./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:33:45,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:45,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:45,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:45,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:45,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:45,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:45,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:45,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:45,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:45,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:45,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:45,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:45,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:45,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:45,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:45,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:45,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:45,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:45,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:45,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:45,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:45,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:45,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:45,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:45,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:45,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:45,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:45,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:45,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:45,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:45,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:45,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:45,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:45,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:45,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:45,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:45,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:45,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:45,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:45,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:45,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:33:45,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:45,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:45,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:45,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:45,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:45,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:45,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:45,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:45,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:45,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:45,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:45,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:45,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:33:45,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:45,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:33:45,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:33:45,785 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:45,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:33:45,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:45,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:45,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:45,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:45,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:45,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:45,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:33:45,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:33:45,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:33:45,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:33:45,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:33:45,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:33:45,789 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_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2022-11-16 11:33:46,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:46,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:46,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:46,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:46,177 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:46,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2022-11-16 11:33:46,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/data/4acb3c26b/499e149205f64454a59bf96615aa62f9/FLAG89ac6fb00 [2022-11-16 11:33:47,127 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:47,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2022-11-16 11:33:47,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/data/4acb3c26b/499e149205f64454a59bf96615aa62f9/FLAG89ac6fb00 [2022-11-16 11:33:47,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/data/4acb3c26b/499e149205f64454a59bf96615aa62f9 [2022-11-16 11:33:47,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:47,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:47,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:47,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:47,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:47,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:47" (1/1) ... [2022-11-16 11:33:47,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30175e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:47, skipping insertion in model container [2022-11-16 11:33:47,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:47" (1/1) ... [2022-11-16 11:33:47,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:47,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:47,702 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2022-11-16 11:33:47,711 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2022-11-16 11:33:48,769 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,775 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,776 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,777 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,778 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,793 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,805 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,808 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:48,812 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:33:49,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:33:49,282 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:33:49,284 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:33:49,286 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:33:49,287 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:33:49,288 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:33:49,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:33:49,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:33:49,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:33:49,458 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:33:49,596 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,597 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:49,834 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:33:49,888 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2022-11-16 11:33:49,889 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2022-11-16 11:33:49,949 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,951 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,952 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,953 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,954 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,975 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,976 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,978 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:49,978 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:50,029 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:33:50,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:33:50,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:33:50,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:33:50,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:33:50,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:33:50,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:33:50,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:33:50,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:33:50,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:33:50,068 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:33:50,149 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:50,150 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:50,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:50,407 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:33:50,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50 WrapperNode [2022-11-16 11:33:50,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:50,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:50,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:33:50,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:33:50,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,591 INFO L138 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 902 [2022-11-16 11:33:50,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:50,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:33:50,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:33:50,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:33:50,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:33:50,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:33:50,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:33:50,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:33:50,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (1/1) ... [2022-11-16 11:33:50,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:50,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:33:50,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:33:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-16 11:33:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-16 11:33:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:33:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:33:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:33:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:33:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:33:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:33:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:33:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:33:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-16 11:33:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-16 11:33:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:33:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 11:33:50,789 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 11:33:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-16 11:33:50,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-16 11:33:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:33:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:33:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:33:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:33:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 11:33:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 11:33:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:33:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:33:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 11:33:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 11:33:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:33:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:33:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-11-16 11:33:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-11-16 11:33:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:33:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:33:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:33:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 11:33:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 11:33:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-16 11:33:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-16 11:33:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:33:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-11-16 11:33:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-11-16 11:33:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:33:51,199 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:33:51,201 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:33:52,657 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:33:52,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:33:52,674 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:33:52,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:52 BoogieIcfgContainer [2022-11-16 11:33:52,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:33:52,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:33:52,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:33:52,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:33:52,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:33:47" (1/3) ... [2022-11-16 11:33:52,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcbc5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:52, skipping insertion in model container [2022-11-16 11:33:52,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50" (2/3) ... [2022-11-16 11:33:52,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcbc5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:52, skipping insertion in model container [2022-11-16 11:33:52,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:52" (3/3) ... [2022-11-16 11:33:52,690 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2022-11-16 11:33:52,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:33:52,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:33:52,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:52,791 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@370dbb77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:52,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:33:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-16 11:33:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:33:52,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:52,822 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:52,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -170695640, now seen corresponding path program 1 times [2022-11-16 11:33:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:52,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95951809] [2022-11-16 11:33:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:33:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:33:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:33:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:33:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:33:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:33:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:33:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:33:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:33:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:33:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:33:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:33:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:33:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:33:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:33:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:33:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 11:33:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 11:33:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-16 11:33:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:54,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95951809] [2022-11-16 11:33:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95951809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:54,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:54,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:33:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556015134] [2022-11-16 11:33:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:54,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:54,184 INFO L87 Difference]: Start difference. First operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:33:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:55,004 INFO L93 Difference]: Finished difference Result 358 states and 516 transitions. [2022-11-16 11:33:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 156 [2022-11-16 11:33:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:55,025 INFO L225 Difference]: With dead ends: 358 [2022-11-16 11:33:55,025 INFO L226 Difference]: Without dead ends: 182 [2022-11-16 11:33:55,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:55,043 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 189 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:55,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 158 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:33:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-16 11:33:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2022-11-16 11:33:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 101 states have (on average 1.198019801980198) internal successors, (121), 103 states have internal predecessors, (121), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-16 11:33:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2022-11-16 11:33:55,110 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 156 [2022-11-16 11:33:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:55,110 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2022-11-16 11:33:55,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:33:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2022-11-16 11:33:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:33:55,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:55,115 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:33:55,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1949598816, now seen corresponding path program 1 times [2022-11-16 11:33:55,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:55,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62372357] [2022-11-16 11:33:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:33:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:33:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:33:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:33:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:33:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:33:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:33:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:33:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:33:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:33:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:33:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:33:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:33:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:33:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:33:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:33:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 11:33:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 11:33:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-16 11:33:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62372357] [2022-11-16 11:33:56,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62372357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930033694] [2022-11-16 11:33:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:56,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:56,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:56,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:33:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:57,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:33:57,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 11:33:57,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:57,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930033694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:57,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:33:57,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 11:33:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756594756] [2022-11-16 11:33:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:33:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:33:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:33:57,298 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 11:33:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:57,653 INFO L93 Difference]: Finished difference Result 336 states and 452 transitions. [2022-11-16 11:33:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:57,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 156 [2022-11-16 11:33:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:57,657 INFO L225 Difference]: With dead ends: 336 [2022-11-16 11:33:57,657 INFO L226 Difference]: Without dead ends: 173 [2022-11-16 11:33:57,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:33:57,660 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 244 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:57,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 507 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-16 11:33:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-16 11:33:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-11-16 11:33:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 235 transitions. [2022-11-16 11:33:57,692 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 235 transitions. Word has length 156 [2022-11-16 11:33:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:57,692 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 235 transitions. [2022-11-16 11:33:57,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 11:33:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 235 transitions. [2022-11-16 11:33:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 11:33:57,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:57,697 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:57,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:57,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:57,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -71903277, now seen corresponding path program 1 times [2022-11-16 11:33:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827439848] [2022-11-16 11:33:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:57,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:33:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:33:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:33:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:33:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:33:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:33:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:33:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:33:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:33:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:33:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:33:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:33:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:33:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:33:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:33:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:33:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 11:33:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:33:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:33:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-16 11:33:58,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:58,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827439848] [2022-11-16 11:33:58,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827439848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:58,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272431307] [2022-11-16 11:33:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:58,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:58,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:58,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:33:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:59,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:59,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-16 11:33:59,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:59,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272431307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:59,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:33:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-16 11:33:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102871887] [2022-11-16 11:33:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:59,451 INFO L87 Difference]: Start difference. First operand 173 states and 235 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:33:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:59,497 INFO L93 Difference]: Finished difference Result 349 states and 483 transitions. [2022-11-16 11:33:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2022-11-16 11:33:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:59,500 INFO L225 Difference]: With dead ends: 349 [2022-11-16 11:33:59,500 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 11:33:59,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:33:59,502 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 29 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:59,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 11:33:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2022-11-16 11:33:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-11-16 11:33:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 237 transitions. [2022-11-16 11:33:59,525 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 237 transitions. Word has length 162 [2022-11-16 11:33:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:59,526 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 237 transitions. [2022-11-16 11:33:59,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:33:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 237 transitions. [2022-11-16 11:33:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 11:33:59,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:59,529 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:59,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:59,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1018941163, now seen corresponding path program 1 times [2022-11-16 11:33:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:59,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448393471] [2022-11-16 11:33:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:59,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:34:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:34:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:34:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 11:34:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:34:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:34:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-16 11:34:00,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:00,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448393471] [2022-11-16 11:34:00,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448393471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:00,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248929512] [2022-11-16 11:34:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:00,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:00,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:00,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:01,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:34:01,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-16 11:34:01,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:01,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248929512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:01,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:01,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 11:34:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371357458] [2022-11-16 11:34:01,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:01,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:34:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:34:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:34:01,590 INFO L87 Difference]: Start difference. First operand 175 states and 237 transitions. 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:34:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:01,881 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2022-11-16 11:34:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:34:01,882 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2022-11-16 11:34:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:01,884 INFO L225 Difference]: With dead ends: 312 [2022-11-16 11:34:01,884 INFO L226 Difference]: Without dead ends: 175 [2022-11-16 11:34:01,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:34:01,886 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 242 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:01,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 511 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:34:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-16 11:34:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-16 11:34:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2022-11-16 11:34:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 235 transitions. [2022-11-16 11:34:01,915 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 235 transitions. Word has length 162 [2022-11-16 11:34:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:01,915 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 235 transitions. [2022-11-16 11:34:01,916 INFO L496 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, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:34:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 235 transitions. [2022-11-16 11:34:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-16 11:34:01,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:01,919 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:01,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:34:02,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:02,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:02,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1461274240, now seen corresponding path program 2 times [2022-11-16 11:34:02,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:02,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034946094] [2022-11-16 11:34:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:34:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 11:34:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:34:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-16 11:34:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 11:34:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:03,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034946094] [2022-11-16 11:34:03,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034946094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845429109] [2022-11-16 11:34:03,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:34:03,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:03,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:03,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:34:04,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:34:04,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:04,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:34:04,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 11:34:04,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845429109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:04,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:04,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-11-16 11:34:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413256138] [2022-11-16 11:34:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:04,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:34:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:34:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:34:04,847 INFO L87 Difference]: Start difference. First operand 175 states and 235 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-16 11:34:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:05,313 INFO L93 Difference]: Finished difference Result 298 states and 404 transitions. [2022-11-16 11:34:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:05,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 168 [2022-11-16 11:34:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:05,316 INFO L225 Difference]: With dead ends: 298 [2022-11-16 11:34:05,316 INFO L226 Difference]: Without dead ends: 175 [2022-11-16 11:34:05,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:34:05,318 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 267 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:05,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 929 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:34:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-16 11:34:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-16 11:34:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2022-11-16 11:34:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2022-11-16 11:34:05,336 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 168 [2022-11-16 11:34:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:05,337 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2022-11-16 11:34:05,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-16 11:34:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2022-11-16 11:34:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-16 11:34:05,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:05,340 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:05,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:05,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1858645887, now seen corresponding path program 3 times [2022-11-16 11:34:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:05,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557992839] [2022-11-16 11:34:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:34:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:34:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:34:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:34:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-16 11:34:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 11:34:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557992839] [2022-11-16 11:34:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557992839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138952173] [2022-11-16 11:34:06,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:34:06,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:06,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:06,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:34:07,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:34:07,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:07,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:34:07,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 11:34:07,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138952173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:07,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:07,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-16 11:34:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801595796] [2022-11-16 11:34:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:34:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:34:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:34:07,192 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 11:34:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:07,348 INFO L93 Difference]: Finished difference Result 187 states and 251 transitions. [2022-11-16 11:34:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:34:07,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 186 [2022-11-16 11:34:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:07,350 INFO L225 Difference]: With dead ends: 187 [2022-11-16 11:34:07,351 INFO L226 Difference]: Without dead ends: 185 [2022-11-16 11:34:07,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:34:07,352 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 23 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:07,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1518 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:34:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-16 11:34:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-11-16 11:34:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 115 states have internal predecessors, (131), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2022-11-16 11:34:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 248 transitions. [2022-11-16 11:34:07,389 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 248 transitions. Word has length 186 [2022-11-16 11:34:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:07,390 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 248 transitions. [2022-11-16 11:34:07,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 11:34:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 248 transitions. [2022-11-16 11:34:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 11:34:07,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:07,394 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:07,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:07,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:07,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -707204597, now seen corresponding path program 1 times [2022-11-16 11:34:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:07,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763425746] [2022-11-16 11:34:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:34:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:34:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:34:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:34:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-16 11:34:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 11:34:08,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:08,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763425746] [2022-11-16 11:34:08,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763425746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:08,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240057510] [2022-11-16 11:34:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:08,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:08,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:34:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:09,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:34:09,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-16 11:34:09,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 11:34:09,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240057510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:09,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:09,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-11-16 11:34:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900243608] [2022-11-16 11:34:09,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:34:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:34:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:34:09,937 INFO L87 Difference]: Start difference. First operand 184 states and 248 transitions. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2022-11-16 11:34:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:11,322 INFO L93 Difference]: Finished difference Result 325 states and 434 transitions. [2022-11-16 11:34:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) Word has length 190 [2022-11-16 11:34:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:11,325 INFO L225 Difference]: With dead ends: 325 [2022-11-16 11:34:11,325 INFO L226 Difference]: Without dead ends: 193 [2022-11-16 11:34:11,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:34:11,327 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 377 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:11,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 447 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:34:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-16 11:34:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2022-11-16 11:34:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 112 states have internal predecessors, (128), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2022-11-16 11:34:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 244 transitions. [2022-11-16 11:34:11,347 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 244 transitions. Word has length 190 [2022-11-16 11:34:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:11,347 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 244 transitions. [2022-11-16 11:34:11,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2022-11-16 11:34:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 244 transitions. [2022-11-16 11:34:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 11:34:11,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:11,351 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:11,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:11,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1422238006, now seen corresponding path program 1 times [2022-11-16 11:34:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:11,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485110176] [2022-11-16 11:34:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:34:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:34:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:34:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-16 11:34:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485110176] [2022-11-16 11:34:14,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485110176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848164854] [2022-11-16 11:34:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:14,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:34:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:34:15,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-16 11:34:15,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:15,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848164854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:15,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:15,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-11-16 11:34:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091590267] [2022-11-16 11:34:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:34:15,777 INFO L87 Difference]: Start difference. First operand 181 states and 244 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 11:34:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:16,118 INFO L93 Difference]: Finished difference Result 375 states and 527 transitions. [2022-11-16 11:34:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 196 [2022-11-16 11:34:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:16,121 INFO L225 Difference]: With dead ends: 375 [2022-11-16 11:34:16,121 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 11:34:16,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:34:16,123 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 40 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:16,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-16 11:34:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 11:34:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-11-16 11:34:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 119 states have internal predecessors, (137), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2022-11-16 11:34:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 253 transitions. [2022-11-16 11:34:16,142 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 253 transitions. Word has length 196 [2022-11-16 11:34:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:16,143 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 253 transitions. [2022-11-16 11:34:16,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 11:34:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 253 transitions. [2022-11-16 11:34:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 11:34:16,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:16,147 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:16,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:16,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1680403444, now seen corresponding path program 1 times [2022-11-16 11:34:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:16,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832960846] [2022-11-16 11:34:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:34:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:34:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:34:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-16 11:34:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:19,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832960846] [2022-11-16 11:34:19,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832960846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:19,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220515503] [2022-11-16 11:34:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:19,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:19,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:19,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:19,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:34:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:20,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:34:20,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:20,335 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:34:20,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-11-16 11:34:20,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-11-16 11:34:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 11:34:21,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:21,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220515503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:21,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:21,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [14] total 28 [2022-11-16 11:34:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514085521] [2022-11-16 11:34:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:34:21,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:34:21,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:34:21,473 INFO L87 Difference]: Start difference. First operand 188 states and 253 transitions. Second operand has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-11-16 11:34:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:23,073 INFO L93 Difference]: Finished difference Result 406 states and 566 transitions. [2022-11-16 11:34:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:34:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 196 [2022-11-16 11:34:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:23,077 INFO L225 Difference]: With dead ends: 406 [2022-11-16 11:34:23,077 INFO L226 Difference]: Without dead ends: 273 [2022-11-16 11:34:23,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 225 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:34:23,079 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 125 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 842 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:23,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1249 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1210 Invalid, 0 Unknown, 842 Unchecked, 1.3s Time] [2022-11-16 11:34:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-16 11:34:23,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2022-11-16 11:34:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 134 states have (on average 1.1791044776119404) internal successors, (158), 138 states have internal predecessors, (158), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (76), 59 states have call predecessors, (76), 59 states have call successors, (76) [2022-11-16 11:34:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 294 transitions. [2022-11-16 11:34:23,117 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 294 transitions. Word has length 196 [2022-11-16 11:34:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:23,122 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 294 transitions. [2022-11-16 11:34:23,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-11-16 11:34:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 294 transitions. [2022-11-16 11:34:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 11:34:23,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:23,127 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:23,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:23,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:23,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1263006838, now seen corresponding path program 1 times [2022-11-16 11:34:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:23,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880334236] [2022-11-16 11:34:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:34:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:34:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:34:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-16 11:34:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:24,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880334236] [2022-11-16 11:34:24,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880334236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:24,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425237119] [2022-11-16 11:34:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:24,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:24,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:34:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:34:24,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-16 11:34:24,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:24,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425237119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:24,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:24,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-16 11:34:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551600183] [2022-11-16 11:34:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:34:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:34:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:24,982 INFO L87 Difference]: Start difference. First operand 215 states and 294 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:34:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:25,030 INFO L93 Difference]: Finished difference Result 436 states and 612 transitions. [2022-11-16 11:34:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 196 [2022-11-16 11:34:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:25,033 INFO L225 Difference]: With dead ends: 436 [2022-11-16 11:34:25,034 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 11:34:25,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:34:25,036 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 26 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:25,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 675 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 11:34:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 213. [2022-11-16 11:34:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.1666666666666667) internal successors, (154), 136 states have internal predecessors, (154), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2022-11-16 11:34:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 287 transitions. [2022-11-16 11:34:25,063 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 287 transitions. Word has length 196 [2022-11-16 11:34:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:25,063 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 287 transitions. [2022-11-16 11:34:25,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:34:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 287 transitions. [2022-11-16 11:34:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-16 11:34:25,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:25,066 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:25,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:25,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:34:25,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2085564365, now seen corresponding path program 1 times [2022-11-16 11:34:25,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:25,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400323915] [2022-11-16 11:34:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:34:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:34:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:34:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 11:34:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:34:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-16 11:34:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 11:34:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:34:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-16 11:34:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-16 11:34:28,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400323915] [2022-11-16 11:34:28,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400323915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:28,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141559822] [2022-11-16 11:34:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:28,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:28,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:28,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:34:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:29,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:34:29,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:30,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 11:34:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 230 proven. 8 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 11:34:30,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:30,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-16 11:34:30,945 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:34:30,945 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 24 [2022-11-16 11:34:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-16 11:34:31,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141559822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:31,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:31,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 29 [2022-11-16 11:34:31,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962388108] [2022-11-16 11:34:31,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:34:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:34:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:34:31,032 INFO L87 Difference]: Start difference. First operand 213 states and 287 transitions. Second operand has 29 states, 26 states have (on average 4.730769230769231) internal successors, (123), 24 states have internal predecessors, (123), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) [2022-11-16 11:34:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:36,177 INFO L93 Difference]: Finished difference Result 448 states and 632 transitions. [2022-11-16 11:34:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:34:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.730769230769231) internal successors, (123), 24 states have internal predecessors, (123), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) Word has length 203 [2022-11-16 11:34:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:36,181 INFO L225 Difference]: With dead ends: 448 [2022-11-16 11:34:36,181 INFO L226 Difference]: Without dead ends: 312 [2022-11-16 11:34:36,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 449 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 11:34:36,183 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 461 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 491 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:36,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1009 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3506 Invalid, 0 Unknown, 491 Unchecked, 3.8s Time] [2022-11-16 11:34:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-16 11:34:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 284. [2022-11-16 11:34:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 180 states have (on average 1.1611111111111112) internal successors, (209), 182 states have internal predecessors, (209), 79 states have call successors, (79), 23 states have call predecessors, (79), 24 states have return successors, (111), 79 states have call predecessors, (111), 78 states have call successors, (111) [2022-11-16 11:34:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2022-11-16 11:34:36,218 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 203 [2022-11-16 11:34:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:36,218 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2022-11-16 11:34:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.730769230769231) internal successors, (123), 24 states have internal predecessors, (123), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) [2022-11-16 11:34:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2022-11-16 11:34:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 11:34:36,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:36,222 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:36,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:36,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:34:36,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -789049340, now seen corresponding path program 2 times [2022-11-16 11:34:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:36,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541328845] [2022-11-16 11:34:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:34:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:34:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:34:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:34:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 11:34:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 11:34:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-16 11:34:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-16 11:34:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:34:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 88 proven. 8 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-16 11:34:38,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:38,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541328845] [2022-11-16 11:34:38,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541328845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:38,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955845319] [2022-11-16 11:34:38,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:34:38,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:38,970 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:34:39,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:34:39,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:39,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-16 11:34:39,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:40,156 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:34:41,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-16 11:34:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 232 proven. 4 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 11:34:41,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:42,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2022-11-16 11:34:42,707 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:34:42,707 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 11:34:42,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-16 11:34:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 19 proven. 52 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-16 11:34:43,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955845319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:43,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:43,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 17] total 48 [2022-11-16 11:34:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039067726] [2022-11-16 11:34:43,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:43,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:34:43,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:34:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:34:43,217 INFO L87 Difference]: Start difference. First operand 284 states and 399 transitions. Second operand has 48 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 39 states have internal predecessors, (199), 14 states have call successors, (74), 11 states have call predecessors, (74), 16 states have return successors, (70), 14 states have call predecessors, (70), 14 states have call successors, (70) [2022-11-16 11:34:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:51,439 INFO L93 Difference]: Finished difference Result 607 states and 891 transitions. [2022-11-16 11:34:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:34:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 39 states have internal predecessors, (199), 14 states have call successors, (74), 11 states have call predecessors, (74), 16 states have return successors, (70), 14 states have call predecessors, (70), 14 states have call successors, (70) Word has length 204 [2022-11-16 11:34:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:51,443 INFO L225 Difference]: With dead ends: 607 [2022-11-16 11:34:51,443 INFO L226 Difference]: Without dead ends: 433 [2022-11-16 11:34:51,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 430 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=756, Invalid=5564, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 11:34:51,447 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 829 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 5491 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 7434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 5491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1396 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:51,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1119 Invalid, 7434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 5491 Invalid, 0 Unknown, 1396 Unchecked, 5.6s Time] [2022-11-16 11:34:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-16 11:34:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 352. [2022-11-16 11:34:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 237 states have (on average 1.1814345991561181) internal successors, (280), 241 states have internal predecessors, (280), 85 states have call successors, (85), 26 states have call predecessors, (85), 29 states have return successors, (136), 85 states have call predecessors, (136), 84 states have call successors, (136) [2022-11-16 11:34:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 501 transitions. [2022-11-16 11:34:51,490 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 501 transitions. Word has length 204 [2022-11-16 11:34:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:51,490 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 501 transitions. [2022-11-16 11:34:51,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 4.5227272727272725) internal successors, (199), 39 states have internal predecessors, (199), 14 states have call successors, (74), 11 states have call predecessors, (74), 16 states have return successors, (70), 14 states have call predecessors, (70), 14 states have call successors, (70) [2022-11-16 11:34:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 501 transitions. [2022-11-16 11:34:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 11:34:51,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:51,494 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:51,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:51,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:34:51,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 516631682, now seen corresponding path program 3 times [2022-11-16 11:34:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:51,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670627058] [2022-11-16 11:34:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:34:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:34:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:34:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:34:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:34:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:34:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 11:34:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-16 11:34:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-16 11:34:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:34:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-16 11:34:53,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:53,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670627058] [2022-11-16 11:34:53,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670627058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:53,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496728753] [2022-11-16 11:34:53,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:34:53,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:53,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:53,287 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:53,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:34:54,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:34:54,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:34:54,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-16 11:34:54,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:54,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496728753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:54,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:54,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 14 [2022-11-16 11:34:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782418322] [2022-11-16 11:34:54,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:54,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:34:54,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:34:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:34:54,613 INFO L87 Difference]: Start difference. First operand 352 states and 501 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:34:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:54,856 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-11-16 11:34:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:54,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 204 [2022-11-16 11:34:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:54,860 INFO L225 Difference]: With dead ends: 576 [2022-11-16 11:34:54,861 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 11:34:54,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:34:54,863 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 13 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:54,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1677 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:34:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 11:34:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 367. [2022-11-16 11:34:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 249 states have (on average 1.1726907630522088) internal successors, (292), 256 states have internal predecessors, (292), 85 states have call successors, (85), 26 states have call predecessors, (85), 32 states have return successors, (174), 85 states have call predecessors, (174), 84 states have call successors, (174) [2022-11-16 11:34:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 551 transitions. [2022-11-16 11:34:54,906 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 551 transitions. Word has length 204 [2022-11-16 11:34:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:54,906 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 551 transitions. [2022-11-16 11:34:54,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:34:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 551 transitions. [2022-11-16 11:34:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 11:34:54,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:54,910 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:54,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:55,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:55,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1501723078, now seen corresponding path program 1 times [2022-11-16 11:34:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:55,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523162465] [2022-11-16 11:34:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:34:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:34:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:34:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:34:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:34:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:34:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:34:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:34:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:34:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:34:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:34:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:34:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:34:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:34:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:34:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 11:34:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 11:34:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:34:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-16 11:34:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-16 11:34:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-16 11:34:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:34:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-16 11:34:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523162465] [2022-11-16 11:34:56,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523162465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433144087] [2022-11-16 11:34:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:56,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:56,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:56,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:34:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 11:34:57,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:57,806 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:34:59,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:34:59,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:34:59,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 33 treesize of output 17 [2022-11-16 11:34:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 232 proven. 4 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 11:34:59,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:00,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:35:00,399 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 35 [2022-11-16 11:35:01,074 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-16 11:35:01,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 34 [2022-11-16 11:35:01,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-16 11:35:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 19 proven. 52 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-16 11:35:01,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433144087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:01,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:01,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 19] total 48 [2022-11-16 11:35:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693874926] [2022-11-16 11:35:01,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:01,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:35:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:35:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2073, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:35:01,706 INFO L87 Difference]: Start difference. First operand 367 states and 551 transitions. Second operand has 48 states, 43 states have (on average 4.1395348837209305) internal successors, (178), 39 states have internal predecessors, (178), 14 states have call successors, (65), 10 states have call predecessors, (65), 15 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) [2022-11-16 11:35:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:11,912 INFO L93 Difference]: Finished difference Result 827 states and 1235 transitions. [2022-11-16 11:35:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-16 11:35:11,913 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 4.1395348837209305) internal successors, (178), 39 states have internal predecessors, (178), 14 states have call successors, (65), 10 states have call predecessors, (65), 15 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) Word has length 204 [2022-11-16 11:35:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:11,918 INFO L225 Difference]: With dead ends: 827 [2022-11-16 11:35:11,918 INFO L226 Difference]: Without dead ends: 542 [2022-11-16 11:35:11,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1278, Invalid=9642, Unknown=0, NotChecked=0, Total=10920 [2022-11-16 11:35:11,928 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 445 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 5178 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 7343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1909 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1552 Invalid, 7343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 5178 Invalid, 0 Unknown, 1909 Unchecked, 4.3s Time] [2022-11-16 11:35:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-16 11:35:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 401. [2022-11-16 11:35:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 281 states have (on average 1.1779359430604983) internal successors, (331), 287 states have internal predecessors, (331), 85 states have call successors, (85), 29 states have call predecessors, (85), 34 states have return successors, (151), 85 states have call predecessors, (151), 84 states have call successors, (151) [2022-11-16 11:35:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 567 transitions. [2022-11-16 11:35:11,977 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 567 transitions. Word has length 204 [2022-11-16 11:35:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:11,979 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 567 transitions. [2022-11-16 11:35:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 4.1395348837209305) internal successors, (178), 39 states have internal predecessors, (178), 14 states have call successors, (65), 10 states have call predecessors, (65), 15 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) [2022-11-16 11:35:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 567 transitions. [2022-11-16 11:35:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 11:35:11,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:11,991 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:12,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:12,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:35:12,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1841287331, now seen corresponding path program 2 times [2022-11-16 11:35:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884290070] [2022-11-16 11:35:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:35:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:35:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:35:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:35:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:35:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:35:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:35:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:35:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:35:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:35:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:35:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:35:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:35:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:35:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:35:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 11:35:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-16 11:35:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-16 11:35:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:35:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:35:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-16 11:35:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 73 proven. 10 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-11-16 11:35:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884290070] [2022-11-16 11:35:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884290070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119636611] [2022-11-16 11:35:18,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:18,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:18,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:18,320 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:18,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:35:19,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:35:19,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:35:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:19,307 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:35:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-16 11:35:19,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119636611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:19,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:35:19,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 32 [2022-11-16 11:35:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171012624] [2022-11-16 11:35:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:19,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:35:19,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:35:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:35:19,862 INFO L87 Difference]: Start difference. First operand 401 states and 567 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:35:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:20,059 INFO L93 Difference]: Finished difference Result 683 states and 959 transitions. [2022-11-16 11:35:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:35:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 207 [2022-11-16 11:35:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:20,063 INFO L225 Difference]: With dead ends: 683 [2022-11-16 11:35:20,063 INFO L226 Difference]: Without dead ends: 369 [2022-11-16 11:35:20,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:35:20,069 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 23 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1307 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-11-16 11:35:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-16 11:35:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-11-16 11:35:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 258 states have (on average 1.178294573643411) internal successors, (304), 265 states have internal predecessors, (304), 79 states have call successors, (79), 25 states have call predecessors, (79), 31 states have return successors, (136), 79 states have call predecessors, (136), 78 states have call successors, (136) [2022-11-16 11:35:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 519 transitions. [2022-11-16 11:35:20,103 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 519 transitions. Word has length 207 [2022-11-16 11:35:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:20,105 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 519 transitions. [2022-11-16 11:35:20,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:35:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 519 transitions. [2022-11-16 11:35:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 11:35:20,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:20,108 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:20,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:20,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:35:20,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash -99110933, now seen corresponding path program 1 times [2022-11-16 11:35:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:20,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633571233] [2022-11-16 11:35:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:35:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:35:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:35:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:35:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:35:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:35:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:35:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:35:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:35:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:35:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:35:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:35:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:35:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:35:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:35:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:35:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:35:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-16 11:35:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-16 11:35:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-16 11:35:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-16 11:35:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:25,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633571233] [2022-11-16 11:35:25,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633571233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:25,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341418019] [2022-11-16 11:35:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:25,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:25,326 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:25,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:35:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 11:35:26,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:26,693 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:35:26,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-16 11:35:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 266 proven. 22 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 11:35:27,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:28,795 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:35:28,796 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 24 [2022-11-16 11:35:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 30 proven. 72 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-16 11:35:28,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341418019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:28,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:28,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 12] total 41 [2022-11-16 11:35:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64268948] [2022-11-16 11:35:28,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:28,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 11:35:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 11:35:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 11:35:28,917 INFO L87 Difference]: Start difference. First operand 369 states and 519 transitions. Second operand has 41 states, 37 states have (on average 4.594594594594595) internal successors, (170), 35 states have internal predecessors, (170), 13 states have call successors, (59), 9 states have call predecessors, (59), 10 states have return successors, (54), 11 states have call predecessors, (54), 12 states have call successors, (54) [2022-11-16 11:35:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:40,363 INFO L93 Difference]: Finished difference Result 1025 states and 1620 transitions. [2022-11-16 11:35:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:35:40,364 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 4.594594594594595) internal successors, (170), 35 states have internal predecessors, (170), 13 states have call successors, (59), 9 states have call predecessors, (59), 10 states have return successors, (54), 11 states have call predecessors, (54), 12 states have call successors, (54) Word has length 206 [2022-11-16 11:35:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:40,370 INFO L225 Difference]: With dead ends: 1025 [2022-11-16 11:35:40,370 INFO L226 Difference]: Without dead ends: 657 [2022-11-16 11:35:40,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 438 SyntacticMatches, 11 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=753, Invalid=7435, Unknown=2, NotChecked=0, Total=8190 [2022-11-16 11:35:40,376 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 513 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 6500 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 7802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 6500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 885 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1556 Invalid, 7802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [417 Valid, 6500 Invalid, 0 Unknown, 885 Unchecked, 7.5s Time] [2022-11-16 11:35:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-16 11:35:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 458. [2022-11-16 11:35:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 324 states have (on average 1.1574074074074074) internal successors, (375), 336 states have internal predecessors, (375), 94 states have call successors, (94), 28 states have call predecessors, (94), 39 states have return successors, (206), 94 states have call predecessors, (206), 93 states have call successors, (206) [2022-11-16 11:35:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 675 transitions. [2022-11-16 11:35:40,441 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 675 transitions. Word has length 206 [2022-11-16 11:35:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:40,442 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 675 transitions. [2022-11-16 11:35:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 4.594594594594595) internal successors, (170), 35 states have internal predecessors, (170), 13 states have call successors, (59), 9 states have call predecessors, (59), 10 states have return successors, (54), 11 states have call predecessors, (54), 12 states have call successors, (54) [2022-11-16 11:35:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 675 transitions. [2022-11-16 11:35:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 11:35:40,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:40,447 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:35:40,659 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 472874958, now seen corresponding path program 1 times [2022-11-16 11:35:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:40,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117280655] [2022-11-16 11:35:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:35:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:35:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:35:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:35:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:35:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:35:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:35:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:35:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:35:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:35:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:35:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:35:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:35:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:35:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:35:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 11:35:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:35:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:35:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-16 11:35:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-16 11:35:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-16 11:35:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:41,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117280655] [2022-11-16 11:35:41,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117280655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179004137] [2022-11-16 11:35:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:41,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:41,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:41,132 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:41,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:35:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:41,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:35:41,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-16 11:35:41,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179004137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:41,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:35:41,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-16 11:35:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472289303] [2022-11-16 11:35:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:41,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:35:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:35:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:35:41,940 INFO L87 Difference]: Start difference. First operand 458 states and 675 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:35:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:41,999 INFO L93 Difference]: Finished difference Result 864 states and 1304 transitions. [2022-11-16 11:35:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:35:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2022-11-16 11:35:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:42,002 INFO L225 Difference]: With dead ends: 864 [2022-11-16 11:35:42,002 INFO L226 Difference]: Without dead ends: 404 [2022-11-16 11:35:42,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:35:42,007 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 9 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:42,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 663 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:35:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-16 11:35:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 382. [2022-11-16 11:35:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 265 states have (on average 1.1471698113207547) internal successors, (304), 275 states have internal predecessors, (304), 83 states have call successors, (83), 24 states have call predecessors, (83), 33 states have return successors, (153), 83 states have call predecessors, (153), 82 states have call successors, (153) [2022-11-16 11:35:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 540 transitions. [2022-11-16 11:35:42,053 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 540 transitions. Word has length 208 [2022-11-16 11:35:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:42,053 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 540 transitions. [2022-11-16 11:35:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:35:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 540 transitions. [2022-11-16 11:35:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 11:35:42,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:42,056 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:42,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:42,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:35:42,267 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1404133208, now seen corresponding path program 1 times [2022-11-16 11:35:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:42,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163172929] [2022-11-16 11:35:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:35:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:35:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:35:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:35:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:35:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:35:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:35:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:35:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:35:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:35:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:35:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:35:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:35:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:35:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:35:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 11:35:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:35:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:35:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-16 11:35:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-16 11:35:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-16 11:35:44,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163172929] [2022-11-16 11:35:44,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163172929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403814518] [2022-11-16 11:35:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:44,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:44,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:44,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:44,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:35:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:45,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:35:45,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:45,730 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:35:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-16 11:35:46,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:46,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403814518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:46,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:35:46,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2022-11-16 11:35:46,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058435028] [2022-11-16 11:35:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:46,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:35:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:35:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:46,144 INFO L87 Difference]: Start difference. First operand 382 states and 540 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:35:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:46,376 INFO L93 Difference]: Finished difference Result 774 states and 1083 transitions. [2022-11-16 11:35:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:35:46,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 208 [2022-11-16 11:35:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:46,380 INFO L225 Difference]: With dead ends: 774 [2022-11-16 11:35:46,380 INFO L226 Difference]: Without dead ends: 395 [2022-11-16 11:35:46,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:35:46,383 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 18 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:46,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1765 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 121 Unchecked, 0.2s Time] [2022-11-16 11:35:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-16 11:35:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 389. [2022-11-16 11:35:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 272 states have (on average 1.150735294117647) internal successors, (313), 281 states have internal predecessors, (313), 83 states have call successors, (83), 25 states have call predecessors, (83), 33 states have return successors, (152), 83 states have call predecessors, (152), 82 states have call successors, (152) [2022-11-16 11:35:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 548 transitions. [2022-11-16 11:35:46,427 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 548 transitions. Word has length 208 [2022-11-16 11:35:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:46,427 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 548 transitions. [2022-11-16 11:35:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 11:35:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 548 transitions. [2022-11-16 11:35:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-16 11:35:46,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:46,431 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:46,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:46,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:35:46,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:46,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:46,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2019975152, now seen corresponding path program 2 times [2022-11-16 11:35:46,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:46,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139031569] [2022-11-16 11:35:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:35:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:35:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:35:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:35:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:35:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:35:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:35:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:35:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:35:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:35:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:35:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:35:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:35:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:35:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:35:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 11:35:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-16 11:35:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 11:35:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:35:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-16 11:35:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:35:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-16 11:35:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-16 11:35:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:47,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139031569] [2022-11-16 11:35:47,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139031569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:47,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745911654] [2022-11-16 11:35:47,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:47,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:47,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:47,895 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:47,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:35:49,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:35:49,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:35:49,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:49,291 INFO L350 Elim1Store]: Elim1 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 8 [2022-11-16 11:35:49,459 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:35:54,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:35:54,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:35:54,982 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3894 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_3894) |c_#memory_int|)) (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_3893 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_3893)))) is different from true [2022-11-16 11:35:55,004 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:35:55,010 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:35:55,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 11:35:55,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:35:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 239 proven. 29 refuted. 0 times theorem prover too weak. 124 trivial. 2 not checked. [2022-11-16 11:35:55,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:56,367 WARN L833 $PredicateComparison]: unable to prove that (and (< 0 (+ |c_#StackHeapBarrier| 1)) (forall ((v_ArrVal_3902 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_3902) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616))) (forall ((v_ArrVal_3901 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_3901) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0)))) is different from false [2022-11-16 11:35:56,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745911654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:56,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:56,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2022-11-16 11:35:56,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329766852] [2022-11-16 11:35:56,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:56,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:35:56,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:56,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:35:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1148, Unknown=7, NotChecked=138, Total=1406 [2022-11-16 11:35:56,372 INFO L87 Difference]: Start difference. First operand 389 states and 548 transitions. Second operand has 34 states, 31 states have (on average 5.129032258064516) internal successors, (159), 25 states have internal predecessors, (159), 12 states have call successors, (50), 9 states have call predecessors, (50), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) [2022-11-16 11:36:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:11,755 INFO L93 Difference]: Finished difference Result 832 states and 1142 transitions. [2022-11-16 11:36:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:36:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 5.129032258064516) internal successors, (159), 25 states have internal predecessors, (159), 12 states have call successors, (50), 9 states have call predecessors, (50), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) Word has length 212 [2022-11-16 11:36:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:11,759 INFO L225 Difference]: With dead ends: 832 [2022-11-16 11:36:11,759 INFO L226 Difference]: Without dead ends: 438 [2022-11-16 11:36:11,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 357 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=344, Invalid=3554, Unknown=16, NotChecked=246, Total=4160 [2022-11-16 11:36:11,763 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 253 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 775 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:11,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1265 Invalid, 3766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2835 Invalid, 0 Unknown, 775 Unchecked, 2.2s Time] [2022-11-16 11:36:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-16 11:36:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 413. [2022-11-16 11:36:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 286 states have (on average 1.1398601398601398) internal successors, (326), 295 states have internal predecessors, (326), 87 states have call successors, (87), 31 states have call predecessors, (87), 39 states have return successors, (153), 87 states have call predecessors, (153), 86 states have call successors, (153) [2022-11-16 11:36:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 566 transitions. [2022-11-16 11:36:11,810 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 566 transitions. Word has length 212 [2022-11-16 11:36:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:11,810 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 566 transitions. [2022-11-16 11:36:11,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 5.129032258064516) internal successors, (159), 25 states have internal predecessors, (159), 12 states have call successors, (50), 9 states have call predecessors, (50), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) [2022-11-16 11:36:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 566 transitions. [2022-11-16 11:36:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-16 11:36:11,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:11,814 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:11,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:12,026 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1368569287, now seen corresponding path program 3 times [2022-11-16 11:36:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107564238] [2022-11-16 11:36:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:36:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:36:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:36:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:36:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:36:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:36:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:36:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:36:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:36:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:36:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:36:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:36:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:36:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:36:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:36:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-16 11:36:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:36:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-16 11:36:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-16 11:36:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-16 11:36:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 11:36:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107564238] [2022-11-16 11:36:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107564238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788934054] [2022-11-16 11:36:14,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:36:14,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:14,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:14,682 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:14,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:36:16,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:36:16,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:36:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:16,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 170 proven. 13 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-16 11:36:17,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:17,466 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:36:17,466 INFO L350 Elim1Store]: Elim1 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 19 [2022-11-16 11:36:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 100 proven. 14 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-16 11:36:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788934054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:17,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 26 [2022-11-16 11:36:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329185618] [2022-11-16 11:36:17,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:36:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:36:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:36:17,559 INFO L87 Difference]: Start difference. First operand 413 states and 566 transitions. Second operand has 26 states, 25 states have (on average 5.04) internal successors, (126), 21 states have internal predecessors, (126), 7 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-16 11:36:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:23,388 INFO L93 Difference]: Finished difference Result 916 states and 1319 transitions. [2022-11-16 11:36:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:36:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.04) internal successors, (126), 21 states have internal predecessors, (126), 7 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 214 [2022-11-16 11:36:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:23,393 INFO L225 Difference]: With dead ends: 916 [2022-11-16 11:36:23,393 INFO L226 Difference]: Without dead ends: 612 [2022-11-16 11:36:23,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 468 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=482, Invalid=2816, Unknown=8, NotChecked=0, Total=3306 [2022-11-16 11:36:23,396 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 583 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:23,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 687 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3231 Invalid, 0 Unknown, 639 Unchecked, 3.6s Time] [2022-11-16 11:36:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-16 11:36:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 539. [2022-11-16 11:36:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 376 states have (on average 1.1090425531914894) internal successors, (417), 388 states have internal predecessors, (417), 115 states have call successors, (115), 37 states have call predecessors, (115), 47 states have return successors, (204), 114 states have call predecessors, (204), 114 states have call successors, (204) [2022-11-16 11:36:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 736 transitions. [2022-11-16 11:36:23,465 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 736 transitions. Word has length 214 [2022-11-16 11:36:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:23,465 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 736 transitions. [2022-11-16 11:36:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.04) internal successors, (126), 21 states have internal predecessors, (126), 7 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-16 11:36:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 736 transitions. [2022-11-16 11:36:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-16 11:36:23,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:23,469 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:36:23,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:23,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -163440359, now seen corresponding path program 1 times [2022-11-16 11:36:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:23,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244411680] [2022-11-16 11:36:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:36:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:36:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:36:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:36:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:36:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:36:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:36:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:36:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:36:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:36:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:36:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:36:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:36:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:36:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:36:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:36:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-16 11:36:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:36:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-16 11:36:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:36:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:36:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-16 11:36:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:25,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244411680] [2022-11-16 11:36:25,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244411680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198845308] [2022-11-16 11:36:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:25,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:25,155 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:25,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:36:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:36:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:26,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 11:36:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 252 proven. 8 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-16 11:36:26,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:26,907 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:36:26,907 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 19 [2022-11-16 11:36:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-16 11:36:26,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198845308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:26,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:26,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 27 [2022-11-16 11:36:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720600717] [2022-11-16 11:36:26,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:36:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:36:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:36:26,995 INFO L87 Difference]: Start difference. First operand 539 states and 736 transitions. Second operand has 27 states, 25 states have (on average 5.4) internal successors, (135), 23 states have internal predecessors, (135), 8 states have call successors, (56), 8 states have call predecessors, (56), 9 states have return successors, (52), 7 states have call predecessors, (52), 8 states have call successors, (52) [2022-11-16 11:36:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:31,012 INFO L93 Difference]: Finished difference Result 1050 states and 1436 transitions. [2022-11-16 11:36:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:36:31,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.4) internal successors, (135), 23 states have internal predecessors, (135), 8 states have call successors, (56), 8 states have call predecessors, (56), 9 states have return successors, (52), 7 states have call predecessors, (52), 8 states have call successors, (52) Word has length 219 [2022-11-16 11:36:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:31,016 INFO L225 Difference]: With dead ends: 1050 [2022-11-16 11:36:31,016 INFO L226 Difference]: Without dead ends: 653 [2022-11-16 11:36:31,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=368, Invalid=2284, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 11:36:31,020 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 540 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 3632 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 423 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:31,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1184 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3632 Invalid, 0 Unknown, 423 Unchecked, 2.9s Time] [2022-11-16 11:36:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-16 11:36:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 602. [2022-11-16 11:36:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 422 states have (on average 1.1161137440758293) internal successors, (471), 437 states have internal predecessors, (471), 128 states have call successors, (128), 39 states have call predecessors, (128), 51 states have return successors, (209), 127 states have call predecessors, (209), 127 states have call successors, (209) [2022-11-16 11:36:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 808 transitions. [2022-11-16 11:36:31,100 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 808 transitions. Word has length 219 [2022-11-16 11:36:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:31,101 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 808 transitions. [2022-11-16 11:36:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.4) internal successors, (135), 23 states have internal predecessors, (135), 8 states have call successors, (56), 8 states have call predecessors, (56), 9 states have return successors, (52), 7 states have call predecessors, (52), 8 states have call successors, (52) [2022-11-16 11:36:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 808 transitions. [2022-11-16 11:36:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-16 11:36:31,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:31,105 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:31,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 11:36:31,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:31,318 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash 643680066, now seen corresponding path program 1 times [2022-11-16 11:36:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927603118] [2022-11-16 11:36:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:36:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:36:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:36:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:36:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:36:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:36:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:36:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:36:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:36:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:36:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:36:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:36:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:36:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:36:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:36:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:36:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-16 11:36:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:36:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:36:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:36:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-16 11:36:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:36:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-16 11:36:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-16 11:36:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:38,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927603118] [2022-11-16 11:36:38,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927603118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:38,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013551942] [2022-11-16 11:36:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:38,191 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:38,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:36:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:39,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3155 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-16 11:36:39,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:39,095 INFO L350 Elim1Store]: Elim1 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 8 [2022-11-16 11:36:39,264 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:37:14,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:14,106 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4609 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_4609) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:37:14,117 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:37:32,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:32,728 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 11:37:32,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:37:32,736 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_1) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:37:32,755 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:37:32,755 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 23 [2022-11-16 11:37:32,760 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-11-16 11:37:32,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:32,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:32,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:54,924 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-16 11:37:54,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2022-11-16 11:37:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 135 proven. 218 refuted. 0 times theorem prover too weak. 81 trivial. 4 not checked. [2022-11-16 11:37:56,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 92 proven. 10 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-11-16 11:37:58,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013551942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:58,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:58,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 41, 13] total 78 [2022-11-16 11:37:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544589405] [2022-11-16 11:37:58,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-16 11:37:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-16 11:37:58,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=5364, Unknown=19, NotChecked=298, Total=6006 [2022-11-16 11:37:58,114 INFO L87 Difference]: Start difference. First operand 602 states and 808 transitions. Second operand has 78 states, 70 states have (on average 3.3142857142857145) internal successors, (232), 67 states have internal predecessors, (232), 28 states have call successors, (79), 10 states have call predecessors, (79), 20 states have return successors, (75), 24 states have call predecessors, (75), 27 states have call successors, (75) [2022-11-16 11:38:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:38,442 INFO L93 Difference]: Finished difference Result 1294 states and 1755 transitions. [2022-11-16 11:38:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:38:38,443 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 70 states have (on average 3.3142857142857145) internal successors, (232), 67 states have internal predecessors, (232), 28 states have call successors, (79), 10 states have call predecessors, (79), 20 states have return successors, (75), 24 states have call predecessors, (75), 27 states have call successors, (75) Word has length 221 [2022-11-16 11:38:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:38,448 INFO L225 Difference]: With dead ends: 1294 [2022-11-16 11:38:38,448 INFO L226 Difference]: Without dead ends: 800 [2022-11-16 11:38:38,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 437 SyntacticMatches, 18 SemanticMatches, 120 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 109.6s TimeCoverageRelationStatistics Valid=979, Invalid=13261, Unknown=48, NotChecked=474, Total=14762 [2022-11-16 11:38:38,454 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 493 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 9239 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 13605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 9239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3931 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:38,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2858 Invalid, 13605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [435 Valid, 9239 Invalid, 0 Unknown, 3931 Unchecked, 8.3s Time] [2022-11-16 11:38:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-16 11:38:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 691. [2022-11-16 11:38:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 481 states have (on average 1.1226611226611227) internal successors, (540), 499 states have internal predecessors, (540), 150 states have call successors, (150), 44 states have call predecessors, (150), 59 states have return successors, (242), 150 states have call predecessors, (242), 149 states have call successors, (242) [2022-11-16 11:38:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 932 transitions. [2022-11-16 11:38:38,615 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 932 transitions. Word has length 221 [2022-11-16 11:38:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:38,616 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 932 transitions. [2022-11-16 11:38:38,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 70 states have (on average 3.3142857142857145) internal successors, (232), 67 states have internal predecessors, (232), 28 states have call successors, (79), 10 states have call predecessors, (79), 20 states have return successors, (75), 24 states have call predecessors, (75), 27 states have call successors, (75) [2022-11-16 11:38:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 932 transitions. [2022-11-16 11:38:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-16 11:38:38,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:38,620 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:38:38,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:38,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:38,832 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash 978428627, now seen corresponding path program 4 times [2022-11-16 11:38:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:38,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348052761] [2022-11-16 11:38:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:38:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:38:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:38:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:38:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:38:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:38:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:38:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:38:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:38:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:38:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:38:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:38:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:38:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:38:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-16 11:38:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 11:38:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-16 11:38:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-16 11:38:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-16 11:38:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-16 11:38:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-16 11:38:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 28 proven. 23 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-16 11:38:40,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:40,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348052761] [2022-11-16 11:38:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348052761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721619842] [2022-11-16 11:38:40,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:38:40,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:40,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:40,245 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:40,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:38:41,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:38:41,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:38:41,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:38:41,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-16 11:38:41,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:41,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721619842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:41,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:38:41,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-11-16 11:38:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148490631] [2022-11-16 11:38:41,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:38:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:41,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:38:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:38:41,187 INFO L87 Difference]: Start difference. First operand 691 states and 932 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:38:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:41,452 INFO L93 Difference]: Finished difference Result 1167 states and 1589 transitions. [2022-11-16 11:38:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:38:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 218 [2022-11-16 11:38:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:41,457 INFO L225 Difference]: With dead ends: 1167 [2022-11-16 11:38:41,457 INFO L226 Difference]: Without dead ends: 576 [2022-11-16 11:38:41,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:38:41,461 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 13 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:41,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1642 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:38:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-16 11:38:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 551. [2022-11-16 11:38:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 375 states have (on average 1.136) internal successors, (426), 389 states have internal predecessors, (426), 126 states have call successors, (126), 38 states have call predecessors, (126), 49 states have return successors, (191), 126 states have call predecessors, (191), 125 states have call successors, (191) [2022-11-16 11:38:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 743 transitions. [2022-11-16 11:38:41,543 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 743 transitions. Word has length 218 [2022-11-16 11:38:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:41,543 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 743 transitions. [2022-11-16 11:38:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-16 11:38:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 743 transitions. [2022-11-16 11:38:41,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-16 11:38:41,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:41,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:41,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-16 11:38:41,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:38:41,759 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2037656190, now seen corresponding path program 1 times [2022-11-16 11:38:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887825971] [2022-11-16 11:38:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:41,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:38:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:38:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:38:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:38:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:38:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:38:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:38:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:38:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:38:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:38:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:38:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:38:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:38:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:38:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:38:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 11:38:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:38:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:38:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-16 11:38:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-16 11:38:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-16 11:38:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 29 proven. 84 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-16 11:38:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887825971] [2022-11-16 11:38:48,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887825971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:48,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304178550] [2022-11-16 11:38:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:48,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:48,491 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:48,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:38:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:49,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 11:38:49,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:51,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:51,894 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:38:51,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 48 [2022-11-16 11:38:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 300 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-16 11:38:59,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:00,001 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:39:00,002 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 19 [2022-11-16 11:39:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 76 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-16 11:39:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304178550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:00,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:00,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15, 13] total 49 [2022-11-16 11:39:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479363070] [2022-11-16 11:39:00,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 11:39:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 11:39:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2174, Unknown=1, NotChecked=0, Total=2352 [2022-11-16 11:39:00,096 INFO L87 Difference]: Start difference. First operand 551 states and 743 transitions. Second operand has 49 states, 45 states have (on average 4.0) internal successors, (180), 43 states have internal predecessors, (180), 19 states have call successors, (70), 9 states have call predecessors, (70), 11 states have return successors, (67), 17 states have call predecessors, (67), 18 states have call successors, (67) [2022-11-16 11:39:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:16,282 INFO L93 Difference]: Finished difference Result 1205 states and 1729 transitions. [2022-11-16 11:39:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-16 11:39:16,283 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 4.0) internal successors, (180), 43 states have internal predecessors, (180), 19 states have call successors, (70), 9 states have call predecessors, (70), 11 states have return successors, (67), 17 states have call predecessors, (67), 18 states have call successors, (67) Word has length 220 [2022-11-16 11:39:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:16,288 INFO L225 Difference]: With dead ends: 1205 [2022-11-16 11:39:16,289 INFO L226 Difference]: Without dead ends: 860 [2022-11-16 11:39:16,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 481 SyntacticMatches, 9 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=739, Invalid=8374, Unknown=7, NotChecked=0, Total=9120 [2022-11-16 11:39:16,292 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 643 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 7413 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 9342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 7413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1243 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:16,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1995 Invalid, 9342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [686 Valid, 7413 Invalid, 0 Unknown, 1243 Unchecked, 8.9s Time] [2022-11-16 11:39:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-16 11:39:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 642. [2022-11-16 11:39:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 428 states have (on average 1.1214953271028036) internal successors, (480), 443 states have internal predecessors, (480), 159 states have call successors, (159), 42 states have call predecessors, (159), 54 states have return successors, (238), 159 states have call predecessors, (238), 158 states have call successors, (238) [2022-11-16 11:39:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 877 transitions. [2022-11-16 11:39:16,409 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 877 transitions. Word has length 220 [2022-11-16 11:39:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:16,409 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 877 transitions. [2022-11-16 11:39:16,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 4.0) internal successors, (180), 43 states have internal predecessors, (180), 19 states have call successors, (70), 9 states have call predecessors, (70), 11 states have return successors, (67), 17 states have call predecessors, (67), 18 states have call successors, (67) [2022-11-16 11:39:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 877 transitions. [2022-11-16 11:39:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-16 11:39:16,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:16,413 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:16,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:39:16,625 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -263100612, now seen corresponding path program 2 times [2022-11-16 11:39:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:16,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881661973] [2022-11-16 11:39:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:16,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:39:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:39:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:39:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:39:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:39:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:39:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:39:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:39:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:39:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:39:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:39:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:39:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:39:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:39:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 11:39:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 11:39:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:39:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:39:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-16 11:39:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-16 11:39:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-16 11:39:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 39 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-16 11:39:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:20,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881661973] [2022-11-16 11:39:20,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881661973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:20,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147174122] [2022-11-16 11:39:20,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:39:20,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:20,478 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:20,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:39:21,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:39:21,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:21,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 3121 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 11:39:21,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:21,831 INFO L350 Elim1Store]: Elim1 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 8 [2022-11-16 11:39:22,004 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:39:27,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:39:27,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:39:27,571 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5257 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_5257))) (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_5258 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_5258)))) is different from true [2022-11-16 11:39:27,591 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:39:27,595 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:39:28,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 11:39:28,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:39:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 2 not checked. [2022-11-16 11:39:28,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:28,932 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5266 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_5266) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0))) (forall ((v_ArrVal_5265 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_5265) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616))) (< 0 (+ |c_#StackHeapBarrier| 1))) is different from false [2022-11-16 11:39:28,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147174122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:28,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:39:28,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 38 [2022-11-16 11:39:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072799824] [2022-11-16 11:39:28,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:39:28,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:39:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1428, Unknown=7, NotChecked=154, Total=1722 [2022-11-16 11:39:28,936 INFO L87 Difference]: Start difference. First operand 642 states and 877 transitions. Second operand has 38 states, 36 states have (on average 4.666666666666667) internal successors, (168), 29 states have internal predecessors, (168), 15 states have call successors, (52), 9 states have call predecessors, (52), 13 states have return successors, (50), 16 states have call predecessors, (50), 15 states have call successors, (50) [2022-11-16 11:39:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:47,443 INFO L93 Difference]: Finished difference Result 1301 states and 1810 transitions. [2022-11-16 11:39:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:39:47,444 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.666666666666667) internal successors, (168), 29 states have internal predecessors, (168), 15 states have call successors, (52), 9 states have call predecessors, (52), 13 states have return successors, (50), 16 states have call predecessors, (50), 15 states have call successors, (50) Word has length 220 [2022-11-16 11:39:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:47,450 INFO L225 Difference]: With dead ends: 1301 [2022-11-16 11:39:47,450 INFO L226 Difference]: Without dead ends: 965 [2022-11-16 11:39:47,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 383 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=440, Invalid=4522, Unknown=16, NotChecked=278, Total=5256 [2022-11-16 11:39:47,454 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 363 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 5473 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 7305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1498 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:47,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 2081 Invalid, 7305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 5473 Invalid, 0 Unknown, 1498 Unchecked, 4.8s Time] [2022-11-16 11:39:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-11-16 11:39:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 943. [2022-11-16 11:39:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 602 states have (on average 1.1229235880398671) internal successors, (676), 623 states have internal predecessors, (676), 259 states have call successors, (259), 64 states have call predecessors, (259), 81 states have return successors, (402), 260 states have call predecessors, (402), 257 states have call successors, (402) [2022-11-16 11:39:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1337 transitions. [2022-11-16 11:39:47,597 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1337 transitions. Word has length 220 [2022-11-16 11:39:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:47,598 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1337 transitions. [2022-11-16 11:39:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.666666666666667) internal successors, (168), 29 states have internal predecessors, (168), 15 states have call successors, (52), 9 states have call predecessors, (52), 13 states have return successors, (50), 16 states have call predecessors, (50), 15 states have call successors, (50) [2022-11-16 11:39:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1337 transitions. [2022-11-16 11:39:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-16 11:39:47,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:47,603 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:47,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:47,815 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -301450055, now seen corresponding path program 1 times [2022-11-16 11:39:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201118849] [2022-11-16 11:39:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:39:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:39:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:39:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:39:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:39:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:39:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:39:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:39:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:39:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:39:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:39:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:39:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:39:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:39:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:39:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:39:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:39:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:39:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-16 11:39:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:39:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:39:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:39:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-16 11:39:50,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:50,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201118849] [2022-11-16 11:39:50,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201118849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:50,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236907166] [2022-11-16 11:39:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:50,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:50,930 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:50,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:39:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 3161 conjuncts, 155 conjunts are in the unsatisfiable core [2022-11-16 11:39:52,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:52,056 INFO L350 Elim1Store]: Elim1 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 8 [2022-11-16 11:39:52,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:39:53,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:39:53,340 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5522 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_5522) |c_#memory_int|)) is different from true [2022-11-16 11:39:53,356 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:39:54,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:39:54,161 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_5526 Int) (v_ArrVal_5524 Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_5524) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_5526)) |c_#memory_int|)) is different from true [2022-11-16 11:39:54,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:54,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:54,195 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:39:54,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 46 [2022-11-16 11:39:54,274 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:39:54,275 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 23 [2022-11-16 11:39:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 257 proven. 150 refuted. 0 times theorem prover too weak. 51 trivial. 2 not checked. [2022-11-16 11:39:57,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 96 proven. 10 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-16 11:39:58,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236907166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:58,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:58,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 38, 12] total 60 [2022-11-16 11:39:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839467597] [2022-11-16 11:39:58,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:58,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-16 11:39:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-16 11:39:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3068, Unknown=5, NotChecked=226, Total=3540 [2022-11-16 11:39:58,935 INFO L87 Difference]: Start difference. First operand 943 states and 1337 transitions. Second operand has 60 states, 55 states have (on average 4.290909090909091) internal successors, (236), 53 states have internal predecessors, (236), 19 states have call successors, (65), 11 states have call predecessors, (65), 15 states have return successors, (57), 15 states have call predecessors, (57), 18 states have call successors, (57) [2022-11-16 11:40:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:15,662 INFO L93 Difference]: Finished difference Result 1882 states and 2776 transitions. [2022-11-16 11:40:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-16 11:40:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 55 states have (on average 4.290909090909091) internal successors, (236), 53 states have internal predecessors, (236), 19 states have call successors, (65), 11 states have call predecessors, (65), 15 states have return successors, (57), 15 states have call predecessors, (57), 18 states have call successors, (57) Word has length 227 [2022-11-16 11:40:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:15,674 INFO L225 Difference]: With dead ends: 1882 [2022-11-16 11:40:15,674 INFO L226 Difference]: Without dead ends: 1411 [2022-11-16 11:40:15,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 464 SyntacticMatches, 17 SemanticMatches, 126 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1671, Invalid=14043, Unknown=44, NotChecked=498, Total=16256 [2022-11-16 11:40:15,680 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 676 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 6924 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 10792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 6924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3446 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:15,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1773 Invalid, 10792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [422 Valid, 6924 Invalid, 0 Unknown, 3446 Unchecked, 7.9s Time] [2022-11-16 11:40:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-11-16 11:40:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1166. [2022-11-16 11:40:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 753 states have (on average 1.1274900398406376) internal successors, (849), 775 states have internal predecessors, (849), 316 states have call successors, (316), 80 states have call predecessors, (316), 96 states have return successors, (483), 315 states have call predecessors, (483), 314 states have call successors, (483) [2022-11-16 11:40:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1648 transitions. [2022-11-16 11:40:15,911 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1648 transitions. Word has length 227 [2022-11-16 11:40:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:15,912 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1648 transitions. [2022-11-16 11:40:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 55 states have (on average 4.290909090909091) internal successors, (236), 53 states have internal predecessors, (236), 19 states have call successors, (65), 11 states have call predecessors, (65), 15 states have return successors, (57), 15 states have call predecessors, (57), 18 states have call successors, (57) [2022-11-16 11:40:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1648 transitions. [2022-11-16 11:40:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-16 11:40:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:15,918 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:16,131 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -126095557, now seen corresponding path program 2 times [2022-11-16 11:40:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:16,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813193487] [2022-11-16 11:40:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:40:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:40:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:40:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:40:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:40:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:40:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:40:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:40:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:40:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:40:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:40:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:40:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:40:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:40:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:40:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:40:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:40:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:40:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 11:40:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:40:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:40:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:40:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-16 11:40:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813193487] [2022-11-16 11:40:20,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813193487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5341438] [2022-11-16 11:40:20,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:40:20,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:20,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:20,317 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:20,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:40:21,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:40:21,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:40:21,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 3166 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 11:40:21,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:21,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:40:26,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:40:26,603 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_5800 Int) (v_ArrVal_5798 Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_5798) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_5800)) |c_#memory_int|)) is different from true [2022-11-16 11:40:26,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,635 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:40:26,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 47 [2022-11-16 11:40:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:26,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:40:26,741 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:40:26,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 55 [2022-11-16 11:40:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 322 proven. 32 refuted. 0 times theorem prover too weak. 104 trivial. 2 not checked. [2022-11-16 11:40:34,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:39,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5341438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:39,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:40:39,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 45 [2022-11-16 11:40:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944408645] [2022-11-16 11:40:39,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 11:40:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 11:40:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2462, Unknown=6, NotChecked=100, Total=2756 [2022-11-16 11:40:39,203 INFO L87 Difference]: Start difference. First operand 1166 states and 1648 transitions. Second operand has 45 states, 40 states have (on average 4.1) internal successors, (164), 38 states have internal predecessors, (164), 16 states have call successors, (52), 8 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 16 states have call successors, (50) [2022-11-16 11:41:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:17,910 INFO L93 Difference]: Finished difference Result 1750 states and 2466 transitions. [2022-11-16 11:41:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:41:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 4.1) internal successors, (164), 38 states have internal predecessors, (164), 16 states have call successors, (52), 8 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 16 states have call successors, (50) Word has length 227 [2022-11-16 11:41:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:17,919 INFO L225 Difference]: With dead ends: 1750 [2022-11-16 11:41:17,920 INFO L226 Difference]: Without dead ends: 1245 [2022-11-16 11:41:17,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 361 SyntacticMatches, 7 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2877 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=916, Invalid=9369, Unknown=21, NotChecked=200, Total=10506 [2022-11-16 11:41:17,925 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 316 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 3794 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 5208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1247 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 972 Invalid, 5208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3794 Invalid, 0 Unknown, 1247 Unchecked, 3.7s Time] [2022-11-16 11:41:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-11-16 11:41:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1207. [2022-11-16 11:41:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 784 states have (on average 1.1224489795918366) internal successors, (880), 808 states have internal predecessors, (880), 321 states have call successors, (321), 83 states have call predecessors, (321), 101 states have return successors, (480), 320 states have call predecessors, (480), 319 states have call successors, (480) [2022-11-16 11:41:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1681 transitions. [2022-11-16 11:41:18,133 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1681 transitions. Word has length 227 [2022-11-16 11:41:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:18,134 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1681 transitions. [2022-11-16 11:41:18,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 4.1) internal successors, (164), 38 states have internal predecessors, (164), 16 states have call successors, (52), 8 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 16 states have call successors, (50) [2022-11-16 11:41:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1681 transitions. [2022-11-16 11:41:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-16 11:41:18,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:18,140 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:18,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:18,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:18,358 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1331237216, now seen corresponding path program 1 times [2022-11-16 11:41:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005534015] [2022-11-16 11:41:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:41:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:41:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:41:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:41:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:41:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:41:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:41:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:41:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:41:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:41:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:41:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:41:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:41:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:41:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:41:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:41:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:41:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:41:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:41:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-16 11:41:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:41:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:41:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:41:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-16 11:41:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005534015] [2022-11-16 11:41:19,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005534015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:19,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:19,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:41:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978471736] [2022-11-16 11:41:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:19,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:41:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:41:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:41:19,347 INFO L87 Difference]: Start difference. First operand 1207 states and 1681 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-16 11:41:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:20,932 INFO L93 Difference]: Finished difference Result 1234 states and 1732 transitions. [2022-11-16 11:41:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:41:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 229 [2022-11-16 11:41:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:20,940 INFO L225 Difference]: With dead ends: 1234 [2022-11-16 11:41:20,941 INFO L226 Difference]: Without dead ends: 1232 [2022-11-16 11:41:20,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:41:20,943 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 146 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:20,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 719 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:41:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-11-16 11:41:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1221. [2022-11-16 11:41:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 790 states have (on average 1.1215189873417721) internal successors, (886), 814 states have internal predecessors, (886), 327 states have call successors, (327), 85 states have call predecessors, (327), 103 states have return successors, (486), 326 states have call predecessors, (486), 325 states have call successors, (486) [2022-11-16 11:41:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1699 transitions. [2022-11-16 11:41:21,190 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1699 transitions. Word has length 229 [2022-11-16 11:41:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1699 transitions. [2022-11-16 11:41:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-16 11:41:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1699 transitions. [2022-11-16 11:41:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-16 11:41:21,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:21,196 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:41:21,196 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1208449886, now seen corresponding path program 2 times [2022-11-16 11:41:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:21,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861254400] [2022-11-16 11:41:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:41:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:41:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:41:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:41:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:41:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:41:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:41:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:41:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:41:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:41:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:41:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:41:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:41:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:41:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:41:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:41:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 11:41:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:41:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:41:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-16 11:41:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:41:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:41:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-16 11:41:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 64 proven. 48 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-16 11:41:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861254400] [2022-11-16 11:41:23,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861254400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906091455] [2022-11-16 11:41:23,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:41:23,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:23,803 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:23,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e0f025-969d-4e52-819a-e7e7590afb38/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:41:24,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:41:24,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:24,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 223 conjunts are in the unsatisfiable core [2022-11-16 11:41:24,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:24,861 INFO L350 Elim1Store]: Elim1 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 8 [2022-11-16 11:41:24,994 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:41:28,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:41:28,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:41:30,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 11:41:30,722 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 11:41:30,730 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimArr_3 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_3) |c_#memory_$Pointer$.base|) (not (= (select v_arrayElimArr_3 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) (exists ((v_arrayElimArr_2 (Array Int Int))) (and (<= (mod (select v_arrayElimArr_2 (+ 16 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 18446744073709551616) 36028797018963967) (= (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_2) |c_#memory_int|)))) is different from true [2022-11-16 11:41:30,754 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:41:30,771 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 19 [2022-11-16 11:41:34,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:41:34,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:41:36,656 WARN L855 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_ArrVal_6228_40 Int) (v_ArrVal_6233 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int) (aux_div_v_ArrVal_6228_40 Int) (v_ArrVal_6231 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_ArrVal_6233)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| (+ aux_mod_v_ArrVal_6228_40 (* 18446744073709551616 aux_div_v_ArrVal_6228_40))) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_6231)) |c_#memory_int|) (<= 0 aux_mod_v_ArrVal_6228_40) (< aux_mod_v_ArrVal_6228_40 (mod |c_save_byte_from_array_#in~size#1| 18446744073709551616)))) is different from true [2022-11-16 11:41:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:36,753 INFO L321 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2022-11-16 11:41:36,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 65 [2022-11-16 11:41:36,813 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 11:41:36,813 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 27 treesize of output 40 [2022-11-16 11:41:36,868 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-11-16 11:41:36,881 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-11-16 11:41:37,301 INFO L321 Elim1Store]: treesize reduction 54, result has 26.0 percent of original size [2022-11-16 11:41:37,301 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 107 treesize of output 118 [2022-11-16 11:41:37,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 11:41:37,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:37,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:37,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:37,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:37,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:41:37,400 INFO L321 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2022-11-16 11:41:37,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 113 [2022-11-16 11:41:37,556 INFO L350 Elim1Store]: Elim1 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 106 treesize of output 102 [2022-11-16 11:41:40,700 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse3 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse0 (select .cse3 0)) (.cse2 (select .cse3 16)) (.cse1 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|))) (and (<= (+ 18446744073709551616 (* 18446744073709551616 (div (+ .cse0 (- 18446744073709551615)) 18446744073709551616))) .cse0) (= (select .cse1 0) .cse0) (<= (mod .cse2 18446744073709551616) 36028797018963967) (= .cse2 (select .cse1 16)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|) 8) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)))))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35| Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|) 8) 0)) (exists ((|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse7 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse4 (select .cse7 0)) (.cse5 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|)) (.cse6 (select .cse7 16))) (and (<= (+ 18446744073709551616 (* 18446744073709551616 (div (+ .cse4 (- 18446744073709551615)) 18446744073709551616))) .cse4) (= (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|) 8)) (= (select .cse5 16) .cse6) (= .cse4 (select .cse5 0)) (<= (mod .cse6 18446744073709551616) 36028797018963967) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|)))))) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|) 0) 18446744073709551616) 0))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse13 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse8 (select .cse13 0)) (.cse11 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|)) (.cse12 (select .cse13 16))) (and (let ((.cse9 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|) 0))) (<= (+ (* 18446744073709551616 (div .cse8 18446744073709551616)) 18446744073709551616 (* 18446744073709551616 (div (+ .cse9 (- .cse8)) 18446744073709551616))) .cse9)) (= .cse10 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|) 8)) (= (select .cse11 16) .cse12) (not (= .cse10 0)) (= .cse8 (select .cse11 0)) (<= (mod .cse12 18446744073709551616) 36028797018963967))))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse18 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse15 (select .cse18 0)) (.cse17 (select .cse18 16)) (.cse14 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|)) (.cse16 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8))) (and (= (select .cse14 0) .cse15) (<= (+ (* 18446744073709551616 (div .cse15 18446744073709551616)) 1) .cse15) (not (= .cse16 0)) (<= (mod .cse17 18446744073709551616) 36028797018963967) (= .cse17 (select .cse14 16)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_13|) 8) .cse16)))))) is different from true [2022-11-16 11:41:45,789 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse4 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse3 (select .cse4 16)) (.cse1 (select .cse4 0)) (.cse2 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|))) (and (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|) 8)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|)) (<= (+ (* 18446744073709551616 (div .cse1 18446744073709551616)) 1) .cse1) (not (= .cse0 0)) (= (select .cse2 16) .cse3) (<= (mod .cse3 18446744073709551616) 36028797018963967) (= .cse1 (select .cse2 0)))))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36| Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|) 8) 0)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|) 0) 18446744073709551616) 0) (exists ((|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse8 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse5 (select .cse8 0)) (.cse6 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36|)) (.cse7 (select .cse8 16))) (and (= .cse5 (select .cse6 0)) (<= (+ 18446744073709551616 (* 18446744073709551616 (div (+ .cse5 (- 18446744073709551615)) 18446744073709551616))) .cse5) (= (select .cse6 16) .cse7) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36|) 8)) (<= (mod .cse7 18446744073709551616) 36028797018963967))))))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse12 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse11 (select .cse12 16)) (.cse9 (select .cse12 0)) (.cse10 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|))) (and (<= (+ 18446744073709551616 (* 18446744073709551616 (div (+ .cse9 (- 18446744073709551615)) 18446744073709551616))) .cse9) (= (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|) 8)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|)) (= (select .cse10 16) .cse11) (<= (mod .cse11 18446744073709551616) 36028797018963967) (= .cse9 (select .cse10 0)))))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse18 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse13 (select .cse18 0)) (.cse15 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36|)) (.cse17 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse16 (select .cse18 16))) (and (let ((.cse14 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_14|) 0))) (<= (+ (* 18446744073709551616 (div .cse13 18446744073709551616)) 18446744073709551616 (* 18446744073709551616 (div (+ (- .cse13) .cse14) 18446744073709551616))) .cse14)) (= .cse13 (select .cse15 0)) (= (select .cse15 16) .cse16) (= .cse17 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_36|) 8)) (not (= .cse17 0)) (<= (mod .cse16 18446744073709551616) 36028797018963967)))))) is different from true [2022-11-16 11:42:26,841 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:43:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 180 proven. 159 refuted. 0 times theorem prover too weak. 33 trivial. 96 not checked. [2022-11-16 11:43:59,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:13,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:13,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2022-11-16 11:44:14,312 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) (.cse8 (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) (.cse9 (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8)) (.cse0 (mod |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_#t~mem1217#1| 18446744073709551616))) (and (forall ((aux_mod_v_ArrVal_6257_40 Int)) (or (<= .cse0 aux_mod_v_ArrVal_6257_40) (forall ((|v_save_byte_from_array_~storage#1.base_97| Int) (aux_div_v_ArrVal_6257_40 Int) (v_ArrVal_6256 Int)) (let ((.cse4 (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_97| (store (store (select |c_#memory_int| |v_save_byte_from_array_~storage#1.base_97|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| (+ (* 18446744073709551616 aux_div_v_ArrVal_6257_40) aux_mod_v_ArrVal_6257_40)) .cse9 v_ArrVal_6256)))) (let ((.cse7 (select .cse4 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) (.cse6 (select .cse7 .cse8))) (or (forall ((v_ArrVal_6255 (Array Int Int)) (v_arrayElimArr_4 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_97| v_ArrVal_6255))) (or (not (= (select v_arrayElimArr_4 8) (select (select .cse1 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) .cse2))) (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32| Int)) (or (not (= (select (select (store .cse1 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32| v_arrayElimArr_4) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) .cse3) 0)) (forall ((v_ArrVal_6236 Int) (v_ArrVal_6234 Int)) (not (< 9223372036854775807 (mod (select (select (store .cse4 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32| (store (store (store (store (select .cse4 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32|) 0 .cse5) 8 v_ArrVal_6236) 16 .cse6) 24 v_ArrVal_6234)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616))))))))) (not (<= (mod .cse5 18446744073709551616) (mod .cse6 18446744073709551616)))))))) (> 0 aux_mod_v_ArrVal_6257_40))) (forall ((aux_mod_v_ArrVal_6257_40 Int)) (or (forall ((|v_save_byte_from_array_~storage#1.base_97| Int) (aux_div_v_ArrVal_6257_40 Int) (v_ArrVal_6256 Int)) (let ((.cse12 (select (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_97| (store (store (select |c_#memory_int| |v_save_byte_from_array_~storage#1.base_97|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| (+ (* 18446744073709551616 aux_div_v_ArrVal_6257_40) aux_mod_v_ArrVal_6257_40)) .cse9 v_ArrVal_6256)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse11 (mod (select .cse12 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) 18446744073709551616))) (or (forall ((v_ArrVal_6255 (Array Int Int)) (v_arrayElimArr_4 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32| Int)) (let ((.cse10 (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_97| v_ArrVal_6255))) (or (not (= (select (select (store .cse10 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_32| v_arrayElimArr_4) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) .cse3) 0)) (not (= (select v_arrayElimArr_4 8) (select (select .cse10 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) .cse2)))))) (not (< 9223372036854775807 .cse11)) (not (<= .cse11 (mod (select .cse12 .cse8) 18446744073709551616))))))) (<= .cse0 aux_mod_v_ArrVal_6257_40) (> 0 aux_mod_v_ArrVal_6257_40))))) is different from false [2022-11-16 11:44:14,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906091455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:44:14,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:44:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 47] total 59 [2022-11-16 11:44:14,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671002728] [2022-11-16 11:44:14,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 11:44:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 11:44:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=5405, Unknown=35, NotChecked=760, Total=6480 [2022-11-16 11:44:14,325 INFO L87 Difference]: Start difference. First operand 1221 states and 1699 transitions. Second operand has 59 states, 51 states have (on average 4.392156862745098) internal successors, (224), 44 states have internal predecessors, (224), 19 states have call successors, (53), 15 states have call predecessors, (53), 18 states have return successors, (50), 17 states have call predecessors, (50), 18 states have call successors, (50) [2022-11-16 11:44:31,385 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|))) (and (exists ((v_arrayElimArr_3 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_3) |c_#memory_$Pointer$.base|) (not (= (select v_arrayElimArr_3 .cse0) 0)))) (exists ((v_arrayElimArr_2 (Array Int Int))) (and (<= (mod (select v_arrayElimArr_2 (+ 16 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 18446744073709551616) 36028797018963967) (= (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_2) |c_#memory_int|))) (not (= (select (select |c_#memory_$Pointer$.base| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base|) .cse0) 0)))) is different from true [2022-11-16 11:45:17,864 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 130 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:45:23,898 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 130 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:45:33,546 WARN L233 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 135 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:45:47,291 WARN L233 SmtUtils]: Spent 13.32s on a formula simplification. DAG size of input: 127 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:46:11,764 WARN L233 SmtUtils]: Spent 13.34s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:46:31,378 WARN L233 SmtUtils]: Spent 15.69s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:46:44,118 WARN L233 SmtUtils]: Spent 12.45s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)