,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879685211] [2021-12-07 01:09:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:40,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:40,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:40,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246922742] [2021-12-07 01:09:40,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:09:40,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:40,857 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:40,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 01:09:41,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:09:41,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:09:41,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-07 01:09:41,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:44,116 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4318 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4317 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4318))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4317)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-07 01:10:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:11,068 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 31 treesize of output 19 [2021-12-07 01:10:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 387 proven. 3 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-07 01:10:11,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:10:13,412 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_431| Int) (v_ArrVal_4332 Int) (v_ArrVal_4331 Int)) (let ((.cse0 (+ 32 |c_aws_array_list_set_at_~list#1.offset|))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_431| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_431|) 0 v_ArrVal_4331)) |c_aws_array_list_set_at_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_431| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_431|) 0 v_ArrVal_4332)) |c_aws_array_list_set_at_~list#1.base|) .cse0) 0))))) is different from false [2021-12-07 01:10:13,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:10:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879685211] [2021-12-07 01:10:13,414 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:10:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246922742] [2021-12-07 01:10:13,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246922742] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:10:13,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:10:13,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-12-07 01:10:13,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714545173] [2021-12-07 01:10:13,415 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:10:13,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 01:10:13,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:10:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:10:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=287, Unknown=11, NotChecked=70, Total=420 [2021-12-07 01:10:13,416 INFO L87 Difference]: Start difference. First operand 636 states and 933 transitions. Second operand has 20 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2021-12-07 01:10:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:10:39,422 INFO L93 Difference]: Finished difference Result 1166 states and 1790 transitions. [2021-12-07 01:10:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 01:10:39,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) Word has length 263 [2021-12-07 01:10:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:10:39,427 INFO L225 Difference]: With dead ends: 1166 [2021-12-07 01:10:39,427 INFO L226 Difference]: Without dead ends: 692 [2021-12-07 01:10:39,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=133, Invalid=664, Unknown=23, NotChecked=110, Total=930 [2021-12-07 01:10:39,429 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 158 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:10:39,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 2203 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2372 Invalid, 0 Unknown, 1153 Unchecked, 1.6s Time] [2021-12-07 01:10:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-12-07 01:10:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 659. [2021-12-07 01:10:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 396 states have (on average 1.148989898989899) internal successors, (455), 404 states have internal predecessors, (455), 197 states have call successors, (197), 59 states have call predecessors, (197), 65 states have return successors, (314), 195 states have call predecessors, (314), 195 states have call successors, (314) [2021-12-07 01:10:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 966 transitions. [2021-12-07 01:10:39,461 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 966 transitions. Word has length 263 [2021-12-07 01:10:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:10:39,461 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 966 transitions. [2021-12-07 01:10:39,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2021-12-07 01:10:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 966 transitions. [2021-12-07 01:10:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-07 01:10:39,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:10:39,464 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:10:39,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-07 01:10:39,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-07 01:10:39,665 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:10:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:10:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash -591126220, now seen corresponding path program 1 times [2021-12-07 01:10:39,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:10:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080737752] [2021-12-07 01:10:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:10:39,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:10:39,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:10:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298979605] [2021-12-07 01:10:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:10:39,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:10:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:10:39,744 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:10:39,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 01:10:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:10:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 3413 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-07 01:10:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:10:40,602 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-07 01:10:40,602 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 [2021-12-07 01:10:40,678 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-07 01:10:40,678 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 19 treesize of output 25 [2021-12-07 01:10:40,683 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 10 treesize of output 6 [2021-12-07 01:10:40,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:40,694 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 33 treesize of output 32 [2021-12-07 01:10:40,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:40,699 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 33 treesize of output 32 [2021-12-07 01:10:41,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:41,180 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 33 treesize of output 32 [2021-12-07 01:10:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:41,185 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 33 treesize of output 32 [2021-12-07 01:10:41,199 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-07 01:10:41,199 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 29 [2021-12-07 01:10:41,457 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4584 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4584)))) (exists ((v_ArrVal_4583 Int)) (= |c_#memory_$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_4583)))) (exists ((v_ArrVal_4585 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4585)))) is different from true [2021-12-07 01:10:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:10:56,159 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 31 treesize of output 19 [2021-12-07 01:10:56,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:10:56,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:10:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 379 proven. 21 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-07 01:10:56,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:10:56,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:10:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080737752] [2021-12-07 01:10:56,906 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:10:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298979605] [2021-12-07 01:10:56,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298979605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:10:56,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:10:56,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-07 01:10:56,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786393742] [2021-12-07 01:10:56,906 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:10:56,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 01:10:56,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:10:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 01:10:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=468, Unknown=11, NotChecked=44, Total=600 [2021-12-07 01:10:56,908 INFO L87 Difference]: Start difference. First operand 659 states and 966 transitions. Second operand has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2021-12-07 01:11:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:11:07,433 INFO L93 Difference]: Finished difference Result 1013 states and 1509 transitions. [2021-12-07 01:11:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:11:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) Word has length 274 [2021-12-07 01:11:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:11:07,437 INFO L225 Difference]: With dead ends: 1013 [2021-12-07 01:11:07,437 INFO L226 Difference]: Without dead ends: 727 [2021-12-07 01:11:07,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 394 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=132, Invalid=849, Unknown=15, NotChecked=60, Total=1056 [2021-12-07 01:11:07,439 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 180 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2212 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:11:07,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 2512 Invalid, 4508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2050 Invalid, 0 Unknown, 2212 Unchecked, 2.1s Time] [2021-12-07 01:11:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-12-07 01:11:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 691. [2021-12-07 01:11:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 418 states have (on average 1.1411483253588517) internal successors, (477), 426 states have internal predecessors, (477), 200 states have call successors, (200), 66 states have call predecessors, (200), 72 states have return successors, (316), 198 states have call predecessors, (316), 198 states have call successors, (316) [2021-12-07 01:11:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 993 transitions. [2021-12-07 01:11:07,471 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 993 transitions. Word has length 274 [2021-12-07 01:11:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:11:07,471 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 993 transitions. [2021-12-07 01:11:07,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 10 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2021-12-07 01:11:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 993 transitions. [2021-12-07 01:11:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-07 01:11:07,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:11:07,473 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 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, 1, 1, 1] [2021-12-07 01:11:07,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-07 01:11:07,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:11:07,675 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:11:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:11:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1540211200, now seen corresponding path program 1 times [2021-12-07 01:11:07,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:11:07,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574653455] [2021-12-07 01:11:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:11:07,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:11:07,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:11:07,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034390941] [2021-12-07 01:11:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:11:07,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:11:07,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:11:07,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:11:07,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-07 01:11:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:11:08,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 178 conjunts are in the unsatisfiable core [2021-12-07 01:11:08,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:11:08,254 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 [2021-12-07 01:11:08,338 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 [2021-12-07 01:11:08,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2021-12-07 01:11:08,475 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 01:11:08,476 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 34 treesize of output 27 [2021-12-07 01:11:08,517 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-07 01:11:08,518 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 1 case distinctions, treesize of input 18 treesize of output 20 [2021-12-07 01:11:08,603 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4820 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4820))) is different from true [2021-12-07 01:11:08,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:11:08,673 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 28 treesize of output 28 [2021-12-07 01:11:08,683 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-12-07 01:11:08,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2021-12-07 01:11:51,400 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4822 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4822)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:12:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:12:06,135 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 [2021-12-07 01:12:09,301 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4824 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4825 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4825)) (= |c_#memory_$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_4824))))) is different from true [2021-12-07 01:12:13,580 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616) 0)) (exists ((v_ArrVal_4824 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4825 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4824)) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4825))))) is different from true [2021-12-07 01:12:13,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:12:13,676 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 41 treesize of output 31 [2021-12-07 01:12:13,680 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 20 treesize of output 19 [2021-12-07 01:12:13,681 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 10 treesize of output 6 [2021-12-07 01:12:36,037 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4826 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4826)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:12:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:12:52,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:12:52,824 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 01:12:52,824 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 18 treesize of output 1 [2021-12-07 01:12:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 305 proven. 106 refuted. 1 times theorem prover too weak. 118 trivial. 37 not checked. [2021-12-07 01:12:52,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:12:54,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4834 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_477| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_477| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_477|) 0 v_ArrVal_4834)) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) (+ |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.offset| 32)) 0))) is different from false [2021-12-07 01:12:54,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:12:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574653455] [2021-12-07 01:12:54,526 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:12:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034390941] [2021-12-07 01:12:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034390941] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:12:54,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:12:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-12-07 01:12:54,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309061955] [2021-12-07 01:12:54,526 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:12:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-07 01:12:54,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:12:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-07 01:12:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1386, Unknown=58, NotChecked=486, Total=2070 [2021-12-07 01:12:54,528 INFO L87 Difference]: Start difference. First operand 691 states and 993 transitions. Second operand has 45 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 18 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) [2021-12-07 01:13:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:13:25,509 INFO L93 Difference]: Finished difference Result 1020 states and 1484 transitions. [2021-12-07 01:13:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-07 01:13:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 18 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) Word has length 271 [2021-12-07 01:13:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:13:25,514 INFO L225 Difference]: With dead ends: 1020 [2021-12-07 01:13:25,514 INFO L226 Difference]: Without dead ends: 759 [2021-12-07 01:13:25,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 293 SyntacticMatches, 19 SemanticMatches, 64 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 133.9s TimeCoverageRelationStatistics Valid=294, Invalid=3183, Unknown=87, NotChecked=726, Total=4290 [2021-12-07 01:13:25,516 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 258 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 9743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5881 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:13:25,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 3529 Invalid, 9743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3580 Invalid, 0 Unknown, 5881 Unchecked, 2.1s Time] [2021-12-07 01:13:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-12-07 01:13:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 713. [2021-12-07 01:13:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 431 states have (on average 1.136890951276102) internal successors, (490), 439 states have internal predecessors, (490), 207 states have call successors, (207), 69 states have call predecessors, (207), 74 states have return successors, (325), 204 states have call predecessors, (325), 205 states have call successors, (325) [2021-12-07 01:13:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1022 transitions. [2021-12-07 01:13:25,549 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1022 transitions. Word has length 271 [2021-12-07 01:13:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:13:25,550 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1022 transitions. [2021-12-07 01:13:25,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 18 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) [2021-12-07 01:13:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1022 transitions. [2021-12-07 01:13:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-07 01:13:25,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:13:25,552 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:13:25,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-07 01:13:25,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:13:25,753 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:13:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:13:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -353226508, now seen corresponding path program 1 times [2021-12-07 01:13:25,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:13:25,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112223008] [2021-12-07 01:13:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:13:25,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:13:25,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:13:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187386158] [2021-12-07 01:13:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:13:25,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:13:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:13:25,832 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:13:25,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 01:13:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:13:26,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 01:13:26,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:13:26,632 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 17 treesize of output 9 [2021-12-07 01:13:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-12-07 01:13:26,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:13:26,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:13:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112223008] [2021-12-07 01:13:26,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:13:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187386158] [2021-12-07 01:13:26,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187386158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:13:26,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:13:26,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 01:13:26,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468109538] [2021-12-07 01:13:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:13:26,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:13:26,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:13:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:13:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:13:26,753 INFO L87 Difference]: Start difference. First operand 713 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-07 01:13:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:13:27,364 INFO L93 Difference]: Finished difference Result 1009 states and 1480 transitions. [2021-12-07 01:13:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:13:27,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 278 [2021-12-07 01:13:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:13:27,369 INFO L225 Difference]: With dead ends: 1009 [2021-12-07 01:13:27,369 INFO L226 Difference]: Without dead ends: 712 [2021-12-07 01:13:27,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:13:27,371 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 86 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:13:27,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 2567 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 496 Invalid, 0 Unknown, 120 Unchecked, 0.5s Time] [2021-12-07 01:13:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-07 01:13:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 700. [2021-12-07 01:13:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 424 states have (on average 1.134433962264151) internal successors, (481), 431 states have internal predecessors, (481), 201 states have call successors, (201), 68 states have call predecessors, (201), 74 states have return successors, (316), 200 states have call predecessors, (316), 199 states have call successors, (316) [2021-12-07 01:13:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 998 transitions. [2021-12-07 01:13:27,420 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 998 transitions. Word has length 278 [2021-12-07 01:13:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:13:27,420 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 998 transitions. [2021-12-07 01:13:27,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-07 01:13:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 998 transitions. [2021-12-07 01:13:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-07 01:13:27,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:13:27,424 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:13:27,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-07 01:13:27,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:13:27,625 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:13:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:13:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1616996075, now seen corresponding path program 1 times [2021-12-07 01:13:27,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:13:27,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728240402] [2021-12-07 01:13:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:13:27,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:13:27,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:13:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953490808] [2021-12-07 01:13:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:13:27,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:13:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:13:27,727 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:13:27,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-07 01:13:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:13:28,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3382 conjuncts, 145 conjunts are in the unsatisfiable core [2021-12-07 01:13:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:13:28,258 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 [2021-12-07 01:13:28,421 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 01:13:28,421 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 20 [2021-12-07 01:13:30,527 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5300 Int)) (= |c_#memory_$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_5300)))) is different from true [2021-12-07 01:13:43,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:13:43,410 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 31 treesize of output 19 [2021-12-07 01:13:48,562 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5302 (Array Int Int)) (v_ArrVal_5303 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5302)) (= |c_#memory_$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_5303))))) is different from true [2021-12-07 01:13:50,867 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616) 0)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5302 (Array Int Int)) (v_ArrVal_5303 Int)) (and (= |c_#memory_$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|) 0 v_ArrVal_5303))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5302))))) is different from true [2021-12-07 01:13:50,980 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 43 treesize of output 31 [2021-12-07 01:13:50,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:13:50,987 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 [2021-12-07 01:13:50,989 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 10 treesize of output 6 [2021-12-07 01:14:25,726 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5305 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5305)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-07 01:15:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:15:00,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:15:00,837 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 01:15:00,837 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 18 treesize of output 1 [2021-12-07 01:15:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 350 proven. 62 refuted. 4 times theorem prover too weak. 122 trivial. 21 not checked. [2021-12-07 01:15:00,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:15:02,594 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_501| Int) (v_ArrVal_5312 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_501| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_501|) 0 v_ArrVal_5312)) |c_aws_array_list_set_at_~list#1.base|) (+ 32 |c_aws_array_list_set_at_~list#1.offset|)) 0))) is different from false [2021-12-07 01:15:02,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:15:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728240402] [2021-12-07 01:15:02,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:15:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953490808] [2021-12-07 01:15:02,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953490808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:15:02,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:15:02,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-12-07 01:15:02,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060772368] [2021-12-07 01:15:02,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:15:02,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-07 01:15:02,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:15:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-07 01:15:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1302, Unknown=75, NotChecked=390, Total=1892 [2021-12-07 01:15:02,599 INFO L87 Difference]: Start difference. First operand 700 states and 998 transitions. Second operand has 43 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 35 states have internal predecessors, (128), 16 states have call successors, (39), 9 states have call predecessors, (39), 13 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2021-12-07 01:15:10,920 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5300 Int)) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5300)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5305 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5305)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5302 (Array Int Int)) (v_ArrVal_5303 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5302)) (= |c_#memory_$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_5303)))))) is different from true [2021-12-07 01:15:33,014 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 46 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:15:42,867 WARN L227 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 46 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:15:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:15:50,276 INFO L93 Difference]: Finished difference Result 1007 states and 1460 transitions. [2021-12-07 01:15:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-07 01:15:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 35 states have internal predecessors, (128), 16 states have call successors, (39), 9 states have call predecessors, (39), 13 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) Word has length 268 [2021-12-07 01:15:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:15:50,280 INFO L225 Difference]: With dead ends: 1007 [2021-12-07 01:15:50,280 INFO L226 Difference]: Without dead ends: 740 [2021-12-07 01:15:50,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 324 SyntacticMatches, 13 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 138.9s TimeCoverageRelationStatistics Valid=261, Invalid=2846, Unknown=109, NotChecked=690, Total=3906 [2021-12-07 01:15:50,283 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 290 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 9195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5978 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:15:50,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 4533 Invalid, 9195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2965 Invalid, 0 Unknown, 5978 Unchecked, 1.7s Time] [2021-12-07 01:15:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-12-07 01:15:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 704. [2021-12-07 01:15:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 427 states have (on average 1.1334894613583137) internal successors, (484), 434 states have internal predecessors, (484), 201 states have call successors, (201), 69 states have call predecessors, (201), 75 states have return successors, (315), 200 states have call predecessors, (315), 199 states have call successors, (315) [2021-12-07 01:15:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1000 transitions. [2021-12-07 01:15:50,317 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1000 transitions. Word has length 268 [2021-12-07 01:15:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:15:50,317 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1000 transitions. [2021-12-07 01:15:50,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 35 states have internal predecessors, (128), 16 states have call successors, (39), 9 states have call predecessors, (39), 13 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2021-12-07 01:15:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1000 transitions. [2021-12-07 01:15:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-07 01:15:50,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:15:50,319 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 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, 1] [2021-12-07 01:15:50,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-07 01:15:50,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 01:15:50,520 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:15:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1400327488, now seen corresponding path program 3 times [2021-12-07 01:15:50,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516152308] [2021-12-07 01:15:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:50,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:50,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:15:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114537112] [2021-12-07 01:15:50,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:15:50,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:15:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:50,570 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:15:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d50af3-5a3e-4b2b-8cf3-e6d103a0c5dd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-07 01:15:51,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 01:15:51,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:15:51,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-07 01:15:51,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:54,273 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5519 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5521 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5521)) |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5519)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-07 01:16:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 363 proven. 3 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-07 01:16:22,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:16:24,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5536 Int) (v_ArrVal_5535 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| Int)) (let ((.cse0 (+ |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519|) 0 v_ArrVal_5535)) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_519|) 0 v_ArrVal_5536)) |c_aws_array_list_set_at_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0))))) is different from false [2021-12-07 01:16:24,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:24,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516152308] [2021-12-07 01:16:24,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:16:24,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114537112] [2021-12-07 01:16:24,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114537112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:16:24,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:16:24,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-07 01:16:24,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620878375] [2021-12-07 01:16:24,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:16:24,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-07 01:16:24,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-07 01:16:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=324, Unknown=11, NotChecked=74, Total=462 [2021-12-07 01:16:24,336 INFO L87 Difference]: Start difference. First operand 704 states and 1000 transitions. Second operand has 21 states, 18 states have (on average 6.388888888888889) internal successors, (115), 19 states have internal predecessors, (115), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (35), 7 states have call predecessors, (35), 9 states have call successors, (35)