./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro --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 b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b --- 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-8393723 [2022-11-18 19:31:22,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:22,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:22,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:22,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:22,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:22,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:22,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:22,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:22,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:22,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:22,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:22,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:22,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:22,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:22,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:22,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:22,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:22,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:22,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:22,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:22,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:22,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:22,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:22,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:22,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:22,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:22,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:22,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:22,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:22,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:22,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:22,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:22,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:22,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:22,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:22,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:22,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:22,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:22,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:22,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:31:22,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:22,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:22,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:22,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:22,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:22,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:22,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:22,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:22,798 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:22,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:22,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:22,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:22,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:22,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:22,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:22,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:22,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:22,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:22,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:22,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:22,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:22,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:22,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:22,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:22,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:22,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:22,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:22,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:22,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:22,804 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_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b [2022-11-18 19:31:23,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:23,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:23,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:23,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:23,100 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:23,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2022-11-18 19:31:23,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/c38479144/d308b5bf695f4cb4852b5f10573bd902/FLAG2a5400759 [2022-11-18 19:31:24,048 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:24,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2022-11-18 19:31:24,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/c38479144/d308b5bf695f4cb4852b5f10573bd902/FLAG2a5400759 [2022-11-18 19:31:24,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/c38479144/d308b5bf695f4cb4852b5f10573bd902 [2022-11-18 19:31:24,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:24,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:24,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:24,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:24,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:24,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:24" (1/1) ... [2022-11-18 19:31:24,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702a3113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:24, skipping insertion in model container [2022-11-18 19:31:24,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:24" (1/1) ... [2022-11-18 19:31:24,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:24,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:24,617 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2022-11-18 19:31:24,625 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2022-11-18 19:31:25,448 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,448 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,449 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,450 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,451 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,480 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,481 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,483 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,484 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,486 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,487 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,488 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,488 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:25,888 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:31:25,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:31:25,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:31:25,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:31:25,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:31:25,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:31:25,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:31:25,897 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:31:25,898 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:31:25,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:31:26,088 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:31:26,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:26,162 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:26,193 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2022-11-18 19:31:26,194 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2022-11-18 19:31:26,238 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,238 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,239 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,240 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,240 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,249 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,249 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,251 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,251 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,253 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,254 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,254 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,255 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:31:26,293 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:31:26,294 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:31:26,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:31:26,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:31:26,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:31:26,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:31:26,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:31:26,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:31:26,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:31:26,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:31:26,324 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:31:26,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:26,531 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:26,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26 WrapperNode [2022-11-18 19:31:26,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:26,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:26,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:26,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:26,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,635 INFO L138 Inliner]: procedures = 679, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 141 [2022-11-18 19:31:26,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:26,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:26,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:26,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:26,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:26,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:26,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:26,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:26,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (1/1) ... [2022-11-18 19:31:26,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:26,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:26,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:31:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:31:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:31:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-18 19:31:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-18 19:31:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:31:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-18 19:31:26,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-18 19:31:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:31:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:26,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:31:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:31:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:31:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:31:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:31:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 19:31:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 19:31:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:27,145 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:27,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:27,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:27,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:27,488 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:31:27,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:27 BoogieIcfgContainer [2022-11-18 19:31:27,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:27,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:27,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:27,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:27,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:24" (1/3) ... [2022-11-18 19:31:27,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b11141d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:27, skipping insertion in model container [2022-11-18 19:31:27,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:26" (2/3) ... [2022-11-18 19:31:27,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b11141d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:27, skipping insertion in model container [2022-11-18 19:31:27,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:27" (3/3) ... [2022-11-18 19:31:27,510 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2022-11-18 19:31:27,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:27,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:31:27,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:27,626 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;@7fdd60e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:27,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:31:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:31:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:31:27,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:27,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:27,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2022-11-18 19:31:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154952244] [2022-11-18 19:31:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:31:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 19:31:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:31:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:31:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:31:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154952244] [2022-11-18 19:31:28,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154952244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:28,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:28,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:31:28,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829155375] [2022-11-18 19:31:28,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:28,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:31:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:31:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:31:28,553 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:28,611 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2022-11-18 19:31:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:31:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-18 19:31:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:28,623 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:31:28,624 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:31:28,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:31:28,636 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:28,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:31:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 19:31:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 19:31:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2022-11-18 19:31:28,700 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2022-11-18 19:31:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2022-11-18 19:31:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2022-11-18 19:31:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:31:28,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:28,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:28,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2022-11-18 19:31:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:28,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746719717] [2022-11-18 19:31:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:31:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 19:31:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:31:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:31:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:31:29,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:29,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746719717] [2022-11-18 19:31:29,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746719717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:29,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574567268] [2022-11-18 19:31:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:29,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:29,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:31:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:31:29,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:29,785 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 18 treesize of output 19 [2022-11-18 19:31:29,818 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 18 treesize of output 19 [2022-11-18 19:31:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:31:29,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:31:29,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 19:31:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:31:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:31:29,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 19:31:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:31:30,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:30,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574567268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:30,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:30,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2022-11-18 19:31:30,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307669034] [2022-11-18 19:31:30,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:31:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:31:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:31:30,937 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:31:31,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:31,102 INFO L93 Difference]: Finished difference Result 132 states and 179 transitions. [2022-11-18 19:31:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:31:31,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-11-18 19:31:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:31,109 INFO L225 Difference]: With dead ends: 132 [2022-11-18 19:31:31,109 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 19:31:31,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:31:31,115 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 18 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:31,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 285 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-11-18 19:31:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 19:31:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-18 19:31:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 68 states have internal predecessors, (85), 18 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (22), 16 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 19:31:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2022-11-18 19:31:31,147 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 68 [2022-11-18 19:31:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:31,148 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2022-11-18 19:31:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:31:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2022-11-18 19:31:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:31:31,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:31,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:31,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 19:31:31,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1136740586, now seen corresponding path program 1 times [2022-11-18 19:31:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:31,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638960712] [2022-11-18 19:31:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:31:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 19:31:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:31:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:31:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:31:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:31,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638960712] [2022-11-18 19:31:31,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638960712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:31,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360310756] [2022-11-18 19:31:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:31,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:31,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:31,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:31:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:31,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:31:32,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:32,185 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-18 19:31:32,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-18 19:31:32,203 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 19:31:32,225 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 19:31:32,286 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 0 case distinctions, treesize of input 46 treesize of output 19 [2022-11-18 19:31:32,291 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 13 treesize of output 9 [2022-11-18 19:31:32,344 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 21 treesize of output 13 [2022-11-18 19:31:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:31:33,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:33,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360310756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:33,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:33,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2022-11-18 19:31:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425744335] [2022-11-18 19:31:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:31:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:31:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:31:33,385 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:31:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:33,751 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2022-11-18 19:31:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:31:33,752 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-11-18 19:31:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:33,756 INFO L225 Difference]: With dead ends: 233 [2022-11-18 19:31:33,756 INFO L226 Difference]: Without dead ends: 193 [2022-11-18 19:31:33,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:31:33,758 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 128 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:33,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 653 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 92 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-11-18 19:31:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-18 19:31:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2022-11-18 19:31:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 137 states have internal predecessors, (180), 32 states have call successors, (32), 13 states have call predecessors, (32), 16 states have return successors, (50), 30 states have call predecessors, (50), 30 states have call successors, (50) [2022-11-18 19:31:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 262 transitions. [2022-11-18 19:31:33,787 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 262 transitions. Word has length 68 [2022-11-18 19:31:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:33,788 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 262 transitions. [2022-11-18 19:31:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:31:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 262 transitions. [2022-11-18 19:31:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:31:33,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:33,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:33,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:33,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash 743713576, now seen corresponding path program 1 times [2022-11-18 19:31:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479264519] [2022-11-18 19:31:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:31:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 19:31:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:31:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:31:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:31:34,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479264519] [2022-11-18 19:31:34,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479264519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218608275] [2022-11-18 19:31:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:34,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:34,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:34,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:31:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:31:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:34,572 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:34,575 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:34,590 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:34,591 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:35,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:36,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218608275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:36,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:36,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 12] total 28 [2022-11-18 19:31:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642756333] [2022-11-18 19:31:36,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:31:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:31:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:31:36,403 INFO L87 Difference]: Start difference. First operand 181 states and 262 transitions. Second operand has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-18 19:31:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:37,859 INFO L93 Difference]: Finished difference Result 604 states and 962 transitions. [2022-11-18 19:31:37,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:31:37,860 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 68 [2022-11-18 19:31:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:37,870 INFO L225 Difference]: With dead ends: 604 [2022-11-18 19:31:37,870 INFO L226 Difference]: Without dead ends: 438 [2022-11-18 19:31:37,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=289, Invalid=2363, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 19:31:37,881 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 175 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:37,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1916 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 479 Invalid, 0 Unknown, 218 Unchecked, 0.5s Time] [2022-11-18 19:31:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-18 19:31:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 344. [2022-11-18 19:31:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.428030303030303) internal successors, (377), 278 states have internal predecessors, (377), 50 states have call successors, (50), 17 states have call predecessors, (50), 29 states have return successors, (124), 48 states have call predecessors, (124), 48 states have call successors, (124) [2022-11-18 19:31:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 551 transitions. [2022-11-18 19:31:37,990 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 551 transitions. Word has length 68 [2022-11-18 19:31:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:37,991 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 551 transitions. [2022-11-18 19:31:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-18 19:31:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 551 transitions. [2022-11-18 19:31:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 19:31:37,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:37,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:38,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:31:38,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:38,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:38,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2022-11-18 19:31:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:38,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384495780] [2022-11-18 19:31:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:31:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:31:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:31:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:31:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:31:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:38,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384495780] [2022-11-18 19:31:38,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384495780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:38,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168746289] [2022-11-18 19:31:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:38,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:38,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:38,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:38,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:31:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:31:38,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:38,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:38,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168746289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:38,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:38,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-18 19:31:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503036560] [2022-11-18 19:31:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:31:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:31:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:31:38,903 INFO L87 Difference]: Start difference. First operand 344 states and 551 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:39,127 INFO L93 Difference]: Finished difference Result 690 states and 1118 transitions. [2022-11-18 19:31:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-18 19:31:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:39,132 INFO L225 Difference]: With dead ends: 690 [2022-11-18 19:31:39,132 INFO L226 Difference]: Without dead ends: 388 [2022-11-18 19:31:39,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:31:39,134 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 107 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:39,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 243 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:31:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-18 19:31:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 353. [2022-11-18 19:31:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.4169741697416973) internal successors, (384), 287 states have internal predecessors, (384), 50 states have call successors, (50), 17 states have call predecessors, (50), 31 states have return successors, (134), 48 states have call predecessors, (134), 48 states have call successors, (134) [2022-11-18 19:31:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 568 transitions. [2022-11-18 19:31:39,172 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 568 transitions. Word has length 70 [2022-11-18 19:31:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:39,172 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 568 transitions. [2022-11-18 19:31:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 568 transitions. [2022-11-18 19:31:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:31:39,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:39,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:39,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:39,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2022-11-18 19:31:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:39,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551790889] [2022-11-18 19:31:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:31:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:31:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:31:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:31:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:31:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551790889] [2022-11-18 19:31:39,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551790889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281728734] [2022-11-18 19:31:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:39,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:39,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:39,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:31:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:39,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:31:39,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:39,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:39,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281728734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:39,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:39,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2022-11-18 19:31:39,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124057034] [2022-11-18 19:31:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:39,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:31:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:31:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:31:39,955 INFO L87 Difference]: Start difference. First operand 353 states and 568 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:40,301 INFO L93 Difference]: Finished difference Result 762 states and 1259 transitions. [2022-11-18 19:31:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:31:40,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 19:31:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:40,305 INFO L225 Difference]: With dead ends: 762 [2022-11-18 19:31:40,306 INFO L226 Difference]: Without dead ends: 451 [2022-11-18 19:31:40,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:31:40,308 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 147 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:40,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 284 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:31:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-18 19:31:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2022-11-18 19:31:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.4157706093189963) internal successors, (395), 295 states have internal predecessors, (395), 50 states have call successors, (50), 17 states have call predecessors, (50), 31 states have return successors, (134), 48 states have call predecessors, (134), 48 states have call successors, (134) [2022-11-18 19:31:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 579 transitions. [2022-11-18 19:31:40,351 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 579 transitions. Word has length 72 [2022-11-18 19:31:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:40,351 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 579 transitions. [2022-11-18 19:31:40,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 579 transitions. [2022-11-18 19:31:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:31:40,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:40,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:40,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:40,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:31:40,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2022-11-18 19:31:40,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:40,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868449392] [2022-11-18 19:31:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:31:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:31:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 19:31:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 19:31:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:31:40,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:40,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868449392] [2022-11-18 19:31:40,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868449392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:40,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628888471] [2022-11-18 19:31:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:40,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:40,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:40,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:31:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:31:41,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:31:41,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628888471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:41,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:41,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 19:31:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162533271] [2022-11-18 19:31:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:41,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:31:41,028 INFO L87 Difference]: Start difference. First operand 361 states and 579 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:41,075 INFO L93 Difference]: Finished difference Result 711 states and 1211 transitions. [2022-11-18 19:31:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-18 19:31:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:41,079 INFO L225 Difference]: With dead ends: 711 [2022-11-18 19:31:41,079 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 19:31:41,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:31:41,082 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:41,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 162 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 19:31:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 349. [2022-11-18 19:31:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 267 states have (on average 1.400749063670412) internal successors, (374), 281 states have internal predecessors, (374), 52 states have call successors, (52), 17 states have call predecessors, (52), 29 states have return successors, (139), 50 states have call predecessors, (139), 50 states have call successors, (139) [2022-11-18 19:31:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 565 transitions. [2022-11-18 19:31:41,123 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 565 transitions. Word has length 73 [2022-11-18 19:31:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:41,123 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 565 transitions. [2022-11-18 19:31:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 565 transitions. [2022-11-18 19:31:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:31:41,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:41,127 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:41,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:41,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:41,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2022-11-18 19:31:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:41,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379157829] [2022-11-18 19:31:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:31:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:31:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:31:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:31:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:31:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:41,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379157829] [2022-11-18 19:31:41,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379157829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:41,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017112181] [2022-11-18 19:31:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:41,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:41,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:41,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:31:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:41,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 19:31:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:41,995 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:41,996 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:42,013 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:42,014 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:43,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:43,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017112181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:43,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:43,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 10] total 26 [2022-11-18 19:31:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103372527] [2022-11-18 19:31:43,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:31:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:31:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:31:43,749 INFO L87 Difference]: Start difference. First operand 349 states and 565 transitions. Second operand has 26 states, 25 states have (on average 4.64) internal successors, (116), 23 states have internal predecessors, (116), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-18 19:31:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:44,915 INFO L93 Difference]: Finished difference Result 840 states and 1407 transitions. [2022-11-18 19:31:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:31:44,916 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 23 states have internal predecessors, (116), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 81 [2022-11-18 19:31:44,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:44,920 INFO L225 Difference]: With dead ends: 840 [2022-11-18 19:31:44,921 INFO L226 Difference]: Without dead ends: 485 [2022-11-18 19:31:44,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 161 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=1820, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:31:44,924 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 151 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:44,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1174 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 491 Invalid, 0 Unknown, 231 Unchecked, 0.5s Time] [2022-11-18 19:31:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-18 19:31:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 413. [2022-11-18 19:31:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 314 states have (on average 1.3535031847133758) internal successors, (425), 332 states have internal predecessors, (425), 59 states have call successors, (59), 23 states have call predecessors, (59), 39 states have return successors, (203), 57 states have call predecessors, (203), 57 states have call successors, (203) [2022-11-18 19:31:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 687 transitions. [2022-11-18 19:31:44,975 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 687 transitions. Word has length 81 [2022-11-18 19:31:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:44,976 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 687 transitions. [2022-11-18 19:31:44,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 23 states have internal predecessors, (116), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-18 19:31:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 687 transitions. [2022-11-18 19:31:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:31:44,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:44,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:44,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:45,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -377963953, now seen corresponding path program 1 times [2022-11-18 19:31:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:45,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327203683] [2022-11-18 19:31:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:31:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:31:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:31:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:31:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 19:31:45,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:45,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327203683] [2022-11-18 19:31:45,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327203683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027924444] [2022-11-18 19:31:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:45,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:45,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:45,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:45,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:31:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:45,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 19:31:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:45,991 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:45,991 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:46,008 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:31:46,008 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:31:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:31:46,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:31:46,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027924444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:46,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:46,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 21 [2022-11-18 19:31:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945309469] [2022-11-18 19:31:46,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:46,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:31:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:31:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:31:46,683 INFO L87 Difference]: Start difference. First operand 413 states and 687 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-18 19:31:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:47,887 INFO L93 Difference]: Finished difference Result 943 states and 1865 transitions. [2022-11-18 19:31:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:31:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 83 [2022-11-18 19:31:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:47,893 INFO L225 Difference]: With dead ends: 943 [2022-11-18 19:31:47,893 INFO L226 Difference]: Without dead ends: 571 [2022-11-18 19:31:47,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:31:47,898 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 207 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:47,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 777 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 581 Invalid, 0 Unknown, 10 Unchecked, 0.6s Time] [2022-11-18 19:31:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-18 19:31:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 466. [2022-11-18 19:31:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 363 states have (on average 1.3608815426997245) internal successors, (494), 379 states have internal predecessors, (494), 64 states have call successors, (64), 24 states have call predecessors, (64), 38 states have return successors, (197), 62 states have call predecessors, (197), 62 states have call successors, (197) [2022-11-18 19:31:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 755 transitions. [2022-11-18 19:31:47,976 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 755 transitions. Word has length 83 [2022-11-18 19:31:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:47,976 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 755 transitions. [2022-11-18 19:31:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-18 19:31:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 755 transitions. [2022-11-18 19:31:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:31:47,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:47,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:47,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:48,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:31:48,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:48,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1276440817, now seen corresponding path program 1 times [2022-11-18 19:31:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:48,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443090709] [2022-11-18 19:31:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:48,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:31:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:31:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:31:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:31:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:31:48,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443090709] [2022-11-18 19:31:48,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443090709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888111746] [2022-11-18 19:31:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:48,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:48,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:48,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:31:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:31:48,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:31:48,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888111746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:48,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:48,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-18 19:31:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996951112] [2022-11-18 19:31:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:48,585 INFO L87 Difference]: Start difference. First operand 466 states and 755 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:31:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:48,654 INFO L93 Difference]: Finished difference Result 845 states and 1452 transitions. [2022-11-18 19:31:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:48,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-11-18 19:31:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:48,658 INFO L225 Difference]: With dead ends: 845 [2022-11-18 19:31:48,659 INFO L226 Difference]: Without dead ends: 436 [2022-11-18 19:31:48,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:31:48,663 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:48,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-18 19:31:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-11-18 19:31:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 334 states have (on average 1.31437125748503) internal successors, (439), 350 states have internal predecessors, (439), 63 states have call successors, (63), 24 states have call predecessors, (63), 38 states have return successors, (195), 61 states have call predecessors, (195), 61 states have call successors, (195) [2022-11-18 19:31:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 697 transitions. [2022-11-18 19:31:48,714 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 697 transitions. Word has length 83 [2022-11-18 19:31:48,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:48,714 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 697 transitions. [2022-11-18 19:31:48,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:31:48,715 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 697 transitions. [2022-11-18 19:31:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:31:48,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:48,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:48,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:31:48,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash 685133841, now seen corresponding path program 1 times [2022-11-18 19:31:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:48,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36567923] [2022-11-18 19:31:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:31:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:31:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:31:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:31:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 19:31:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36567923] [2022-11-18 19:31:49,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36567923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:49,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447959432] [2022-11-18 19:31:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:49,515 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:49,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:31:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:31:49,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:31:49,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:49,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447959432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:49,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:49,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-18 19:31:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048519603] [2022-11-18 19:31:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:49,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:31:49,743 INFO L87 Difference]: Start difference. First operand 436 states and 697 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:31:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:49,792 INFO L93 Difference]: Finished difference Result 765 states and 1238 transitions. [2022-11-18 19:31:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:49,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-11-18 19:31:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:49,795 INFO L225 Difference]: With dead ends: 765 [2022-11-18 19:31:49,795 INFO L226 Difference]: Without dead ends: 349 [2022-11-18 19:31:49,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:49,799 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:49,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 238 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-18 19:31:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2022-11-18 19:31:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 264 states have (on average 1.1818181818181819) internal successors, (312), 275 states have internal predecessors, (312), 47 states have call successors, (47), 24 states have call predecessors, (47), 33 states have return successors, (103), 45 states have call predecessors, (103), 45 states have call successors, (103) [2022-11-18 19:31:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 462 transitions. [2022-11-18 19:31:49,830 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 462 transitions. Word has length 83 [2022-11-18 19:31:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:49,830 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 462 transitions. [2022-11-18 19:31:49,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:31:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 462 transitions. [2022-11-18 19:31:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:31:49,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:49,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:49,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:50,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:50,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1042621628, now seen corresponding path program 1 times [2022-11-18 19:31:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:50,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43332247] [2022-11-18 19:31:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:50,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:31:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:31:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:31:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:31:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 19:31:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43332247] [2022-11-18 19:31:50,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43332247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:50,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681197549] [2022-11-18 19:31:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:50,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:50,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:31:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:31:50,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:50,770 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 [2022-11-18 19:31:50,776 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 [2022-11-18 19:31:50,783 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 [2022-11-18 19:31:51,438 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 9 treesize of output 5 [2022-11-18 19:31:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:31:52,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:53,783 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 64 treesize of output 60 [2022-11-18 19:31:53,788 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 6 [2022-11-18 19:31:53,792 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 6 [2022-11-18 19:31:53,795 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 6 [2022-11-18 19:31:53,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,808 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 493 treesize of output 477 [2022-11-18 19:31:53,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 557 treesize of output 533 [2022-11-18 19:31:53,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 533 treesize of output 521 [2022-11-18 19:31:53,957 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 107 [2022-11-18 19:31:53,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 90 [2022-11-18 19:31:53,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:31:53,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-11-18 19:31:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:54,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681197549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:54,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:54,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 17] total 39 [2022-11-18 19:31:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423803874] [2022-11-18 19:31:54,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:54,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:31:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:31:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:31:54,195 INFO L87 Difference]: Start difference. First operand 345 states and 462 transitions. Second operand has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-18 19:31:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:57,320 INFO L93 Difference]: Finished difference Result 663 states and 932 transitions. [2022-11-18 19:31:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 19:31:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) Word has length 84 [2022-11-18 19:31:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:57,324 INFO L225 Difference]: With dead ends: 663 [2022-11-18 19:31:57,324 INFO L226 Difference]: Without dead ends: 429 [2022-11-18 19:31:57,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 151 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=455, Invalid=4657, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 19:31:57,328 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 210 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:57,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1460 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1119 Invalid, 0 Unknown, 428 Unchecked, 1.4s Time] [2022-11-18 19:31:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-18 19:31:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 411. [2022-11-18 19:31:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 309 states have (on average 1.1715210355987056) internal successors, (362), 324 states have internal predecessors, (362), 60 states have call successors, (60), 26 states have call predecessors, (60), 41 states have return successors, (156), 60 states have call predecessors, (156), 58 states have call successors, (156) [2022-11-18 19:31:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 578 transitions. [2022-11-18 19:31:57,393 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 578 transitions. Word has length 84 [2022-11-18 19:31:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:57,393 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 578 transitions. [2022-11-18 19:31:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-18 19:31:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 578 transitions. [2022-11-18 19:31:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:31:57,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:57,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:57,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:57,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -155832676, now seen corresponding path program 1 times [2022-11-18 19:31:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:57,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142384732] [2022-11-18 19:31:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:57,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:31:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:31:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:31:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:31:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:31:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142384732] [2022-11-18 19:31:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142384732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664171110] [2022-11-18 19:31:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:58,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:58,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:31:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:31:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:31:58,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:58,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664171110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:58,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:58,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-18 19:31:58,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177899686] [2022-11-18 19:31:58,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:58,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:31:58,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:31:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:31:58,483 INFO L87 Difference]: Start difference. First operand 411 states and 578 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:31:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:58,767 INFO L93 Difference]: Finished difference Result 604 states and 844 transitions. [2022-11-18 19:31:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:31:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2022-11-18 19:31:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:58,770 INFO L225 Difference]: With dead ends: 604 [2022-11-18 19:31:58,771 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 19:31:58,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:31:58,774 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:58,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 286 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:31:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 19:31:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-11-18 19:31:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 262 states have (on average 1.16793893129771) internal successors, (306), 273 states have internal predecessors, (306), 54 states have call successors, (54), 22 states have call predecessors, (54), 33 states have return successors, (122), 54 states have call predecessors, (122), 52 states have call successors, (122) [2022-11-18 19:31:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 482 transitions. [2022-11-18 19:31:58,826 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 482 transitions. Word has length 86 [2022-11-18 19:31:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:58,827 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 482 transitions. [2022-11-18 19:31:58,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:31:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 482 transitions. [2022-11-18 19:31:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:31:58,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:58,830 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:31:58,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:31:59,037 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -941742692, now seen corresponding path program 1 times [2022-11-18 19:31:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:59,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970820746] [2022-11-18 19:31:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:31:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:31:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:31:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:31:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:31:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:31:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:31:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:31:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970820746] [2022-11-18 19:31:59,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970820746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615351682] [2022-11-18 19:31:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:59,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:59,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:59,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:59,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:32:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:00,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:32:00,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:32:00,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:32:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615351682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:00,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 7] total 29 [2022-11-18 19:32:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154731441] [2022-11-18 19:32:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:32:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:32:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:32:00,732 INFO L87 Difference]: Start difference. First operand 350 states and 482 transitions. Second operand has 29 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-18 19:32:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:04,172 INFO L93 Difference]: Finished difference Result 647 states and 889 transitions. [2022-11-18 19:32:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:32:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 97 [2022-11-18 19:32:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:04,176 INFO L225 Difference]: With dead ends: 647 [2022-11-18 19:32:04,177 INFO L226 Difference]: Without dead ends: 459 [2022-11-18 19:32:04,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=607, Invalid=5713, Unknown=0, NotChecked=0, Total=6320 [2022-11-18 19:32:04,181 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 181 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:04,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1638 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:32:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-18 19:32:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 353. [2022-11-18 19:32:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 277 states have (on average 1.1805054151624548) internal successors, (327), 284 states have internal predecessors, (327), 46 states have call successors, (46), 21 states have call predecessors, (46), 29 states have return successors, (80), 47 states have call predecessors, (80), 44 states have call successors, (80) [2022-11-18 19:32:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 453 transitions. [2022-11-18 19:32:04,234 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 453 transitions. Word has length 97 [2022-11-18 19:32:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:04,235 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 453 transitions. [2022-11-18 19:32:04,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-18 19:32:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 453 transitions. [2022-11-18 19:32:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 19:32:04,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:04,237 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:04,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:04,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:32:04,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1743369304, now seen corresponding path program 1 times [2022-11-18 19:32:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272785729] [2022-11-18 19:32:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:32:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:32:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:32:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:32:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:32:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:32:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:32:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:32:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272785729] [2022-11-18 19:32:05,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272785729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409738541] [2022-11-18 19:32:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:05,038 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:05,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:32:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:05,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:32:05,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:32:05,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:32:05,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409738541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:05,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:32:05,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-18 19:32:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014117276] [2022-11-18 19:32:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:05,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:32:05,439 INFO L87 Difference]: Start difference. First operand 353 states and 453 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:32:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:05,639 INFO L93 Difference]: Finished difference Result 798 states and 1051 transitions. [2022-11-18 19:32:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:32:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 100 [2022-11-18 19:32:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:05,642 INFO L225 Difference]: With dead ends: 798 [2022-11-18 19:32:05,642 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 19:32:05,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:32:05,649 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 121 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:05,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 281 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:32:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 19:32:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2022-11-18 19:32:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 225 states have (on average 1.1555555555555554) internal successors, (260), 230 states have internal predecessors, (260), 46 states have call successors, (46), 18 states have call predecessors, (46), 24 states have return successors, (73), 47 states have call predecessors, (73), 44 states have call successors, (73) [2022-11-18 19:32:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 379 transitions. [2022-11-18 19:32:05,693 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 379 transitions. Word has length 100 [2022-11-18 19:32:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:05,694 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 379 transitions. [2022-11-18 19:32:05,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:32:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 379 transitions. [2022-11-18 19:32:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 19:32:05,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:05,697 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:05,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:05,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:32:05,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1982481237, now seen corresponding path program 1 times [2022-11-18 19:32:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:05,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323363350] [2022-11-18 19:32:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:05,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:32:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:32:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:32:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:32:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:32:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:32:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:32:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:32:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:32:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-18 19:32:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323363350] [2022-11-18 19:32:06,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323363350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240581003] [2022-11-18 19:32:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:06,294 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:06,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:32:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-18 19:32:06,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:06,629 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:32:06,629 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:32:06,646 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:32:06,647 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 19:32:08,851 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| Int)) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|) (+ |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| 16))))) is different from true [2022-11-18 19:32:11,022 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (not (= 16 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_46|) 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_46|) 0) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_46|)))) is different from true [2022-11-18 19:32:13,176 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_29| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_29|) 0) 16))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_29| Int)) (not (= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_29| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_29|) 0))))) is different from true [2022-11-18 19:32:23,258 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:32:37,449 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:32:47,563 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:32:55,700 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:33:05,894 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:33:14,037 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:33:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 64 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-18 19:33:14,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 19:33:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240581003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:17,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:17,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 14] total 37 [2022-11-18 19:33:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404450881] [2022-11-18 19:33:17,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:33:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:33:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1000, Unknown=10, NotChecked=198, Total=1332 [2022-11-18 19:33:17,644 INFO L87 Difference]: Start difference. First operand 296 states and 379 transitions. Second operand has 37 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 15 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (25), 12 states have call predecessors, (25), 15 states have call successors, (25) [2022-11-18 19:33:59,289 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:34:09,371 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:34:29,582 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:34:37,650 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:34:59,804 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:35:13,951 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:35:28,033 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:35:46,144 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:36:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:17,863 INFO L93 Difference]: Finished difference Result 618 states and 845 transitions. [2022-11-18 19:36:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:36:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 15 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (25), 12 states have call predecessors, (25), 15 states have call successors, (25) Word has length 110 [2022-11-18 19:36:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:17,867 INFO L225 Difference]: With dead ends: 618 [2022-11-18 19:36:17,867 INFO L226 Difference]: Without dead ends: 409 [2022-11-18 19:36:17,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 247.7s TimeCoverageRelationStatistics Valid=492, Invalid=4010, Unknown=66, NotChecked=402, Total=4970 [2022-11-18 19:36:17,870 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 220 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1291 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:17,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1687 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1674 Invalid, 0 Unknown, 1291 Unchecked, 1.8s Time] [2022-11-18 19:36:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-18 19:36:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 332. [2022-11-18 19:36:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 254 states have (on average 1.1456692913385826) internal successors, (291), 258 states have internal predecessors, (291), 51 states have call successors, (51), 21 states have call predecessors, (51), 26 states have return successors, (74), 52 states have call predecessors, (74), 49 states have call successors, (74) [2022-11-18 19:36:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 416 transitions. [2022-11-18 19:36:17,938 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 416 transitions. Word has length 110 [2022-11-18 19:36:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:17,938 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 416 transitions. [2022-11-18 19:36:17,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 15 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (25), 12 states have call predecessors, (25), 15 states have call successors, (25) [2022-11-18 19:36:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 416 transitions. [2022-11-18 19:36:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 19:36:17,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:17,941 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:36:17,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:36:18,147 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1063573994, now seen corresponding path program 1 times [2022-11-18 19:36:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:18,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920939716] [2022-11-18 19:36:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:36:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:36:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:36:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:36:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:36:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:36:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:36:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:36:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:36:22,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920939716] [2022-11-18 19:36:22,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920939716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258127031] [2022-11-18 19:36:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:22,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:22,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:36:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 131 conjunts are in the unsatisfiable core [2022-11-18 19:36:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:22,478 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 9 treesize of output 12 [2022-11-18 19:36:22,483 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 [2022-11-18 19:36:22,493 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 9 treesize of output 12 [2022-11-18 19:36:22,498 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 [2022-11-18 19:36:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:36:27,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:40,195 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:36:52,432 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:36:53,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:53,961 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 4880 treesize of output 4436 [2022-11-18 19:36:54,251 INFO L321 Elim1Store]: treesize reduction 23, result has 86.1 percent of original size [2022-11-18 19:36:54,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 28781 treesize of output 26288 [2022-11-18 19:36:54,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:54,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 32653 treesize of output 31005 [2022-11-18 19:36:56,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:56,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 30073 treesize of output 28617 [2022-11-18 19:36:57,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:57,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 31964 treesize of output 31558 [2022-11-18 19:36:58,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:58,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 31208 treesize of output 31057 [2022-11-18 19:37:32,378 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 19:37:32,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:32,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:32,579 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-18 19:37:32,583 INFO L158 Benchmark]: Toolchain (without parser) took 368442.40ms. Allocated memory was 151.0MB in the beginning and 966.8MB in the end (delta: 815.8MB). Free memory was 110.5MB in the beginning and 804.1MB in the end (delta: -693.7MB). Peak memory consumption was 599.0MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,584 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:37:32,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2388.11ms. Allocated memory is still 151.0MB. Free memory was 110.1MB in the beginning and 76.4MB in the end (delta: 33.7MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.65ms. Allocated memory is still 151.0MB. Free memory was 76.4MB in the beginning and 70.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,585 INFO L158 Benchmark]: Boogie Preprocessor took 64.13ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 70.9MB in the beginning and 169.5MB in the end (delta: -98.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,585 INFO L158 Benchmark]: RCFGBuilder took 789.37ms. Allocated memory is still 211.8MB. Free memory was 169.5MB in the beginning and 145.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,586 INFO L158 Benchmark]: TraceAbstraction took 365084.08ms. Allocated memory was 211.8MB in the beginning and 966.8MB in the end (delta: 755.0MB). Free memory was 144.3MB in the beginning and 804.1MB in the end (delta: -659.8MB). Peak memory consumption was 572.2MB. Max. memory is 16.1GB. [2022-11-18 19:37:32,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2388.11ms. Allocated memory is still 151.0MB. Free memory was 110.1MB in the beginning and 76.4MB in the end (delta: 33.7MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.65ms. Allocated memory is still 151.0MB. Free memory was 76.4MB in the beginning and 70.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.13ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 70.9MB in the beginning and 169.5MB in the end (delta: -98.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * RCFGBuilder took 789.37ms. Allocated memory is still 211.8MB. Free memory was 169.5MB in the beginning and 145.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 365084.08ms. Allocated memory was 211.8MB in the beginning and 966.8MB in the end (delta: 755.0MB). Free memory was 144.3MB in the beginning and 804.1MB in the end (delta: -659.8MB). Peak memory consumption was 572.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-18 19:37:32,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro --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 b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b --- 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-8393723 [2022-11-18 19:37:35,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:37:35,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:37:35,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:37:35,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:37:35,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:37:35,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:37:35,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:37:35,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:37:35,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:37:35,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:37:35,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:37:35,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:37:35,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:37:35,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:37:35,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:37:35,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:37:35,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:37:35,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:37:35,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:37:35,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:37:35,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:37:35,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:37:35,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:37:35,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:37:35,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:37:35,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:37:35,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:37:35,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:37:35,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:37:35,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:37:35,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:37:35,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:37:35,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:37:35,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:37:35,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:37:35,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:37:35,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:37:35,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:37:35,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:37:35,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:37:35,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 19:37:35,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:37:35,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:37:35,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:37:35,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:37:35,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:37:35,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:37:35,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:37:35,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:37:35,319 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:37:35,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:37:35,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:37:35,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:37:35,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:37:35,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:37:35,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:37:35,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:37:35,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:37:35,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:37:35,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:37:35,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:37:35,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:37:35,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:37:35,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:37:35,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:37:35,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:37:35,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:37:35,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:37:35,327 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:37:35,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:37:35,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:37:35,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:37:35,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:37:35,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:37:35,329 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b [2022-11-18 19:37:35,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:37:35,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:37:35,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:37:35,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:37:35,767 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:37:35,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2022-11-18 19:37:35,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/9d25724f7/fc59617bdff147b284fc7820afd9c1cd/FLAG4304a449a [2022-11-18 19:37:36,722 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:37:36,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2022-11-18 19:37:36,772 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/9d25724f7/fc59617bdff147b284fc7820afd9c1cd/FLAG4304a449a [2022-11-18 19:37:37,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/data/9d25724f7/fc59617bdff147b284fc7820afd9c1cd [2022-11-18 19:37:37,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:37:37,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:37:37,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:37,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:37:37,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:37:37,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:37" (1/1) ... [2022-11-18 19:37:37,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e58d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:37, skipping insertion in model container [2022-11-18 19:37:37,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:37" (1/1) ... [2022-11-18 19:37:37,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:37:37,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:37:37,696 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2022-11-18 19:37:37,704 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2022-11-18 19:37:38,940 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,941 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,941 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,943 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,948 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,965 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,966 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,968 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,968 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,970 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,972 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,973 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:38,973 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,471 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:37:39,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:37:39,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:37:39,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:37:39,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:37:39,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:37:39,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:37:39,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:37:39,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:37:39,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:37:39,636 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:37:39,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:39,689 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:37:39,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:37:39,747 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2022-11-18 19:37:39,748 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2022-11-18 19:37:39,841 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,855 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,856 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,856 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,857 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,865 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,866 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,867 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,879 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,881 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,881 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,882 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,882 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:39,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:37:39,929 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:37:39,930 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:37:39,931 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:37:39,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:37:39,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:37:39,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:37:39,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:37:39,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:37:39,935 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:37:39,969 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:37:39,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:39,991 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:37:40,005 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2022-11-18 19:37:40,006 WARN L234 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_723360b8-518a-45c8-bf41-0a9d04b78524/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2022-11-18 19:37:40,040 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,040 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,041 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,041 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,042 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,049 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,049 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,050 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,051 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,052 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,053 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,053 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,054 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 19:37:40,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 19:37:40,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 19:37:40,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 19:37:40,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 19:37:40,123 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 19:37:40,124 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 19:37:40,124 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 19:37:40,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 19:37:40,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 19:37:40,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 19:37:40,180 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 19:37:40,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:40,642 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:37:40,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40 WrapperNode [2022-11-18 19:37:40,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:40,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:37:40,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:37:40,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:37:40,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,852 INFO L138 Inliner]: procedures = 698, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 142 [2022-11-18 19:37:40,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:37:40,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:37:40,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:37:40,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:37:40,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:37:40,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:37:40,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:37:40,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:37:40,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (1/1) ... [2022-11-18 19:37:40,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:37:40,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:40,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:37:41,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:37:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:37:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:37:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:37:41,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:37:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-18 19:37:41,056 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-18 19:37:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:37:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-18 19:37:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-18 19:37:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:37:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:37:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:37:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:37:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:37:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:37:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:37:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:37:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:37:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 19:37:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 19:37:41,464 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:37:41,466 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:37:41,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:37:41,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:37:41,855 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:37:41,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:37:41 BoogieIcfgContainer [2022-11-18 19:37:41,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:37:41,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:37:41,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:37:41,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:37:41,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:37:37" (1/3) ... [2022-11-18 19:37:41,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b96995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:37:41, skipping insertion in model container [2022-11-18 19:37:41,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:40" (2/3) ... [2022-11-18 19:37:41,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b96995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:37:41, skipping insertion in model container [2022-11-18 19:37:41,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:37:41" (3/3) ... [2022-11-18 19:37:41,866 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2022-11-18 19:37:41,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:37:41,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:37:41,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:37:41,946 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;@1f7a8497, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:37:41,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:37:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:37:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:37:41,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:41,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:41,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2022-11-18 19:37:41,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:41,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013235454] [2022-11-18 19:37:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:41,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:42,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:37:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 19:37:42,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:37:42,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:42,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:42,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013235454] [2022-11-18 19:37:42,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013235454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:42,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:37:42,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234745946] [2022-11-18 19:37:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:37:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:37:42,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:37:42,434 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:42,508 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2022-11-18 19:37:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:37:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-18 19:37:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:42,524 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:37:42,524 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:37:42,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:37:42,537 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:42,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:37:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 19:37:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 19:37:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2022-11-18 19:37:42,614 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2022-11-18 19:37:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:42,615 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2022-11-18 19:37:42,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:42,616 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2022-11-18 19:37:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:37:42,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:42,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:42,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:42,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:42,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2022-11-18 19:37:42,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453020203] [2022-11-18 19:37:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:42,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:42,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:42,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:42,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:37:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:43,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:37:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:37:43,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:43,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453020203] [2022-11-18 19:37:43,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453020203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:43,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:43,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817992228] [2022-11-18 19:37:43,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:43,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:43,309 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:37:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:43,410 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2022-11-18 19:37:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-11-18 19:37:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:43,414 INFO L225 Difference]: With dead ends: 116 [2022-11-18 19:37:43,415 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 19:37:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:37:43,417 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 375 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:37:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 19:37:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-18 19:37:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-18 19:37:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2022-11-18 19:37:43,431 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 68 [2022-11-18 19:37:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:43,431 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2022-11-18 19:37:43,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:37:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2022-11-18 19:37:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 19:37:43,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:43,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:43,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2022-11-18 19:37:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:43,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783646273] [2022-11-18 19:37:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:43,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:37:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:43,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:37:43,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:37:44,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:44,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783646273] [2022-11-18 19:37:44,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783646273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:44,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:44,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012299408] [2022-11-18 19:37:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:44,085 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:44,359 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2022-11-18 19:37:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-18 19:37:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:44,362 INFO L225 Difference]: With dead ends: 121 [2022-11-18 19:37:44,362 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 19:37:44,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:44,364 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 39 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:44,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 283 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:37:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 19:37:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-18 19:37:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 51 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:37:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2022-11-18 19:37:44,398 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 70 [2022-11-18 19:37:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:44,401 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2022-11-18 19:37:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2022-11-18 19:37:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:37:44,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:44,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:44,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:44,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2022-11-18 19:37:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098870769] [2022-11-18 19:37:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:44,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:44,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:44,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:44,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:37:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:44,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:37:44,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:37:45,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:45,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098870769] [2022-11-18 19:37:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098870769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:45,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:45,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:37:45,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914966323] [2022-11-18 19:37:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:37:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:37:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:37:45,122 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:45,593 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2022-11-18 19:37:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:37:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 19:37:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:45,596 INFO L225 Difference]: With dead ends: 136 [2022-11-18 19:37:45,596 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 19:37:45,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:37:45,606 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 69 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:45,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 336 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:37:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 19:37:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-11-18 19:37:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:37:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-11-18 19:37:45,633 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 72 [2022-11-18 19:37:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:45,636 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-11-18 19:37:45,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-11-18 19:37:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:37:45,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:45,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:45,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:45,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2022-11-18 19:37:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:45,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523853053] [2022-11-18 19:37:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:45,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:45,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:37:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:46,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:37:46,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:37:46,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:46,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:46,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523853053] [2022-11-18 19:37:46,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523853053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:46,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:46,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487916203] [2022-11-18 19:37:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:46,292 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:46,584 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-11-18 19:37:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-18 19:37:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:46,586 INFO L225 Difference]: With dead ends: 137 [2022-11-18 19:37:46,586 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 19:37:46,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:46,588 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:46,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 276 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:37:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 19:37:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2022-11-18 19:37:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:37:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2022-11-18 19:37:46,604 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 73 [2022-11-18 19:37:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:46,604 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2022-11-18 19:37:46,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:37:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2022-11-18 19:37:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:37:46,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:46,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:46,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:46,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2022-11-18 19:37:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:46,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91366879] [2022-11-18 19:37:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:46,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:46,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:46,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:37:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:37:47,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:37:47,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:47,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91366879] [2022-11-18 19:37:47,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91366879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:47,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:47,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:37:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866179838] [2022-11-18 19:37:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:47,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:37:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:47,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:37:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:37:47,179 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:37:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:47,301 INFO L93 Difference]: Finished difference Result 136 states and 183 transitions. [2022-11-18 19:37:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:37:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2022-11-18 19:37:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:47,312 INFO L225 Difference]: With dead ends: 136 [2022-11-18 19:37:47,312 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 19:37:47,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:47,318 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 4 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:47,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 463 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:37:47,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 19:37:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2022-11-18 19:37:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:37:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2022-11-18 19:37:47,348 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 81 [2022-11-18 19:37:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:47,348 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2022-11-18 19:37:47,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:37:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2022-11-18 19:37:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:37:47,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:47,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:47,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:47,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 431382673, now seen corresponding path program 1 times [2022-11-18 19:37:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:47,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971266220] [2022-11-18 19:37:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:47,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:47,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:37:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:37:47,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:50,269 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|))))) is different from true [2022-11-18 19:37:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:37:50,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 19:37:51,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:51,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971266220] [2022-11-18 19:37:51,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971266220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:51,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:51,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-18 19:37:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856862683] [2022-11-18 19:37:51,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:37:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:37:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2022-11-18 19:37:51,135 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 19:37:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:52,398 INFO L93 Difference]: Finished difference Result 177 states and 255 transitions. [2022-11-18 19:37:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:37:52,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2022-11-18 19:37:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:52,402 INFO L225 Difference]: With dead ends: 177 [2022-11-18 19:37:52,402 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 19:37:52,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=62, Invalid=181, Unknown=1, NotChecked=28, Total=272 [2022-11-18 19:37:52,404 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 102 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 548 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 0 Unknown, 232 Unchecked, 0.8s Time] [2022-11-18 19:37:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 19:37:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 90. [2022-11-18 19:37:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 70 states have internal predecessors, (87), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-18 19:37:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 120 transitions. [2022-11-18 19:37:52,435 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 120 transitions. Word has length 83 [2022-11-18 19:37:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:52,436 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 120 transitions. [2022-11-18 19:37:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 19:37:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 120 transitions. [2022-11-18 19:37:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:37:52,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:52,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:52,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:52,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:52,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 13986067, now seen corresponding path program 1 times [2022-11-18 19:37:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:52,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160153840] [2022-11-18 19:37:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:52,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:52,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:52,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:37:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:52,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:37:52,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:37:52,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:52,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160153840] [2022-11-18 19:37:52,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160153840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:52,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:52,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363744304] [2022-11-18 19:37:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:52,941 INFO L87 Difference]: Start difference. First operand 90 states and 120 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:37:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:52,997 INFO L93 Difference]: Finished difference Result 169 states and 237 transitions. [2022-11-18 19:37:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-11-18 19:37:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:53,000 INFO L225 Difference]: With dead ends: 169 [2022-11-18 19:37:53,000 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 19:37:53,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:53,002 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:53,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 19:37:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2022-11-18 19:37:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 70 states have internal predecessors, (86), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-18 19:37:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2022-11-18 19:37:53,020 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 83 [2022-11-18 19:37:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:53,021 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2022-11-18 19:37:53,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:37:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2022-11-18 19:37:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:37:53,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:53,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:53,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:53,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:53,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1975560725, now seen corresponding path program 1 times [2022-11-18 19:37:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:53,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072977098] [2022-11-18 19:37:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:53,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:53,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:53,243 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:53,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:37:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:53,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:37:53,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:37:53,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:53,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:53,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072977098] [2022-11-18 19:37:53,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072977098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:53,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:53,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:37:53,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156642715] [2022-11-18 19:37:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:53,549 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:37:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:53,640 INFO L93 Difference]: Finished difference Result 167 states and 233 transitions. [2022-11-18 19:37:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:37:53,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-11-18 19:37:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:53,644 INFO L225 Difference]: With dead ends: 167 [2022-11-18 19:37:53,645 INFO L226 Difference]: Without dead ends: 91 [2022-11-18 19:37:53,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:53,648 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 6 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 315 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-18 19:37:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2022-11-18 19:37:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.25) internal successors, (80), 67 states have internal predecessors, (80), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-18 19:37:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2022-11-18 19:37:53,674 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 83 [2022-11-18 19:37:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:53,674 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2022-11-18 19:37:53,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:37:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2022-11-18 19:37:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:37:53,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:53,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:37:53,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:53,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:53,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash -233275002, now seen corresponding path program 1 times [2022-11-18 19:37:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:53,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308270036] [2022-11-18 19:37:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:53,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:53,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:53,893 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:53,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:37:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:54,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:54,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:37:56,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:59,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:37:59,629 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 30 treesize of output 29 [2022-11-18 19:37:59,674 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 19:37:59,674 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 [2022-11-18 19:37:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:37:59,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:59,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308270036] [2022-11-18 19:37:59,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308270036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:59,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:59,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2022-11-18 19:37:59,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723980288] [2022-11-18 19:37:59,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:37:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:59,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:37:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:37:59,753 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 19:38:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:01,456 INFO L93 Difference]: Finished difference Result 182 states and 234 transitions. [2022-11-18 19:38:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:38:01,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 84 [2022-11-18 19:38:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:01,459 INFO L225 Difference]: With dead ends: 182 [2022-11-18 19:38:01,459 INFO L226 Difference]: Without dead ends: 108 [2022-11-18 19:38:01,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:38:01,461 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 88 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:01,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 536 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 205 Invalid, 0 Unknown, 99 Unchecked, 0.9s Time] [2022-11-18 19:38:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-18 19:38:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2022-11-18 19:38:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 70 states have internal predecessors, (82), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-18 19:38:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-11-18 19:38:01,477 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 84 [2022-11-18 19:38:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:01,478 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-11-18 19:38:01,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 19:38:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-11-18 19:38:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:38:01,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:01,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:01,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:01,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:01,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash -980582014, now seen corresponding path program 1 times [2022-11-18 19:38:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:01,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795036902] [2022-11-18 19:38:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:01,694 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:01,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:38:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:02,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:38:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:02,244 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 [2022-11-18 19:38:02,252 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 6 treesize of output 5 [2022-11-18 19:38:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:38:03,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:03,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795036902] [2022-11-18 19:38:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795036902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:03,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:03,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:38:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929647930] [2022-11-18 19:38:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:38:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:38:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:38:03,885 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:38:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:04,376 INFO L93 Difference]: Finished difference Result 237 states and 304 transitions. [2022-11-18 19:38:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:38:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 84 [2022-11-18 19:38:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:04,380 INFO L225 Difference]: With dead ends: 237 [2022-11-18 19:38:04,380 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 19:38:04,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:38:04,382 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 39 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:04,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 403 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 60 Unchecked, 0.3s Time] [2022-11-18 19:38:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 19:38:04,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2022-11-18 19:38:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 113 states have (on average 1.247787610619469) internal successors, (141), 118 states have internal predecessors, (141), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (26), 17 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-18 19:38:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 186 transitions. [2022-11-18 19:38:04,416 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 186 transitions. Word has length 84 [2022-11-18 19:38:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:04,417 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 186 transitions. [2022-11-18 19:38:04,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:38:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 186 transitions. [2022-11-18 19:38:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:38:04,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:04,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:04,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:04,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1490055104, now seen corresponding path program 1 times [2022-11-18 19:38:04,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:04,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619754084] [2022-11-18 19:38:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:04,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:04,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:04,641 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:04,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:38:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:04,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:38:04,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:38:07,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:11,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:38:11,803 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 30 treesize of output 29 [2022-11-18 19:38:11,853 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 19:38:11,853 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 [2022-11-18 19:38:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:38:11,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619754084] [2022-11-18 19:38:11,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619754084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:11,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:11,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2022-11-18 19:38:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637833631] [2022-11-18 19:38:11,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:11,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:38:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:38:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:38:11,906 INFO L87 Difference]: Start difference. First operand 147 states and 186 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 19:38:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:17,302 INFO L93 Difference]: Finished difference Result 302 states and 387 transitions. [2022-11-18 19:38:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:38:17,304 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 84 [2022-11-18 19:38:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:17,307 INFO L225 Difference]: With dead ends: 302 [2022-11-18 19:38:17,308 INFO L226 Difference]: Without dead ends: 205 [2022-11-18 19:38:17,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=329, Invalid=1477, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 19:38:17,331 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 199 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:17,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 795 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 511 Invalid, 0 Unknown, 256 Unchecked, 2.3s Time] [2022-11-18 19:38:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-18 19:38:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-11-18 19:38:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 145 states have (on average 1.2206896551724138) internal successors, (177), 151 states have internal predecessors, (177), 25 states have call successors, (25), 14 states have call predecessors, (25), 18 states have return successors, (44), 23 states have call predecessors, (44), 24 states have call successors, (44) [2022-11-18 19:38:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 246 transitions. [2022-11-18 19:38:17,378 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 246 transitions. Word has length 84 [2022-11-18 19:38:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 246 transitions. [2022-11-18 19:38:17,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 19:38:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 246 transitions. [2022-11-18 19:38:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:38:17,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:17,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:17,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:17,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:17,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1467422850, now seen corresponding path program 1 times [2022-11-18 19:38:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:17,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746371519] [2022-11-18 19:38:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:17,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:17,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:17,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:38:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:38:17,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:19,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:20,501 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 [2022-11-18 19:38:22,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:38:22,795 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 17 treesize of output 20 [2022-11-18 19:38:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:38:23,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:23,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746371519] [2022-11-18 19:38:23,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746371519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:23,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:23,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2022-11-18 19:38:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543090210] [2022-11-18 19:38:23,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:38:23,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:38:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=569, Unknown=1, NotChecked=0, Total=650 [2022-11-18 19:38:23,283 INFO L87 Difference]: Start difference. First operand 189 states and 246 transitions. Second operand has 26 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-18 19:38:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:26,976 INFO L93 Difference]: Finished difference Result 434 states and 628 transitions. [2022-11-18 19:38:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:38:26,977 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) Word has length 84 [2022-11-18 19:38:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:26,980 INFO L225 Difference]: With dead ends: 434 [2022-11-18 19:38:26,981 INFO L226 Difference]: Without dead ends: 328 [2022-11-18 19:38:26,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=223, Invalid=1336, Unknown=1, NotChecked=0, Total=1560 [2022-11-18 19:38:26,983 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 163 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:26,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1013 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 654 Invalid, 0 Unknown, 151 Unchecked, 2.3s Time] [2022-11-18 19:38:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-18 19:38:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 270. [2022-11-18 19:38:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 212 states have internal predecessors, (243), 41 states have call successors, (41), 18 states have call predecessors, (41), 25 states have return successors, (98), 39 states have call predecessors, (98), 40 states have call successors, (98) [2022-11-18 19:38:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 382 transitions. [2022-11-18 19:38:27,050 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 382 transitions. Word has length 84 [2022-11-18 19:38:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:27,051 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 382 transitions. [2022-11-18 19:38:27,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 8 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-18 19:38:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 382 transitions. [2022-11-18 19:38:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:38:27,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:27,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:27,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:27,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:27,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1192663236, now seen corresponding path program 1 times [2022-11-18 19:38:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:27,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384615677] [2022-11-18 19:38:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:27,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:27,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:27,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:27,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:38:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:38:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:38:27,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:27,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:27,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384615677] [2022-11-18 19:38:27,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384615677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:27,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:27,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:38:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436584748] [2022-11-18 19:38:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:38:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:38:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:38:27,642 INFO L87 Difference]: Start difference. First operand 270 states and 382 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:38:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:27,830 INFO L93 Difference]: Finished difference Result 576 states and 832 transitions. [2022-11-18 19:38:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:38:27,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 84 [2022-11-18 19:38:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:27,846 INFO L225 Difference]: With dead ends: 576 [2022-11-18 19:38:27,847 INFO L226 Difference]: Without dead ends: 230 [2022-11-18 19:38:27,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:27,851 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 36 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:27,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 408 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-18 19:38:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2022-11-18 19:38:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 177 states have internal predecessors, (199), 35 states have call successors, (35), 17 states have call predecessors, (35), 22 states have return successors, (73), 33 states have call predecessors, (73), 34 states have call successors, (73) [2022-11-18 19:38:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 307 transitions. [2022-11-18 19:38:27,945 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 307 transitions. Word has length 84 [2022-11-18 19:38:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:27,946 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 307 transitions. [2022-11-18 19:38:27,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:38:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 307 transitions. [2022-11-18 19:38:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:38:27,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:27,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:27,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:28,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -20971104, now seen corresponding path program 1 times [2022-11-18 19:38:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:28,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269362515] [2022-11-18 19:38:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:28,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:28,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:28,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:28,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:38:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:28,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:38:28,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:38:28,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:28,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:28,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269362515] [2022-11-18 19:38:28,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269362515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:28,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:28,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:38:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140653114] [2022-11-18 19:38:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:28,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:38:28,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:38:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:28,589 INFO L87 Difference]: Start difference. First operand 228 states and 307 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:38:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:28,950 INFO L93 Difference]: Finished difference Result 341 states and 469 transitions. [2022-11-18 19:38:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:38:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2022-11-18 19:38:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:28,953 INFO L225 Difference]: With dead ends: 341 [2022-11-18 19:38:28,953 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 19:38:28,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:38:28,955 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:28,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 322 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:38:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 19:38:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-11-18 19:38:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 174 states have internal predecessors, (195), 35 states have call successors, (35), 17 states have call predecessors, (35), 21 states have return successors, (68), 33 states have call predecessors, (68), 34 states have call successors, (68) [2022-11-18 19:38:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 298 transitions. [2022-11-18 19:38:29,000 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 298 transitions. Word has length 86 [2022-11-18 19:38:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:29,001 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 298 transitions. [2022-11-18 19:38:29,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:38:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 298 transitions. [2022-11-18 19:38:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:38:29,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:29,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:29,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:29,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:29,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash 428580672, now seen corresponding path program 1 times [2022-11-18 19:38:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:29,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841158204] [2022-11-18 19:38:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:29,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:29,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:29,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:38:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:29,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:38:29,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:29,917 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-18 19:38:29,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-18 19:38:29,933 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 19:38:29,981 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 19:38:30,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:38:30,022 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 63 treesize of output 13 [2022-11-18 19:38:30,029 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 13 treesize of output 9 [2022-11-18 19:38:30,529 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse0 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse1)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse1))))) is different from true [2022-11-18 19:38:31,414 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse2 (bvadd (_ bv24 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2))) (or (and (not (= .cse0 (_ bv0 64))) (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse0)) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select v_DerPreprocessor_3 .cse2))) (and (not (= (_ bv0 64) .cse1)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse0 .cse1))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse3 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse3 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse3 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse3) (select |c_#memory_$Pointer$.base| .cse3)) (= .cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse4)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse4))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|)) is different from true [2022-11-18 19:38:31,495 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse0 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse0) (select |c_#memory_$Pointer$.base| .cse0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse1)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse1))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse3 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse3))))))) is different from true [2022-11-18 19:38:31,818 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse2 (bvadd (_ bv24 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2))) (or (and (not (= .cse0 (_ bv0 64))) (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse0)) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select v_DerPreprocessor_3 .cse2))) (and (not (= (_ bv0 64) .cse1)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse0 .cse1))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse3 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse3 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse3 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse3) (select |c_#memory_$Pointer$.base| .cse3)) (= .cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse4)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse4))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse5 (_ bv0 64))) (= .cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse5 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse5 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse5) (select |c_#memory_$Pointer$.base| .cse5))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse6 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse6))))))) is different from true [2022-11-18 19:38:32,450 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:32,617 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_aws_linked_list_is_valid_#in~list#1.offset| |c_aws_linked_list_is_valid_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (= |c_aws_linked_list_is_valid_#in~list#1.base| |c_aws_linked_list_is_valid_~list#1.base|) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:33,347 WARN L859 $PredicateComparison]: unable to prove that (and (or |c_aws_linked_list_is_valid_#t~short301#1| (= (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd |c_aws_linked_list_is_valid_#in~list#1.offset| (_ bv24 64))) (_ bv0 64))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:33,513 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (or |c_aws_linked_list_is_valid_#t~short303#1| (= (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd |c_aws_linked_list_is_valid_#in~list#1.offset| (_ bv24 64))) (_ bv0 64))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:33,693 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (= (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd |c_aws_linked_list_is_valid_#in~list#1.offset| (_ bv24 64))) (_ bv0 64)) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 11 not checked. [2022-11-18 19:38:34,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:35,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:38:35,179 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 124 treesize of output 127 [2022-11-18 19:38:35,184 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 136 treesize of output 128 [2022-11-18 19:38:35,207 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 128 treesize of output 124 [2022-11-18 19:38:35,350 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 [2022-11-18 19:38:35,367 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 22 treesize of output 18 [2022-11-18 19:38:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 19:38:35,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:35,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841158204] [2022-11-18 19:38:35,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841158204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:35,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:35,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2022-11-18 19:38:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304730440] [2022-11-18 19:38:35,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:38:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:38:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=172, Unknown=18, NotChecked=306, Total=552 [2022-11-18 19:38:35,734 INFO L87 Difference]: Start difference. First operand 225 states and 298 transitions. Second operand has 24 states, 20 states have (on average 5.6) internal successors, (112), 21 states have internal predecessors, (112), 10 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 19:38:36,447 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv24 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3))) (let ((.cse0 (and (not (= .cse2 (_ bv0 64))) (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse2)))) (and (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (or .cse0 (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select v_DerPreprocessor_3 .cse3))) (and (not (= (_ bv0 64) .cse1)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse2 .cse1))))) (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset|) (not (= (_ bv0 64) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select v_DerPreprocessor_3 .cse3))) (and (not (= (_ bv0 64) .cse4)) (not (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse4)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4)) (= .cse2 .cse4)))) .cse0))))) is different from true [2022-11-18 19:38:37,463 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd |c_aws_linked_list_is_valid_#in~list#1.offset| (_ bv24 64))) (_ bv0 64)))) (and (or |c_aws_linked_list_is_valid_#t~short301#1| .cse0) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse2))))) (or (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_~list#1.base|) (bvadd (_ bv24 64) |c_aws_linked_list_is_valid_~list#1.offset|)))) .cse0) (or |c_aws_linked_list_is_valid_#t~short303#1| .cse0))) is different from true [2022-11-18 19:38:37,719 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv24 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3))) (let ((.cse0 (not (= .cse1 (_ bv0 64))))) (and .cse0 (or (and .cse0 (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse1)) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select v_DerPreprocessor_3 .cse3))) (and (not (= (_ bv0 64) .cse2)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse1 .cse2))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4)) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse5))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))))) is different from true [2022-11-18 19:38:37,826 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv24 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3))) (let ((.cse0 (not (= .cse1 (_ bv0 64))))) (and .cse0 (or (and .cse0 (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse1)) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select v_DerPreprocessor_3 .cse3))) (and (not (= (_ bv0 64) .cse2)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse1 .cse2))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4)) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse5))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse6 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse6 (_ bv0 64))) (= .cse6 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse6) (select |c_#memory_$Pointer$.base| .cse6))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse7 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse7)))))))))) is different from true [2022-11-18 19:38:38,093 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_aws_linked_list_is_valid_#in~list#1.offset| |c_aws_linked_list_is_valid_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64)))) (and (= .cse0 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (not (= (_ bv0 64) .cse0))))) (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| (_ BitVec 64))) (let ((.cse1 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse1 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10| v_DerPreprocessor_3) .cse1) (select |c_#memory_$Pointer$.base| .cse1)) (= .cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_10|) (_ bv24 64))))))) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse2 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse2 (_ bv0 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_3) .cse2) (select |c_#memory_$Pointer$.base| .cse2)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_35| .cse3))))) (or (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_~list#1.base|) (bvadd (_ bv24 64) |c_aws_linked_list_is_valid_~list#1.offset|)))) (= (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd |c_aws_linked_list_is_valid_#in~list#1.offset| (_ bv24 64))) (_ bv0 64))) (= |c_aws_linked_list_is_valid_#in~list#1.base| |c_aws_linked_list_is_valid_~list#1.base|) (or (exists ((v_DerPreprocessor_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse4 (select v_DerPreprocessor_3 (_ bv24 64)))) (and (not (= .cse4 (_ bv0 64))) (= .cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64))) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| v_DerPreprocessor_3) .cse4) (select |c_#memory_$Pointer$.base| .cse4))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (_ bv24 64)))) (and (= .cse5 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_36|) (not (= (_ bv0 64) .cse5))))))) is different from true [2022-11-18 19:38:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:39,263 INFO L93 Difference]: Finished difference Result 501 states and 736 transitions. [2022-11-18 19:38:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:38:39,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 5.6) internal successors, (112), 21 states have internal predecessors, (112), 10 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) Word has length 86 [2022-11-18 19:38:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:39,270 INFO L225 Difference]: With dead ends: 501 [2022-11-18 19:38:39,270 INFO L226 Difference]: Without dead ends: 393 [2022-11-18 19:38:39,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=99, Invalid=345, Unknown=32, NotChecked=714, Total=1190 [2022-11-18 19:38:39,275 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2196 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:39,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 737 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 387 Invalid, 0 Unknown, 2196 Unchecked, 2.1s Time] [2022-11-18 19:38:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-18 19:38:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 350. [2022-11-18 19:38:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 258 states have (on average 1.1705426356589148) internal successors, (302), 266 states have internal predecessors, (302), 61 states have call successors, (61), 24 states have call predecessors, (61), 30 states have return successors, (102), 59 states have call predecessors, (102), 60 states have call successors, (102) [2022-11-18 19:38:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 465 transitions. [2022-11-18 19:38:39,403 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 465 transitions. Word has length 86 [2022-11-18 19:38:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:39,403 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 465 transitions. [2022-11-18 19:38:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 5.6) internal successors, (112), 21 states have internal predecessors, (112), 10 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 19:38:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 465 transitions. [2022-11-18 19:38:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:38:39,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:39,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:38:39,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:39,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:39,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -806881120, now seen corresponding path program 1 times [2022-11-18 19:38:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93178244] [2022-11-18 19:38:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:39,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:39,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:39,610 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:39,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 19:38:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:39,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:38:39,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:09,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:32,139 INFO L321 Elim1Store]: treesize reduction 17, result has 82.8 percent of original size [2022-11-18 19:39:32,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 129 [2022-11-18 19:39:32,735 INFO L321 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2022-11-18 19:39:32,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 132 [2022-11-18 19:39:38,938 INFO L321 Elim1Store]: treesize reduction 17, result has 82.8 percent of original size [2022-11-18 19:39:38,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 125 [2022-11-18 19:39:39,431 INFO L321 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2022-11-18 19:39:39,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 132 [2022-11-18 19:39:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:39:41,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93178244] [2022-11-18 19:39:41,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93178244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:41,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:41,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21] total 41 [2022-11-18 19:39:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237033220] [2022-11-18 19:39:41,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:39:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:39:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1482, Unknown=14, NotChecked=0, Total=1640 [2022-11-18 19:39:41,050 INFO L87 Difference]: Start difference. First operand 350 states and 465 transitions. Second operand has 41 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 33 states have internal predecessors, (128), 11 states have call successors, (19), 4 states have call predecessors, (19), 11 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-18 19:39:52,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:33,846 WARN L233 SmtUtils]: Spent 20.32s on a formula simplification. DAG size of input: 67 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:40:41,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:44,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:46,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:50,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:50,625 INFO L93 Difference]: Finished difference Result 951 states and 1570 transitions. [2022-11-18 19:40:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:40:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 33 states have internal predecessors, (128), 11 states have call successors, (19), 4 states have call predecessors, (19), 11 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 97 [2022-11-18 19:40:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:50,634 INFO L225 Difference]: With dead ends: 951 [2022-11-18 19:40:50,635 INFO L226 Difference]: Without dead ends: 807 [2022-11-18 19:40:50,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 94.0s TimeCoverageRelationStatistics Valid=370, Invalid=4160, Unknown=26, NotChecked=0, Total=4556 [2022-11-18 19:40:50,638 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 211 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 205 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 1059 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:50,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1645 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1412 Invalid, 5 Unknown, 1059 Unchecked, 18.2s Time] [2022-11-18 19:40:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-18 19:40:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 532. [2022-11-18 19:40:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 392 states have (on average 1.1862244897959184) internal successors, (465), 407 states have internal predecessors, (465), 90 states have call successors, (90), 30 states have call predecessors, (90), 49 states have return successors, (213), 94 states have call predecessors, (213), 89 states have call successors, (213) [2022-11-18 19:40:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 768 transitions. [2022-11-18 19:40:50,824 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 768 transitions. Word has length 97 [2022-11-18 19:40:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:50,824 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 768 transitions. [2022-11-18 19:40:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 33 states have internal predecessors, (128), 11 states have call successors, (19), 4 states have call predecessors, (19), 11 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-18 19:40:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 768 transitions. [2022-11-18 19:40:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:40:50,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:50,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:40:50,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:51,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:51,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash -838641764, now seen corresponding path program 1 times [2022-11-18 19:40:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:51,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827720776] [2022-11-18 19:40:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:51,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:51,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:51,047 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:51,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:40:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:51,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:40:51,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:53,568 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_9|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_9|))))) is different from true [2022-11-18 19:40:59,714 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:05,938 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:12,217 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:18,387 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:41:18,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:18,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827720776] [2022-11-18 19:41:18,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827720776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:18,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:18,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:41:18,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25492988] [2022-11-18 19:41:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=92, Unknown=1, NotChecked=18, Total=132 [2022-11-18 19:41:18,432 INFO L87 Difference]: Start difference. First operand 532 states and 768 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 19:41:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:19,550 INFO L93 Difference]: Finished difference Result 911 states and 1400 transitions. [2022-11-18 19:41:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:41:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2022-11-18 19:41:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:19,556 INFO L225 Difference]: With dead ends: 911 [2022-11-18 19:41:19,556 INFO L226 Difference]: Without dead ends: 564 [2022-11-18 19:41:19,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=39, Invalid=174, Unknown=1, NotChecked=26, Total=240 [2022-11-18 19:41:19,560 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 61 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:19,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 617 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 274 Unchecked, 0.6s Time] [2022-11-18 19:41:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-18 19:41:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 546. [2022-11-18 19:41:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 404 states have (on average 1.1782178217821782) internal successors, (476), 421 states have internal predecessors, (476), 90 states have call successors, (90), 30 states have call predecessors, (90), 51 states have return successors, (213), 94 states have call predecessors, (213), 89 states have call successors, (213) [2022-11-18 19:41:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 779 transitions. [2022-11-18 19:41:19,739 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 779 transitions. Word has length 97 [2022-11-18 19:41:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:19,740 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 779 transitions. [2022-11-18 19:41:19,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 19:41:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 779 transitions. [2022-11-18 19:41:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:41:19,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:19,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:41:19,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:19,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1295849576, now seen corresponding path program 1 times [2022-11-18 19:41:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:19,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992630973] [2022-11-18 19:41:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:19,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:19,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:19,962 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:19,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 19:41:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:41:20,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:41:20,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:41:20,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992630973] [2022-11-18 19:41:20,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992630973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:20,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:20,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 19:41:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719972018] [2022-11-18 19:41:20,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:20,833 INFO L87 Difference]: Start difference. First operand 546 states and 779 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 19:41:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:21,509 INFO L93 Difference]: Finished difference Result 1000 states and 1451 transitions. [2022-11-18 19:41:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:41:21,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2022-11-18 19:41:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:21,514 INFO L225 Difference]: With dead ends: 1000 [2022-11-18 19:41:21,514 INFO L226 Difference]: Without dead ends: 599 [2022-11-18 19:41:21,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:41:21,517 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 78 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:21,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 541 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-18 19:41:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 448. [2022-11-18 19:41:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 345 states have (on average 1.1942028985507247) internal successors, (412), 356 states have internal predecessors, (412), 60 states have call successors, (60), 25 states have call predecessors, (60), 42 states have return successors, (125), 66 states have call predecessors, (125), 59 states have call successors, (125) [2022-11-18 19:41:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 597 transitions. [2022-11-18 19:41:21,643 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 597 transitions. Word has length 97 [2022-11-18 19:41:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:21,643 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 597 transitions. [2022-11-18 19:41:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 19:41:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 597 transitions. [2022-11-18 19:41:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 19:41:21,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:21,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:41:21,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:21,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:21,862 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash -695722547, now seen corresponding path program 1 times [2022-11-18 19:41:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:21,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723116775] [2022-11-18 19:41:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:21,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:21,865 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:21,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:41:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:22,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:41:22,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:41:22,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:23,573 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 19:41:23,574 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 23 [2022-11-18 19:41:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:41:23,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:23,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723116775] [2022-11-18 19:41:23,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723116775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:23,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:23,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-18 19:41:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330671620] [2022-11-18 19:41:23,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:41:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:41:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:41:23,714 INFO L87 Difference]: Start difference. First operand 448 states and 597 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 19:41:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:26,461 INFO L93 Difference]: Finished difference Result 790 states and 1126 transitions. [2022-11-18 19:41:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:41:26,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2022-11-18 19:41:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:26,466 INFO L225 Difference]: With dead ends: 790 [2022-11-18 19:41:26,466 INFO L226 Difference]: Without dead ends: 525 [2022-11-18 19:41:26,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:41:26,469 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 49 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:26,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 485 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 59 Unchecked, 0.4s Time] [2022-11-18 19:41:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-18 19:41:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 456. [2022-11-18 19:41:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 352 states have (on average 1.1960227272727273) internal successors, (421), 361 states have internal predecessors, (421), 60 states have call successors, (60), 25 states have call predecessors, (60), 43 states have return successors, (128), 69 states have call predecessors, (128), 59 states have call successors, (128) [2022-11-18 19:41:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 609 transitions. [2022-11-18 19:41:26,619 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 609 transitions. Word has length 94 [2022-11-18 19:41:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 609 transitions. [2022-11-18 19:41:26,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 12 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 19:41:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 609 transitions. [2022-11-18 19:41:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 19:41:26,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:26,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:26,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:26,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:26,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1176802805, now seen corresponding path program 1 times [2022-11-18 19:41:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:26,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945331610] [2022-11-18 19:41:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:26,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:26,842 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:26,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 19:41:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:27,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:41:27,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:41:27,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:27,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945331610] [2022-11-18 19:41:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945331610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:27,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:27,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035337012] [2022-11-18 19:41:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:27,118 INFO L87 Difference]: Start difference. First operand 456 states and 609 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:41:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:27,252 INFO L93 Difference]: Finished difference Result 748 states and 1046 transitions. [2022-11-18 19:41:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:27,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-11-18 19:41:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:27,256 INFO L225 Difference]: With dead ends: 748 [2022-11-18 19:41:27,256 INFO L226 Difference]: Without dead ends: 453 [2022-11-18 19:41:27,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:27,259 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:27,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-18 19:41:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 446. [2022-11-18 19:41:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 342 states have (on average 1.154970760233918) internal successors, (395), 353 states have internal predecessors, (395), 60 states have call successors, (60), 25 states have call predecessors, (60), 43 states have return successors, (127), 67 states have call predecessors, (127), 59 states have call successors, (127) [2022-11-18 19:41:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 582 transitions. [2022-11-18 19:41:27,384 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 582 transitions. Word has length 94 [2022-11-18 19:41:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:27,384 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 582 transitions. [2022-11-18 19:41:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:41:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 582 transitions. [2022-11-18 19:41:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:41:27,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:27,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:27,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:27,602 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1850898618, now seen corresponding path program 2 times [2022-11-18 19:41:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272014505] [2022-11-18 19:41:27,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:27,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:27,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:27,604 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:27,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 19:41:27,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:27,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:27,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:41:27,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:27,994 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 [2022-11-18 19:41:27,999 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 6 treesize of output 5 [2022-11-18 19:41:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:41:29,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:29,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:29,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272014505] [2022-11-18 19:41:29,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272014505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:29,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:29,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:41:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684266195] [2022-11-18 19:41:29,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:29,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:29,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:29,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:29,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:29,500 INFO L87 Difference]: Start difference. First operand 446 states and 582 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:41:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:30,105 INFO L93 Difference]: Finished difference Result 683 states and 901 transitions. [2022-11-18 19:41:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:41:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 95 [2022-11-18 19:41:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:30,110 INFO L225 Difference]: With dead ends: 683 [2022-11-18 19:41:30,110 INFO L226 Difference]: Without dead ends: 562 [2022-11-18 19:41:30,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:30,112 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 29 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:30,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 527 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 95 Unchecked, 0.3s Time] [2022-11-18 19:41:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-18 19:41:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 522. [2022-11-18 19:41:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 416 states have internal predecessors, (464), 68 states have call successors, (68), 29 states have call predecessors, (68), 52 states have return successors, (142), 76 states have call predecessors, (142), 67 states have call successors, (142) [2022-11-18 19:41:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 674 transitions. [2022-11-18 19:41:30,260 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 674 transitions. Word has length 95 [2022-11-18 19:41:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:30,260 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 674 transitions. [2022-11-18 19:41:30,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:41:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 674 transitions. [2022-11-18 19:41:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:41:30,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:30,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:30,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:30,485 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1457871608, now seen corresponding path program 3 times [2022-11-18 19:41:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762415609] [2022-11-18 19:41:30,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:30,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:30,487 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:30,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 19:41:30,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:41:30,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:30,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:41:30,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:41:30,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:30,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762415609] [2022-11-18 19:41:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762415609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:30,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:30,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:41:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020195194] [2022-11-18 19:41:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:41:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:41:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:41:30,697 INFO L87 Difference]: Start difference. First operand 522 states and 674 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:41:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:30,881 INFO L93 Difference]: Finished difference Result 675 states and 846 transitions. [2022-11-18 19:41:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:41:30,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-18 19:41:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:30,884 INFO L225 Difference]: With dead ends: 675 [2022-11-18 19:41:30,884 INFO L226 Difference]: Without dead ends: 478 [2022-11-18 19:41:30,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:30,886 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:30,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 361 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-18 19:41:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 472. [2022-11-18 19:41:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 368 states have (on average 1.1630434782608696) internal successors, (428), 381 states have internal predecessors, (428), 54 states have call successors, (54), 28 states have call predecessors, (54), 49 states have return successors, (110), 62 states have call predecessors, (110), 53 states have call successors, (110) [2022-11-18 19:41:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 592 transitions. [2022-11-18 19:41:31,029 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 592 transitions. Word has length 95 [2022-11-18 19:41:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:31,030 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 592 transitions. [2022-11-18 19:41:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:41:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 592 transitions. [2022-11-18 19:41:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:41:31,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:31,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:31,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:31,247 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -902516262, now seen corresponding path program 1 times [2022-11-18 19:41:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424351991] [2022-11-18 19:41:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:31,250 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:31,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 19:41:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:41:31,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:41:31,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:31,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:31,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424351991] [2022-11-18 19:41:31,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424351991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:31,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:31,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:41:31,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818362702] [2022-11-18 19:41:31,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:31,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:41:31,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:31,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:41:31,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:41:31,729 INFO L87 Difference]: Start difference. First operand 472 states and 592 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:41:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:32,368 INFO L93 Difference]: Finished difference Result 780 states and 1004 transitions. [2022-11-18 19:41:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:41:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 97 [2022-11-18 19:41:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:32,372 INFO L225 Difference]: With dead ends: 780 [2022-11-18 19:41:32,372 INFO L226 Difference]: Without dead ends: 449 [2022-11-18 19:41:32,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:32,375 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:32,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 453 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-18 19:41:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 413. [2022-11-18 19:41:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 321 states have (on average 1.1246105919003115) internal successors, (361), 329 states have internal predecessors, (361), 51 states have call successors, (51), 28 states have call predecessors, (51), 40 states have return successors, (83), 55 states have call predecessors, (83), 50 states have call successors, (83) [2022-11-18 19:41:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 495 transitions. [2022-11-18 19:41:32,489 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 495 transitions. Word has length 97 [2022-11-18 19:41:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:32,489 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 495 transitions. [2022-11-18 19:41:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:41:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 495 transitions. [2022-11-18 19:41:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 19:41:32,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:32,492 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:32,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-18 19:41:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:32,708 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1798646180, now seen corresponding path program 2 times [2022-11-18 19:41:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:32,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365147640] [2022-11-18 19:41:32,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:32,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:32,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:32,710 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:41:32,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:32,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:33,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:41:33,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:41:35,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:39,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:41:39,672 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 30 treesize of output 29 [2022-11-18 19:41:39,706 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 19:41:39,707 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 24 treesize of output 19 [2022-11-18 19:41:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:41:39,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:39,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365147640] [2022-11-18 19:41:39,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365147640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:39,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:39,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2022-11-18 19:41:39,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353334835] [2022-11-18 19:41:39,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:41:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:41:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:41:39,757 INFO L87 Difference]: Start difference. First operand 413 states and 495 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 21 states have internal predecessors, (120), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-18 19:41:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:42,283 INFO L93 Difference]: Finished difference Result 624 states and 736 transitions. [2022-11-18 19:41:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:41:42,284 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 21 states have internal predecessors, (120), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 100 [2022-11-18 19:41:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:42,287 INFO L225 Difference]: With dead ends: 624 [2022-11-18 19:41:42,287 INFO L226 Difference]: Without dead ends: 509 [2022-11-18 19:41:42,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:41:42,289 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 80 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:42,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 953 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 98 Unchecked, 1.0s Time] [2022-11-18 19:41:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-18 19:41:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 480. [2022-11-18 19:41:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 376 states have (on average 1.1143617021276595) internal successors, (419), 385 states have internal predecessors, (419), 56 states have call successors, (56), 34 states have call predecessors, (56), 47 states have return successors, (79), 60 states have call predecessors, (79), 55 states have call successors, (79) [2022-11-18 19:41:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 554 transitions. [2022-11-18 19:41:42,420 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 554 transitions. Word has length 100 [2022-11-18 19:41:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:42,420 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 554 transitions. [2022-11-18 19:41:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 21 states have internal predecessors, (120), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-18 19:41:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 554 transitions. [2022-11-18 19:41:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 19:41:42,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:42,423 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:42,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:42,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:42,640 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1617876444, now seen corresponding path program 2 times [2022-11-18 19:41:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:42,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989019772] [2022-11-18 19:41:42,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:42,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:42,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:42,642 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:42,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:41:42,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:42,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:41:42,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:43,198 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-18 19:41:43,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-18 19:41:43,209 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 19:41:43,223 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 19:41:43,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 25 [2022-11-18 19:41:43,270 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 13 treesize of output 9 [2022-11-18 19:41:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:41:44,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:44,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:44,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989019772] [2022-11-18 19:41:44,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989019772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:44,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:44,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:41:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525813551] [2022-11-18 19:41:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:44,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:44,632 INFO L87 Difference]: Start difference. First operand 480 states and 554 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:41:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:45,334 INFO L93 Difference]: Finished difference Result 596 states and 694 transitions. [2022-11-18 19:41:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:41:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 102 [2022-11-18 19:41:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:45,337 INFO L225 Difference]: With dead ends: 596 [2022-11-18 19:41:45,337 INFO L226 Difference]: Without dead ends: 510 [2022-11-18 19:41:45,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:45,338 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 35 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:45,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 678 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 252 Unchecked, 0.3s Time] [2022-11-18 19:41:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-18 19:41:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 484. [2022-11-18 19:41:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 380 states have (on average 1.105263157894737) internal successors, (420), 388 states have internal predecessors, (420), 56 states have call successors, (56), 35 states have call predecessors, (56), 47 states have return successors, (76), 60 states have call predecessors, (76), 55 states have call successors, (76) [2022-11-18 19:41:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 552 transitions. [2022-11-18 19:41:45,458 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 552 transitions. Word has length 102 [2022-11-18 19:41:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:45,461 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 552 transitions. [2022-11-18 19:41:45,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:41:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 552 transitions. [2022-11-18 19:41:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 19:41:45,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:45,464 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:41:45,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:45,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:45,677 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash 599735532, now seen corresponding path program 1 times [2022-11-18 19:41:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:45,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663540109] [2022-11-18 19:41:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:45,680 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:45,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 19:41:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:41:46,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 51 proven. 40 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:42:07,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:29,350 INFO L321 Elim1Store]: treesize reduction 17, result has 82.8 percent of original size [2022-11-18 19:42:29,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 129 [2022-11-18 19:42:30,028 INFO L321 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2022-11-18 19:42:30,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 132 [2022-11-18 19:42:36,955 INFO L321 Elim1Store]: treesize reduction 17, result has 82.8 percent of original size [2022-11-18 19:42:36,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 125 [2022-11-18 19:42:37,432 INFO L321 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2022-11-18 19:42:37,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 132 [2022-11-18 19:42:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:42:38,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:42:38,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663540109] [2022-11-18 19:42:38,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663540109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:38,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:42:38,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 40 [2022-11-18 19:42:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864048226] [2022-11-18 19:42:38,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:42:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:42:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:42:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1417, Unknown=4, NotChecked=0, Total=1560 [2022-11-18 19:42:38,545 INFO L87 Difference]: Start difference. First operand 484 states and 552 transitions. Second operand has 40 states, 39 states have (on average 4.0) internal successors, (156), 33 states have internal predecessors, (156), 12 states have call successors, (21), 3 states have call predecessors, (21), 10 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-18 19:42:47,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:10,101 WARN L233 SmtUtils]: Spent 20.34s on a formula simplification. DAG size of input: 67 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:11,634 INFO L93 Difference]: Finished difference Result 760 states and 877 transitions. [2022-11-18 19:43:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:43:11,635 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.0) internal successors, (156), 33 states have internal predecessors, (156), 12 states have call successors, (21), 3 states have call predecessors, (21), 10 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) Word has length 115 [2022-11-18 19:43:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:11,638 INFO L225 Difference]: With dead ends: 760 [2022-11-18 19:43:11,638 INFO L226 Difference]: Without dead ends: 670 [2022-11-18 19:43:11,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=271, Invalid=2693, Unknown=6, NotChecked=0, Total=2970 [2022-11-18 19:43:11,640 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 103 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:11,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1684 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 518 Invalid, 1 Unknown, 382 Unchecked, 5.1s Time] [2022-11-18 19:43:11,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-18 19:43:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 574. [2022-11-18 19:43:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 457 states have (on average 1.1050328227571116) internal successors, (505), 463 states have internal predecessors, (505), 60 states have call successors, (60), 44 states have call predecessors, (60), 56 states have return successors, (79), 66 states have call predecessors, (79), 59 states have call successors, (79) [2022-11-18 19:43:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 644 transitions. [2022-11-18 19:43:11,829 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 644 transitions. Word has length 115 [2022-11-18 19:43:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:11,829 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 644 transitions. [2022-11-18 19:43:11,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.0) internal successors, (156), 33 states have internal predecessors, (156), 12 states have call successors, (21), 3 states have call predecessors, (21), 10 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-18 19:43:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 644 transitions. [2022-11-18 19:43:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 19:43:11,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:11,831 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:43:11,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:12,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:43:12,051 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -695879082, now seen corresponding path program 4 times [2022-11-18 19:43:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:43:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468073892] [2022-11-18 19:43:12,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:43:12,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:43:12,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:43:12,053 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:43:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_723360b8-518a-45c8-bf41-0a9d04b78524/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 19:43:12,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:43:12,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:12,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:43:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:14,726 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_18| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_21| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_21|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_18|) (bvadd |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_18| (_ bv16 64))))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_18| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_21| (_ BitVec 64))) (not (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_21| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_21|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_18|))))) is different from true [2022-11-18 19:43:17,054 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_68| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_68|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_68|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_68| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_68|) (_ bv0 64)) (_ bv16 64))))) is different from true [2022-11-18 19:43:19,276 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_33| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_33|) (_ bv0 64)) (_ bv16 64)))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_33| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_33|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_33|)))) is different from true [2022-11-18 19:43:29,525 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:43,927 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:54,161 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:44:04,616 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:44:13,019 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:44:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 64 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-18 19:44:13,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:18,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:44:18,657 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 28 treesize of output 31 [2022-11-18 19:44:18,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:44:18,705 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 22 treesize of output 25 [2022-11-18 19:44:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 19:44:18,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:18,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468073892] [2022-11-18 19:44:18,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468073892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:18,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:44:18,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 26 [2022-11-18 19:44:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540473456] [2022-11-18 19:44:18,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:44:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:44:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=420, Unknown=10, NotChecked=132, Total=650 [2022-11-18 19:44:18,915 INFO L87 Difference]: Start difference. First operand 574 states and 644 transitions. Second operand has 26 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 11 states have call successors, (20), 5 states have call predecessors, (20), 8 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-18 19:44:56,583 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:45:14,944 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:45:25,251 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)