./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:13:47,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:13:47,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:13:47,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:13:47,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:13:47,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:13:47,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:13:47,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:13:47,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:13:47,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:13:47,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:13:47,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:13:47,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:13:47,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:13:47,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:13:47,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:13:47,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:13:47,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:13:47,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:13:47,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:13:47,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:13:47,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:13:47,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:13:47,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:13:47,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:13:47,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:13:47,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:13:47,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:13:47,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:13:47,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:13:47,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:13:47,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:13:47,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:13:47,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:13:47,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:13:47,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:13:47,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:13:47,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:13:47,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:13:47,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:13:47,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:13:47,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:13:47,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:13:47,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:13:47,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:13:47,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:13:47,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:13:47,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:13:47,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:13:47,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:13:47,813 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:13:47,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:13:47,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:13:47,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:13:47,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:13:47,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:13:47,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:13:47,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:13:47,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:13:47,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:13:47,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:13:47,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:13:47,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:13:47,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:13:47,817 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:13:47,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:13:47,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:13:47,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:13:47,817 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-12-18 01:13:48,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:13:48,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:13:48,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:13:48,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:13:48,095 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:13:48,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:13:48,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6715e73/a841852b32cd4cec84d1271c6ba98f83/FLAGa29034327 [2021-12-18 01:13:48,801 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:13:48,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:13:48,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6715e73/a841852b32cd4cec84d1271c6ba98f83/FLAGa29034327 [2021-12-18 01:13:49,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6715e73/a841852b32cd4cec84d1271c6ba98f83 [2021-12-18 01:13:49,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:13:49,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:13:49,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:13:49,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:13:49,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:13:49,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:13:49" (1/1) ... [2021-12-18 01:13:49,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37643736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:49, skipping insertion in model container [2021-12-18 01:13:49,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:13:49" (1/1) ... [2021-12-18 01:13:49,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:13:49,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:13:49,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-18 01:13:49,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-18 01:13:50,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,343 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:13:50,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:13:50,347 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:13:50,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:13:50,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:13:50,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:13:50,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:13:50,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:13:50,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:13:50,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:13:50,459 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:13:50,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,491 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:13:50,679 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:13:50,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-18 01:13:50,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-18 01:13:50,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:13:50,803 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:13:50,804 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:13:50,804 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:13:50,805 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:13:50,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:13:50,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:13:50,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:13:50,807 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:13:50,807 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:13:50,831 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:13:50,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,876 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:13:50,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:13:51,059 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:13:51,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51 WrapperNode [2021-12-18 01:13:51,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:13:51,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:13:51,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:13:51,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:13:51,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,192 INFO L137 Inliner]: procedures = 697, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 840 [2021-12-18 01:13:51,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:13:51,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:13:51,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:13:51,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:13:51,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:13:51,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:13:51,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:13:51,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:13:51,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (1/1) ... [2021-12-18 01:13:51,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:13:51,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:13:51,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 01:13:51,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 01:13:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-18 01:13:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-18 01:13:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-18 01:13:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-18 01:13:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:13:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-18 01:13:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-18 01:13:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-18 01:13:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-18 01:13:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:13:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:13:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:13:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:13:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:13:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:13:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:13:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:13:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:13:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:13:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-18 01:13:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-18 01:13:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:13:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:13:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:13:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:13:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-18 01:13:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-18 01:13:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-18 01:13:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-18 01:13:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:13:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:13:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-18 01:13:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-18 01:13:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-18 01:13:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-18 01:13:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:13:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:13:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-18 01:13:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-18 01:13:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:13:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 01:13:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2021-12-18 01:13:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2021-12-18 01:13:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:13:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-18 01:13:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-18 01:13:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:13:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:13:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-18 01:13:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-18 01:13:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:13:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:13:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:13:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:13:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:13:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:13:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:13:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:13:51,716 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:13:51,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:13:52,448 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:13:52,462 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:13:52,463 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 01:13:52,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:13:52 BoogieIcfgContainer [2021-12-18 01:13:52,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:13:52,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:13:52,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:13:52,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:13:52,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:13:49" (1/3) ... [2021-12-18 01:13:52,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfe3a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:13:52, skipping insertion in model container [2021-12-18 01:13:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:13:51" (2/3) ... [2021-12-18 01:13:52,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfe3a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:13:52, skipping insertion in model container [2021-12-18 01:13:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:13:52" (3/3) ... [2021-12-18 01:13:52,474 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:13:52,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:13:52,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:13:52,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:13:52,534 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 01:13:52,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:13:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-18 01:13:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 01:13:52,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:13:52,571 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:13:52,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:13:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:13:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2021-12-18 01:13:52,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:13:52,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507256437] [2021-12-18 01:13:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:52,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:13:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:13:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:13:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:13:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 01:13:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:13:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 01:13:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 01:13:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 01:13:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 01:13:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 01:13:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 01:13:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 01:13:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 01:13:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 01:13:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 01:13:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 01:13:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:13:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 01:13:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 01:13:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 01:13:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 01:13:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 01:13:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-18 01:13:53,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:13:53,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507256437] [2021-12-18 01:13:53,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507256437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:13:53,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:13:53,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:13:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131096382] [2021-12-18 01:13:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:13:53,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:13:53,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:13:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:13:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:13:53,391 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:13:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:13:54,354 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2021-12-18 01:13:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:13:54,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2021-12-18 01:13:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:13:54,372 INFO L225 Difference]: With dead ends: 731 [2021-12-18 01:13:54,373 INFO L226 Difference]: Without dead ends: 423 [2021-12-18 01:13:54,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:13:54,383 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 127 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:13:54,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 642 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 01:13:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-18 01:13:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2021-12-18 01:13:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-18 01:13:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2021-12-18 01:13:54,476 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2021-12-18 01:13:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:13:54,477 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2021-12-18 01:13:54,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:13:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2021-12-18 01:13:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 01:13:54,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:13:54,492 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:13:54,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:13:54,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:13:54,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:13:54,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2021-12-18 01:13:54,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:13:54,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424584372] [2021-12-18 01:13:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:54,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:13:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:13:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:13:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:13:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 01:13:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:13:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 01:13:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 01:13:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 01:13:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 01:13:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 01:13:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 01:13:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 01:13:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 01:13:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 01:13:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 01:13:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 01:13:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:13:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 01:13:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 01:13:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 01:13:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 01:13:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 01:13:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-18 01:13:54,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:13:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424584372] [2021-12-18 01:13:54,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424584372] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:13:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794892677] [2021-12-18 01:13:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:54,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:13:54,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:13:54,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 01:13:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:55,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 01:13:55,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:13:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:13:55,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:13:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794892677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:13:55,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:13:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-18 01:13:55,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927960505] [2021-12-18 01:13:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:13:55,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:13:55,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:13:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:13:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:13:55,757 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 01:13:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:13:55,973 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2021-12-18 01:13:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:13:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2021-12-18 01:13:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:13:55,976 INFO L225 Difference]: With dead ends: 596 [2021-12-18 01:13:55,977 INFO L226 Difference]: Without dead ends: 323 [2021-12-18 01:13:55,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-18 01:13:55,979 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 456 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:13:55,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1503 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:13:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-18 01:13:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-12-18 01:13:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2021-12-18 01:13:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2021-12-18 01:13:56,012 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2021-12-18 01:13:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:13:56,013 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2021-12-18 01:13:56,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 01:13:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2021-12-18 01:13:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 01:13:56,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:13:56,016 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:13:56,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 01:13:56,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:56,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:13:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:13:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2021-12-18 01:13:56,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:13:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444514975] [2021-12-18 01:13:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:56,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:13:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:13:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:13:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:13:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 01:13:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:13:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 01:13:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 01:13:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 01:13:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 01:13:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 01:13:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 01:13:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:13:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:13:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 01:13:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:13:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 01:13:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 01:13:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 01:13:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 01:13:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 01:13:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 01:13:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 01:13:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 01:13:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 01:13:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 01:13:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-18 01:13:56,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:13:56,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444514975] [2021-12-18 01:13:56,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444514975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:13:56,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076809580] [2021-12-18 01:13:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:56,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:13:56,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:13:56,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 01:13:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:57,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:13:57,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:13:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:13:57,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:13:57,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076809580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:13:57,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:13:57,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-18 01:13:57,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788645042] [2021-12-18 01:13:57,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:13:57,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:13:57,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:13:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:13:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:13:57,446 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 01:13:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:13:57,801 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2021-12-18 01:13:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:13:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2021-12-18 01:13:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:13:57,805 INFO L225 Difference]: With dead ends: 619 [2021-12-18 01:13:57,805 INFO L226 Difference]: Without dead ends: 344 [2021-12-18 01:13:57,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-18 01:13:57,808 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 518 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:13:57,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2169 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:13:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-18 01:13:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2021-12-18 01:13:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-18 01:13:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-18 01:13:57,833 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2021-12-18 01:13:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:13:57,833 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-18 01:13:57,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 01:13:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-18 01:13:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-18 01:13:57,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:13:57,836 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:13:57,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 01:13:58,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-18 01:13:58,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:13:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:13:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2021-12-18 01:13:58,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:13:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51663082] [2021-12-18 01:13:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:58,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:13:58,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:13:58,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206723881] [2021-12-18 01:13:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:58,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:13:58,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:13:58,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 01:13:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:58,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:13:58,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:13:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:13:58,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:13:58,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:13:58,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51663082] [2021-12-18 01:13:58,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:13:58,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206723881] [2021-12-18 01:13:58,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206723881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:13:58,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:13:58,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:13:58,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743969441] [2021-12-18 01:13:58,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:13:58,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:13:58,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:13:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:13:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:13:58,897 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 01:13:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:13:59,149 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2021-12-18 01:13:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:13:59,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2021-12-18 01:13:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:13:59,155 INFO L225 Difference]: With dead ends: 644 [2021-12-18 01:13:59,155 INFO L226 Difference]: Without dead ends: 350 [2021-12-18 01:13:59,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:13:59,158 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 480 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:13:59,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1847 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:13:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-18 01:13:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2021-12-18 01:13:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-18 01:13:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-18 01:13:59,194 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2021-12-18 01:13:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:13:59,195 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-18 01:13:59,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 01:13:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-18 01:13:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 01:13:59,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:13:59,198 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:13:59,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 01:13:59,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:59,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:13:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:13:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2021-12-18 01:13:59,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:13:59,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889828542] [2021-12-18 01:13:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:59,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:13:59,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:13:59,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23741241] [2021-12-18 01:13:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:13:59,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:13:59,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:13:59,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:13:59,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 01:13:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:13:59,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:13:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-18 01:14:00,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:00,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:00,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889828542] [2021-12-18 01:14:00,291 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:00,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23741241] [2021-12-18 01:14:00,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23741241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:00,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:00,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:14:00,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102410316] [2021-12-18 01:14:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:00,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:14:00,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:14:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:14:00,294 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:14:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:00,752 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2021-12-18 01:14:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2021-12-18 01:14:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:00,755 INFO L225 Difference]: With dead ends: 654 [2021-12-18 01:14:00,755 INFO L226 Difference]: Without dead ends: 360 [2021-12-18 01:14:00,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:14:00,757 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 551 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:00,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 2482 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:14:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-18 01:14:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2021-12-18 01:14:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-18 01:14:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-18 01:14:00,774 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2021-12-18 01:14:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:00,775 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-18 01:14:00,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:14:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-18 01:14:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 01:14:00,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:00,778 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:00,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-18 01:14:00,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:00,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2021-12-18 01:14:00,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620979382] [2021-12-18 01:14:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:01,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:01,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:01,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659867621] [2021-12-18 01:14:01,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:14:01,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:01,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:01,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:01,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 01:14:01,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:14:01,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:14:01,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:14:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 01:14:02,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:02,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:02,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620979382] [2021-12-18 01:14:02,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:02,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659867621] [2021-12-18 01:14:02,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659867621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:02,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:02,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:14:02,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183888579] [2021-12-18 01:14:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:02,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:14:02,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:14:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:14:02,155 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:14:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:02,459 INFO L93 Difference]: Finished difference Result 604 states and 860 transitions. [2021-12-18 01:14:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:02,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 210 [2021-12-18 01:14:02,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:02,463 INFO L225 Difference]: With dead ends: 604 [2021-12-18 01:14:02,463 INFO L226 Difference]: Without dead ends: 344 [2021-12-18 01:14:02,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-18 01:14:02,465 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 484 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:02,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 2162 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:14:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-18 01:14:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-12-18 01:14:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 214 states have internal predecessors, (256), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2021-12-18 01:14:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 484 transitions. [2021-12-18 01:14:02,481 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 484 transitions. Word has length 210 [2021-12-18 01:14:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:02,481 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 484 transitions. [2021-12-18 01:14:02,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:14:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 484 transitions. [2021-12-18 01:14:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-18 01:14:02,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:02,485 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:02,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-18 01:14:02,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:02,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1993898586, now seen corresponding path program 1 times [2021-12-18 01:14:02,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953574192] [2021-12-18 01:14:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:02,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:02,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:02,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566681439] [2021-12-18 01:14:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:02,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:02,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:02,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 01:14:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:03,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-18 01:14:03,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:03,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953574192] [2021-12-18 01:14:03,608 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566681439] [2021-12-18 01:14:03,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566681439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:03,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:03,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:14:03,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6090448] [2021-12-18 01:14:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:03,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:14:03,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:14:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:14:03,610 INFO L87 Difference]: Start difference. First operand 344 states and 484 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 01:14:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:03,961 INFO L93 Difference]: Finished difference Result 609 states and 867 transitions. [2021-12-18 01:14:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:03,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 233 [2021-12-18 01:14:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:03,966 INFO L225 Difference]: With dead ends: 609 [2021-12-18 01:14:03,966 INFO L226 Difference]: Without dead ends: 347 [2021-12-18 01:14:03,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:14:03,968 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 508 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:03,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 2480 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:14:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-18 01:14:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-12-18 01:14:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 215 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2021-12-18 01:14:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 485 transitions. [2021-12-18 01:14:03,985 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 485 transitions. Word has length 233 [2021-12-18 01:14:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 485 transitions. [2021-12-18 01:14:03,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 01:14:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 485 transitions. [2021-12-18 01:14:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-18 01:14:03,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:03,990 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:04,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:04,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:04,204 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1980225751, now seen corresponding path program 1 times [2021-12-18 01:14:04,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:04,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491785449] [2021-12-18 01:14:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:04,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:04,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:04,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637974447] [2021-12-18 01:14:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:04,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:04,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:04,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 01:14:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:04,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 01:14:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-18 01:14:05,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:05,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491785449] [2021-12-18 01:14:05,157 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637974447] [2021-12-18 01:14:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637974447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:05,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:05,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:14:05,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059449122] [2021-12-18 01:14:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:14:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:14:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:14:05,160 INFO L87 Difference]: Start difference. First operand 345 states and 485 transitions. Second operand has 11 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-18 01:14:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:05,735 INFO L93 Difference]: Finished difference Result 610 states and 866 transitions. [2021-12-18 01:14:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:14:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 249 [2021-12-18 01:14:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:05,737 INFO L225 Difference]: With dead ends: 610 [2021-12-18 01:14:05,737 INFO L226 Difference]: Without dead ends: 347 [2021-12-18 01:14:05,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-12-18 01:14:05,739 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 579 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:05,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 3057 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:14:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-18 01:14:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2021-12-18 01:14:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (118), 106 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-18 01:14:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 479 transitions. [2021-12-18 01:14:05,754 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 479 transitions. Word has length 249 [2021-12-18 01:14:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:05,755 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 479 transitions. [2021-12-18 01:14:05,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-18 01:14:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 479 transitions. [2021-12-18 01:14:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-12-18 01:14:05,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:05,759 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:05,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:05,976 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -755550831, now seen corresponding path program 2 times [2021-12-18 01:14:05,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:05,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926499518] [2021-12-18 01:14:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:05,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:06,050 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:06,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725038746] [2021-12-18 01:14:06,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:14:06,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:06,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:06,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 01:14:06,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:14:06,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:14:06,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-18 01:14:07,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:07,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926499518] [2021-12-18 01:14:07,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725038746] [2021-12-18 01:14:07,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725038746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:07,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:07,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:14:07,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571570643] [2021-12-18 01:14:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:07,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:14:07,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:14:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:14:07,145 INFO L87 Difference]: Start difference. First operand 342 states and 479 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:14:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:07,580 INFO L93 Difference]: Finished difference Result 609 states and 864 transitions. [2021-12-18 01:14:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:07,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 264 [2021-12-18 01:14:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:07,584 INFO L225 Difference]: With dead ends: 609 [2021-12-18 01:14:07,584 INFO L226 Difference]: Without dead ends: 354 [2021-12-18 01:14:07,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-18 01:14:07,586 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 488 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:07,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 2825 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:14:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-18 01:14:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2021-12-18 01:14:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 216 states have (on average 1.212962962962963) internal successors, (262), 218 states have internal predecessors, (262), 111 states have call successors, (111), 24 states have call predecessors, (111), 26 states have return successors, (123), 111 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-18 01:14:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 496 transitions. [2021-12-18 01:14:07,599 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 496 transitions. Word has length 264 [2021-12-18 01:14:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:07,600 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 496 transitions. [2021-12-18 01:14:07,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:14:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 496 transitions. [2021-12-18 01:14:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-18 01:14:07,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:07,603 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:07,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:07,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-18 01:14:07,827 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash 854827913, now seen corresponding path program 1 times [2021-12-18 01:14:07,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:07,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685104461] [2021-12-18 01:14:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:07,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:07,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:07,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702622650] [2021-12-18 01:14:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:07,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:07,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:07,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:07,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 01:14:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:08,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:08,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-18 01:14:08,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:08,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:08,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685104461] [2021-12-18 01:14:08,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:08,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702622650] [2021-12-18 01:14:08,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702622650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:08,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:08,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:14:08,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870577687] [2021-12-18 01:14:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:08,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:14:08,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:14:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:14:08,965 INFO L87 Difference]: Start difference. First operand 354 states and 496 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:09,261 INFO L93 Difference]: Finished difference Result 696 states and 991 transitions. [2021-12-18 01:14:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:09,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2021-12-18 01:14:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:09,264 INFO L225 Difference]: With dead ends: 696 [2021-12-18 01:14:09,264 INFO L226 Difference]: Without dead ends: 390 [2021-12-18 01:14:09,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:14:09,267 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 21 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:09,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2016 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-18 01:14:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 362. [2021-12-18 01:14:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 224 states have (on average 1.2142857142857142) internal successors, (272), 226 states have internal predecessors, (272), 111 states have call successors, (111), 24 states have call predecessors, (111), 26 states have return successors, (123), 111 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-18 01:14:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 506 transitions. [2021-12-18 01:14:09,284 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 506 transitions. Word has length 294 [2021-12-18 01:14:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:09,285 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 506 transitions. [2021-12-18 01:14:09,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 506 transitions. [2021-12-18 01:14:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-18 01:14:09,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:09,287 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:09,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:09,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 01:14:09,503 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:09,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash 379707337, now seen corresponding path program 1 times [2021-12-18 01:14:09,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:09,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95692367] [2021-12-18 01:14:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:09,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:09,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:09,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753978491] [2021-12-18 01:14:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:09,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:09,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:09,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:09,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 01:14:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:10,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:14:10,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-18 01:14:10,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:10,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95692367] [2021-12-18 01:14:10,542 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:10,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753978491] [2021-12-18 01:14:10,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753978491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:10,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:10,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:10,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785813208] [2021-12-18 01:14:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:10,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:10,543 INFO L87 Difference]: Start difference. First operand 362 states and 506 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:10,582 INFO L93 Difference]: Finished difference Result 684 states and 967 transitions. [2021-12-18 01:14:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:14:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2021-12-18 01:14:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:10,586 INFO L225 Difference]: With dead ends: 684 [2021-12-18 01:14:10,586 INFO L226 Difference]: Without dead ends: 370 [2021-12-18 01:14:10,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:10,588 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 3 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:10,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1303 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-18 01:14:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2021-12-18 01:14:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 230 states have internal predecessors, (276), 111 states have call successors, (111), 24 states have call predecessors, (111), 26 states have return successors, (123), 111 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-18 01:14:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 510 transitions. [2021-12-18 01:14:10,604 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 510 transitions. Word has length 294 [2021-12-18 01:14:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:10,605 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 510 transitions. [2021-12-18 01:14:10,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 510 transitions. [2021-12-18 01:14:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-18 01:14:10,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:10,607 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:10,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:10,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 01:14:10,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1563569161, now seen corresponding path program 1 times [2021-12-18 01:14:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:10,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805810750] [2021-12-18 01:14:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:10,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:10,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:10,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983407360] [2021-12-18 01:14:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:10,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:10,921 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:10,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 01:14:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-18 01:14:11,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:12,395 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1479 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1479))) is different from true [2021-12-18 01:14:12,567 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1480 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1480))) is different from true [2021-12-18 01:14:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 17 not checked. [2021-12-18 01:14:13,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:14:13,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805810750] [2021-12-18 01:14:13,610 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983407360] [2021-12-18 01:14:13,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983407360] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:14:13,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:14:13,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-12-18 01:14:13,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35997911] [2021-12-18 01:14:13,610 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:14:13,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-18 01:14:13,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-18 01:14:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=753, Unknown=32, NotChecked=114, Total=992 [2021-12-18 01:14:13,612 INFO L87 Difference]: Start difference. First operand 366 states and 510 transitions. Second operand has 26 states, 25 states have (on average 5.76) internal successors, (144), 23 states have internal predecessors, (144), 12 states have call successors, (39), 5 states have call predecessors, (39), 8 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2021-12-18 01:14:14,017 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1480 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1480))) (exists ((v_ArrVal_1479 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1479)))) is different from true [2021-12-18 01:14:14,044 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1480 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1480))) (exists ((v_ArrVal_1479 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1479))) (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and (not |c_aws_array_list_is_valid_#t~short88|) (not .cse0)) (and |c_aws_array_list_is_valid_#t~short88| .cse0)))) is different from true [2021-12-18 01:14:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:16,418 INFO L93 Difference]: Finished difference Result 993 states and 1490 transitions. [2021-12-18 01:14:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 01:14:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.76) internal successors, (144), 23 states have internal predecessors, (144), 12 states have call successors, (39), 5 states have call predecessors, (39), 8 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 294 [2021-12-18 01:14:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:16,424 INFO L225 Difference]: With dead ends: 993 [2021-12-18 01:14:16,424 INFO L226 Difference]: Without dead ends: 675 [2021-12-18 01:14:16,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1288, Unknown=44, NotChecked=308, Total=1806 [2021-12-18 01:14:16,427 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 246 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 5311 SdHoareTripleChecker+Invalid, 9044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5864 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:16,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 5311 Invalid, 9044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3007 Invalid, 0 Unknown, 5864 Unchecked, 2.4s Time] [2021-12-18 01:14:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-12-18 01:14:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 424. [2021-12-18 01:14:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 276 states have (on average 1.2210144927536233) internal successors, (337), 279 states have internal predecessors, (337), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 118 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 615 transitions. [2021-12-18 01:14:16,455 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 615 transitions. Word has length 294 [2021-12-18 01:14:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:16,455 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 615 transitions. [2021-12-18 01:14:16,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.76) internal successors, (144), 23 states have internal predecessors, (144), 12 states have call successors, (39), 5 states have call predecessors, (39), 8 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2021-12-18 01:14:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 615 transitions. [2021-12-18 01:14:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-18 01:14:16,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:16,458 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:16,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:16,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-18 01:14:16,683 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash -469512247, now seen corresponding path program 1 times [2021-12-18 01:14:16,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233690934] [2021-12-18 01:14:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:16,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:16,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248375740] [2021-12-18 01:14:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:16,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:16,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:16,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 01:14:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3410 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-18 01:14:17,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-18 01:14:17,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:17,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:17,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233690934] [2021-12-18 01:14:17,736 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:17,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248375740] [2021-12-18 01:14:17,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248375740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:17,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:17,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:14:17,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899333635] [2021-12-18 01:14:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:17,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:14:17,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:14:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:17,739 INFO L87 Difference]: Start difference. First operand 424 states and 615 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:17,794 INFO L93 Difference]: Finished difference Result 838 states and 1236 transitions. [2021-12-18 01:14:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:17,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2021-12-18 01:14:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:17,798 INFO L225 Difference]: With dead ends: 838 [2021-12-18 01:14:17,799 INFO L226 Difference]: Without dead ends: 462 [2021-12-18 01:14:17,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:14:17,803 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 8 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:17,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1788 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-18 01:14:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 440. [2021-12-18 01:14:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 292 states have (on average 1.2226027397260273) internal successors, (357), 295 states have internal predecessors, (357), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 118 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 635 transitions. [2021-12-18 01:14:17,830 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 635 transitions. Word has length 294 [2021-12-18 01:14:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:17,830 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 635 transitions. [2021-12-18 01:14:17,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 635 transitions. [2021-12-18 01:14:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-18 01:14:17,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:17,833 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:17,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:18,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-18 01:14:18,048 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1560863607, now seen corresponding path program 1 times [2021-12-18 01:14:18,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:18,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065766712] [2021-12-18 01:14:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:18,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:18,107 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068762644] [2021-12-18 01:14:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:18,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:18,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:18,109 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:18,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 01:14:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:18,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 3410 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:14:18,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-18 01:14:19,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:19,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:19,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065766712] [2021-12-18 01:14:19,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:19,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068762644] [2021-12-18 01:14:19,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068762644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:19,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:19,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872033718] [2021-12-18 01:14:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:19,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:19,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:19,162 INFO L87 Difference]: Start difference. First operand 440 states and 635 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:14:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:19,198 INFO L93 Difference]: Finished difference Result 835 states and 1245 transitions. [2021-12-18 01:14:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:14:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 318 [2021-12-18 01:14:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:19,202 INFO L225 Difference]: With dead ends: 835 [2021-12-18 01:14:19,203 INFO L226 Difference]: Without dead ends: 443 [2021-12-18 01:14:19,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:19,206 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 7 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:19,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-18 01:14:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 440. [2021-12-18 01:14:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 292 states have (on average 1.2191780821917808) internal successors, (356), 295 states have internal predecessors, (356), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 118 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 634 transitions. [2021-12-18 01:14:19,224 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 634 transitions. Word has length 318 [2021-12-18 01:14:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:19,224 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 634 transitions. [2021-12-18 01:14:19,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:14:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 634 transitions. [2021-12-18 01:14:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-18 01:14:19,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:19,227 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:19,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:19,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-18 01:14:19,451 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1620206554, now seen corresponding path program 1 times [2021-12-18 01:14:19,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:19,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664109992] [2021-12-18 01:14:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:19,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:19,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:19,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681002448] [2021-12-18 01:14:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:19,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:19,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:19,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:19,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 01:14:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:14:20,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-12-18 01:14:20,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:20,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:20,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664109992] [2021-12-18 01:14:20,451 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:20,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681002448] [2021-12-18 01:14:20,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681002448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:20,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:20,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:20,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896434875] [2021-12-18 01:14:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:20,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:20,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:20,453 INFO L87 Difference]: Start difference. First operand 440 states and 634 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:20,488 INFO L93 Difference]: Finished difference Result 820 states and 1199 transitions. [2021-12-18 01:14:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:14:20,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2021-12-18 01:14:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:20,492 INFO L225 Difference]: With dead ends: 820 [2021-12-18 01:14:20,492 INFO L226 Difference]: Without dead ends: 428 [2021-12-18 01:14:20,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:20,497 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 2 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:20,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1306 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-18 01:14:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 420. [2021-12-18 01:14:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 272 states have (on average 1.1948529411764706) internal successors, (325), 275 states have internal predecessors, (325), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 118 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 603 transitions. [2021-12-18 01:14:20,516 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 603 transitions. Word has length 312 [2021-12-18 01:14:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:20,516 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 603 transitions. [2021-12-18 01:14:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 01:14:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 603 transitions. [2021-12-18 01:14:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-18 01:14:20,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:20,519 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:20,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:20,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:20,739 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 692792946, now seen corresponding path program 1 times [2021-12-18 01:14:20,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:20,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087070341] [2021-12-18 01:14:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:20,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:20,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955362552] [2021-12-18 01:14:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:20,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:20,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:20,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:20,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 01:14:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:21,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:14:21,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-12-18 01:14:21,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:21,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:21,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087070341] [2021-12-18 01:14:21,797 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955362552] [2021-12-18 01:14:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955362552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:21,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:21,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:14:21,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008562620] [2021-12-18 01:14:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:14:21,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:14:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:21,799 INFO L87 Difference]: Start difference. First operand 420 states and 603 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:14:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:22,023 INFO L93 Difference]: Finished difference Result 799 states and 1198 transitions. [2021-12-18 01:14:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 302 [2021-12-18 01:14:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:22,028 INFO L225 Difference]: With dead ends: 799 [2021-12-18 01:14:22,028 INFO L226 Difference]: Without dead ends: 427 [2021-12-18 01:14:22,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:14:22,030 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 15 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:22,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1652 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-18 01:14:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 421. [2021-12-18 01:14:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 273 states have (on average 1.1941391941391941) internal successors, (326), 276 states have internal predecessors, (326), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 118 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 604 transitions. [2021-12-18 01:14:22,051 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 604 transitions. Word has length 302 [2021-12-18 01:14:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:22,052 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 604 transitions. [2021-12-18 01:14:22,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:14:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 604 transitions. [2021-12-18 01:14:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-18 01:14:22,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:22,054 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:22,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:22,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 01:14:22,259 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1928414999, now seen corresponding path program 1 times [2021-12-18 01:14:22,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401395527] [2021-12-18 01:14:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:22,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:22,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:22,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67971638] [2021-12-18 01:14:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:22,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:22,316 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:22,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 01:14:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:22,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 3412 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 01:14:22,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-18 01:14:23,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:23,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401395527] [2021-12-18 01:14:23,354 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67971638] [2021-12-18 01:14:23,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67971638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:23,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:23,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 01:14:23,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121037179] [2021-12-18 01:14:23,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:23,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 01:14:23,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 01:14:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:14:23,357 INFO L87 Difference]: Start difference. First operand 421 states and 604 transitions. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:14:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:23,467 INFO L93 Difference]: Finished difference Result 820 states and 1201 transitions. [2021-12-18 01:14:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:14:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 2 states have call successors, (34) Word has length 306 [2021-12-18 01:14:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:23,470 INFO L225 Difference]: With dead ends: 820 [2021-12-18 01:14:23,471 INFO L226 Difference]: Without dead ends: 447 [2021-12-18 01:14:23,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:14:23,473 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 18 mSDsluCounter, 4516 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4971 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:23,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4971 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:14:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-18 01:14:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 430. [2021-12-18 01:14:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 282 states have (on average 1.1914893617021276) internal successors, (336), 283 states have internal predecessors, (336), 115 states have call successors, (115), 26 states have call predecessors, (115), 32 states have return successors, (163), 120 states have call predecessors, (163), 114 states have call successors, (163) [2021-12-18 01:14:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 614 transitions. [2021-12-18 01:14:23,489 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 614 transitions. Word has length 306 [2021-12-18 01:14:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:23,490 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 614 transitions. [2021-12-18 01:14:23,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 5 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:14:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 614 transitions. [2021-12-18 01:14:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-18 01:14:23,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:23,492 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:23,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:23,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 01:14:23,706 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash -782990673, now seen corresponding path program 1 times [2021-12-18 01:14:23,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:23,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260495098] [2021-12-18 01:14:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:23,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:23,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218842822] [2021-12-18 01:14:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:23,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:23,757 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:23,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 01:14:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:24,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3419 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-18 01:14:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:25,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-18 01:14:25,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-18 01:14:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-12-18 01:14:25,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:25,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:25,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260495098] [2021-12-18 01:14:25,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:25,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218842822] [2021-12-18 01:14:25,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218842822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:25,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:25,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 01:14:25,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438384823] [2021-12-18 01:14:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:25,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 01:14:25,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 01:14:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-18 01:14:25,272 INFO L87 Difference]: Start difference. First operand 430 states and 614 transitions. Second operand has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:14:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:26,128 INFO L93 Difference]: Finished difference Result 866 states and 1264 transitions. [2021-12-18 01:14:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:14:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 300 [2021-12-18 01:14:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:26,134 INFO L225 Difference]: With dead ends: 866 [2021-12-18 01:14:26,134 INFO L226 Difference]: Without dead ends: 527 [2021-12-18 01:14:26,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 283 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:14:26,136 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 126 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:26,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 4415 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 910 Invalid, 0 Unknown, 111 Unchecked, 0.6s Time] [2021-12-18 01:14:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-18 01:14:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 480. [2021-12-18 01:14:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 323 states have (on average 1.1826625386996905) internal successors, (382), 324 states have internal predecessors, (382), 119 states have call successors, (119), 28 states have call predecessors, (119), 37 states have return successors, (201), 127 states have call predecessors, (201), 118 states have call successors, (201) [2021-12-18 01:14:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 702 transitions. [2021-12-18 01:14:26,160 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 702 transitions. Word has length 300 [2021-12-18 01:14:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:26,161 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 702 transitions. [2021-12-18 01:14:26,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:14:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 702 transitions. [2021-12-18 01:14:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 01:14:26,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:26,165 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:26,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:26,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 01:14:26,388 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1604319351, now seen corresponding path program 1 times [2021-12-18 01:14:26,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:26,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390054316] [2021-12-18 01:14:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:26,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:26,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:26,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363964170] [2021-12-18 01:14:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:26,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:26,439 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:26,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-18 01:14:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:27,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-18 01:14:27,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:28,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-18 01:14:28,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-18 01:14:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-18 01:14:28,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:28,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:28,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390054316] [2021-12-18 01:14:28,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:28,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363964170] [2021-12-18 01:14:28,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363964170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:28,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:28,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 01:14:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292189307] [2021-12-18 01:14:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:28,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 01:14:28,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 01:14:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:14:28,200 INFO L87 Difference]: Start difference. First operand 480 states and 702 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 15 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:14:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:29,132 INFO L93 Difference]: Finished difference Result 958 states and 1430 transitions. [2021-12-18 01:14:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 01:14:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 15 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 298 [2021-12-18 01:14:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:29,136 INFO L225 Difference]: With dead ends: 958 [2021-12-18 01:14:29,137 INFO L226 Difference]: Without dead ends: 583 [2021-12-18 01:14:29,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-12-18 01:14:29,139 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 123 mSDsluCounter, 4737 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:29,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 5171 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1114 Invalid, 0 Unknown, 101 Unchecked, 0.7s Time] [2021-12-18 01:14:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-18 01:14:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 486. [2021-12-18 01:14:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 328 states have (on average 1.1829268292682926) internal successors, (388), 329 states have internal predecessors, (388), 119 states have call successors, (119), 28 states have call predecessors, (119), 38 states have return successors, (215), 128 states have call predecessors, (215), 118 states have call successors, (215) [2021-12-18 01:14:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 722 transitions. [2021-12-18 01:14:29,163 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 722 transitions. Word has length 298 [2021-12-18 01:14:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:29,163 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 722 transitions. [2021-12-18 01:14:29,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 15 states have internal predecessors, (126), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:14:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 722 transitions. [2021-12-18 01:14:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 01:14:29,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:29,166 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:29,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:29,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:29,391 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1484208019, now seen corresponding path program 1 times [2021-12-18 01:14:29,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:29,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707741376] [2021-12-18 01:14:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:29,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:29,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078678285] [2021-12-18 01:14:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:29,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:29,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:29,461 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:29,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-18 01:14:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:30,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 3412 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:14:30,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-12-18 01:14:30,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:30,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707741376] [2021-12-18 01:14:30,432 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078678285] [2021-12-18 01:14:30,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078678285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:30,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:30,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:14:30,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037796149] [2021-12-18 01:14:30,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:30,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:14:30,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:14:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:30,434 INFO L87 Difference]: Start difference. First operand 486 states and 722 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:14:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:30,653 INFO L93 Difference]: Finished difference Result 913 states and 1420 transitions. [2021-12-18 01:14:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 310 [2021-12-18 01:14:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:30,658 INFO L225 Difference]: With dead ends: 913 [2021-12-18 01:14:30,658 INFO L226 Difference]: Without dead ends: 475 [2021-12-18 01:14:30,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:14:30,661 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 7 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:30,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1667 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-12-18 01:14:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 472. [2021-12-18 01:14:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 315 states have (on average 1.1746031746031746) internal successors, (370), 316 states have internal predecessors, (370), 119 states have call successors, (119), 28 states have call predecessors, (119), 37 states have return successors, (201), 127 states have call predecessors, (201), 118 states have call successors, (201) [2021-12-18 01:14:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 690 transitions. [2021-12-18 01:14:30,681 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 690 transitions. Word has length 310 [2021-12-18 01:14:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:30,681 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 690 transitions. [2021-12-18 01:14:30,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:14:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 690 transitions. [2021-12-18 01:14:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 01:14:30,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:30,685 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:30,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:30,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:30,907 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash -137212077, now seen corresponding path program 1 times [2021-12-18 01:14:30,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:30,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320263723] [2021-12-18 01:14:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:30,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:30,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:30,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933640521] [2021-12-18 01:14:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:30,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:30,964 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:30,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-18 01:14:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:31,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-18 01:14:31,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 183 proven. 1 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-18 01:14:32,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:14:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-12-18 01:14:32,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320263723] [2021-12-18 01:14:32,914 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933640521] [2021-12-18 01:14:32,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933640521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:14:32,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:14:32,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2021-12-18 01:14:32,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540848409] [2021-12-18 01:14:32,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:14:32,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 01:14:32,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:32,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 01:14:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-18 01:14:32,916 INFO L87 Difference]: Start difference. First operand 472 states and 690 transitions. Second operand has 22 states, 18 states have (on average 7.166666666666667) internal successors, (129), 15 states have internal predecessors, (129), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2021-12-18 01:14:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:33,334 INFO L93 Difference]: Finished difference Result 834 states and 1241 transitions. [2021-12-18 01:14:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 01:14:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.166666666666667) internal successors, (129), 15 states have internal predecessors, (129), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) Word has length 310 [2021-12-18 01:14:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:33,339 INFO L225 Difference]: With dead ends: 834 [2021-12-18 01:14:33,340 INFO L226 Difference]: Without dead ends: 479 [2021-12-18 01:14:33,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 597 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-12-18 01:14:33,342 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 22 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6408 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:33,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 6408 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:14:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-18 01:14:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2021-12-18 01:14:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 315 states have (on average 1.1746031746031746) internal successors, (370), 316 states have internal predecessors, (370), 119 states have call successors, (119), 28 states have call predecessors, (119), 37 states have return successors, (196), 127 states have call predecessors, (196), 118 states have call successors, (196) [2021-12-18 01:14:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 685 transitions. [2021-12-18 01:14:33,366 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 685 transitions. Word has length 310 [2021-12-18 01:14:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:33,367 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 685 transitions. [2021-12-18 01:14:33,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.166666666666667) internal successors, (129), 15 states have internal predecessors, (129), 6 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 5 states have call successors, (39) [2021-12-18 01:14:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 685 transitions. [2021-12-18 01:14:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-18 01:14:33,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:33,369 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:33,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:33,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-18 01:14:33,595 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1850775218, now seen corresponding path program 1 times [2021-12-18 01:14:33,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:33,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386763808] [2021-12-18 01:14:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:33,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:33,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:33,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216029252] [2021-12-18 01:14:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:33,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:33,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:33,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:33,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-18 01:14:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-18 01:14:34,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:34,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-18 01:14:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-18 01:14:34,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:34,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:34,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386763808] [2021-12-18 01:14:34,826 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216029252] [2021-12-18 01:14:34,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216029252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:34,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:34,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:14:34,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681897798] [2021-12-18 01:14:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:34,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:14:34,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:14:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:14:34,828 INFO L87 Difference]: Start difference. First operand 472 states and 685 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-18 01:14:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:35,454 INFO L93 Difference]: Finished difference Result 936 states and 1393 transitions. [2021-12-18 01:14:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:14:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 304 [2021-12-18 01:14:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:35,457 INFO L225 Difference]: With dead ends: 936 [2021-12-18 01:14:35,458 INFO L226 Difference]: Without dead ends: 512 [2021-12-18 01:14:35,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-12-18 01:14:35,460 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 111 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:35,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 3450 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:14:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-18 01:14:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 445. [2021-12-18 01:14:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 295 states have (on average 1.176271186440678) internal successors, (347), 295 states have internal predecessors, (347), 115 states have call successors, (115), 26 states have call predecessors, (115), 34 states have return successors, (181), 123 states have call predecessors, (181), 114 states have call successors, (181) [2021-12-18 01:14:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 643 transitions. [2021-12-18 01:14:35,479 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 643 transitions. Word has length 304 [2021-12-18 01:14:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:35,480 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 643 transitions. [2021-12-18 01:14:35,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-18 01:14:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 643 transitions. [2021-12-18 01:14:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-18 01:14:35,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:35,482 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:35,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-18 01:14:35,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-18 01:14:35,699 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1604575103, now seen corresponding path program 1 times [2021-12-18 01:14:35,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864878269] [2021-12-18 01:14:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:35,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:35,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:35,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880626681] [2021-12-18 01:14:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:35,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:35,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:35,753 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:35,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-18 01:14:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:36,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 184 conjunts are in the unsatisfiable core [2021-12-18 01:14:36,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:36,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:14:36,855 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3537 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3537))) is different from true [2021-12-18 01:14:36,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:14:36,966 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3538 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3538))) is different from true [2021-12-18 01:14:36,976 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3538 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3538))) is different from true [2021-12-18 01:14:37,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:14:37,088 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:14:37,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:14:37,208 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3539))) is different from true [2021-12-18 01:14:37,221 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539))) is different from true [2021-12-18 01:14:37,318 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540))) is different from true [2021-12-18 01:14:37,346 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540))) is different from true [2021-12-18 01:14:37,388 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:14:37,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-18 01:14:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 223 proven. 63 refuted. 0 times theorem prover too weak. 167 trivial. 76 not checked. [2021-12-18 01:14:37,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:14:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-12-18 01:14:39,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864878269] [2021-12-18 01:14:39,272 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880626681] [2021-12-18 01:14:39,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880626681] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:14:39,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:14:39,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 13] total 43 [2021-12-18 01:14:39,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121560327] [2021-12-18 01:14:39,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:14:39,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-18 01:14:39,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-18 01:14:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1166, Unknown=11, NotChecked=518, Total=1806 [2021-12-18 01:14:39,277 INFO L87 Difference]: Start difference. First operand 445 states and 643 transitions. Second operand has 43 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 36 states have internal predecessors, (235), 19 states have call successors, (70), 9 states have call predecessors, (70), 15 states have return successors, (66), 18 states have call predecessors, (66), 16 states have call successors, (66) [2021-12-18 01:14:39,877 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3538 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3538))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539))) (exists ((v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= 0 (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|)))) is different from true [2021-12-18 01:14:39,891 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= 0 (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|)))) is different from true [2021-12-18 01:14:39,893 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3538 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3538))) (exists ((v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540)))) is different from true [2021-12-18 01:14:40,115 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3538 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3538))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539))) (exists ((v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540)))) is different from true [2021-12-18 01:14:40,223 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_3540 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3539 (Array Int Int))) (= |c_#memory_int| (store (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3539) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3540))) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short871#1|) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= 0 (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|)))) is different from true [2021-12-18 01:14:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:42,078 INFO L93 Difference]: Finished difference Result 1051 states and 1564 transitions. [2021-12-18 01:14:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-18 01:14:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 36 states have internal predecessors, (235), 19 states have call successors, (70), 9 states have call predecessors, (70), 15 states have return successors, (66), 18 states have call predecessors, (66), 16 states have call successors, (66) Word has length 306 [2021-12-18 01:14:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:42,083 INFO L225 Difference]: With dead ends: 1051 [2021-12-18 01:14:42,084 INFO L226 Difference]: Without dead ends: 709 [2021-12-18 01:14:42,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 556 SyntacticMatches, 18 SemanticMatches, 68 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=268, Invalid=3042, Unknown=44, NotChecked=1476, Total=4830 [2021-12-18 01:14:42,086 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 420 mSDsluCounter, 7503 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 7984 SdHoareTripleChecker+Invalid, 13364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9104 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:42,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 7984 Invalid, 13364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 3862 Invalid, 0 Unknown, 9104 Unchecked, 2.1s Time] [2021-12-18 01:14:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-12-18 01:14:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 483. [2021-12-18 01:14:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 325 states have (on average 1.1753846153846155) internal successors, (382), 327 states have internal predecessors, (382), 117 states have call successors, (117), 29 states have call predecessors, (117), 40 states have return successors, (189), 126 states have call predecessors, (189), 116 states have call successors, (189) [2021-12-18 01:14:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 688 transitions. [2021-12-18 01:14:42,122 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 688 transitions. Word has length 306 [2021-12-18 01:14:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:42,123 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 688 transitions. [2021-12-18 01:14:42,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 6.0256410256410255) internal successors, (235), 36 states have internal predecessors, (235), 19 states have call successors, (70), 9 states have call predecessors, (70), 15 states have return successors, (66), 18 states have call predecessors, (66), 16 states have call successors, (66) [2021-12-18 01:14:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 688 transitions. [2021-12-18 01:14:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-18 01:14:42,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:42,128 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:42,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:42,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:42,351 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 508524123, now seen corresponding path program 1 times [2021-12-18 01:14:42,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:42,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727696680] [2021-12-18 01:14:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:42,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:42,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:42,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019779252] [2021-12-18 01:14:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:42,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:42,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:42,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:14:42,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-18 01:14:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:43,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 120 conjunts are in the unsatisfiable core [2021-12-18 01:14:43,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:45,497 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3807 Int) (v_ArrVal_3805 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3805))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3807))))) is different from true [2021-12-18 01:14:47,523 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3807 Int) (v_ArrVal_3805 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3807))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3805))))) is different from true [2021-12-18 01:14:47,617 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:14:47,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2021-12-18 01:14:47,635 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:14:47,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2021-12-18 01:14:50,251 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3811 Int) (v_ArrVal_3809 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3811))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3809))))) is different from true [2021-12-18 01:15:18,769 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3811 Int) (v_ArrVal_3809 Int)) (let ((.cse0 (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 40))) (and (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3811)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse0) 0) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3809)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse0) 0)))) is different from true [2021-12-18 01:15:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 299 proven. 35 refuted. 15 times theorem prover too weak. 148 trivial. 36 not checked. [2021-12-18 01:15:19,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:15:21,442 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3832 Int) (v_ArrVal_3831 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_176| Int)) (let ((.cse0 (+ c_s_sift_down_~queue.offset 40))) (or (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_176| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_176|) 0 v_ArrVal_3832)) c_s_sift_down_~queue.base) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_176| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_176|) 0 v_ArrVal_3831)) c_s_sift_down_~queue.base) .cse0) 0))))) is different from false [2021-12-18 01:15:21,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:15:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727696680] [2021-12-18 01:15:21,443 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:15:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019779252] [2021-12-18 01:15:21,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019779252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:15:21,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:15:21,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-18 01:15:21,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268823025] [2021-12-18 01:15:21,444 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:15:21,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 01:15:21,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:15:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 01:15:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=530, Unknown=14, NotChecked=250, Total=870 [2021-12-18 01:15:21,445 INFO L87 Difference]: Start difference. First operand 483 states and 688 transitions. Second operand has 29 states, 26 states have (on average 6.038461538461538) internal successors, (157), 27 states have internal predecessors, (157), 13 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2021-12-18 01:15:23,881 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3807 Int) (v_ArrVal_3805 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3805))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3807))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3811 Int) (v_ArrVal_3809 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3811))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3809)))))) is different from true [2021-12-18 01:16:14,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:16:14,807 INFO L93 Difference]: Finished difference Result 1344 states and 1985 transitions. [2021-12-18 01:16:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-18 01:16:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.038461538461538) internal successors, (157), 27 states have internal predecessors, (157), 13 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 308 [2021-12-18 01:16:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:16:14,813 INFO L225 Difference]: With dead ends: 1344 [2021-12-18 01:16:14,813 INFO L226 Difference]: Without dead ends: 941 [2021-12-18 01:16:14,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 357 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 87.3s TimeCoverageRelationStatistics Valid=234, Invalid=1645, Unknown=37, NotChecked=534, Total=2450 [2021-12-18 01:16:14,816 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 396 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 4418 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 10538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 4418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5906 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:16:14,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 5213 Invalid, 10538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 4418 Invalid, 0 Unknown, 5906 Unchecked, 2.7s Time] [2021-12-18 01:16:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-12-18 01:16:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 650. [2021-12-18 01:16:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 464 states have (on average 1.165948275862069) internal successors, (541), 465 states have internal predecessors, (541), 134 states have call successors, (134), 35 states have call predecessors, (134), 51 states have return successors, (252), 149 states have call predecessors, (252), 133 states have call successors, (252) [2021-12-18 01:16:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 927 transitions. [2021-12-18 01:16:14,851 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 927 transitions. Word has length 308 [2021-12-18 01:16:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:16:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 927 transitions. [2021-12-18 01:16:14,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.038461538461538) internal successors, (157), 27 states have internal predecessors, (157), 13 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2021-12-18 01:16:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 927 transitions. [2021-12-18 01:16:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-18 01:16:14,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:16:14,855 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:16:14,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-18 01:16:15,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:16:15,084 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:16:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:16:15,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1620938981, now seen corresponding path program 1 times [2021-12-18 01:16:15,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:16:15,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231592442] [2021-12-18 01:16:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:16:15,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:16:15,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:16:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811169505] [2021-12-18 01:16:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:16:15,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:16:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:16:15,138 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:16:15,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-18 01:16:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:16:15,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-18 01:16:15,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:16:15,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:16:16,276 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:16:16,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 01:16:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:22,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 01:16:22,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:22,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 01:16:24,249 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4032 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4032))) is different from true [2021-12-18 01:16:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 267 proven. 38 refuted. 3 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-18 01:16:24,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:16:25,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:16:25,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231592442] [2021-12-18 01:16:25,489 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:16:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811169505] [2021-12-18 01:16:25,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811169505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:16:25,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:16:25,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-12-18 01:16:25,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845118382] [2021-12-18 01:16:25,490 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:16:25,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-18 01:16:25,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:16:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-18 01:16:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=501, Unknown=21, NotChecked=46, Total=650 [2021-12-18 01:16:25,492 INFO L87 Difference]: Start difference. First operand 650 states and 927 transitions. Second operand has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 21 states have internal predecessors, (151), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-18 01:16:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:16:34,146 INFO L93 Difference]: Finished difference Result 1451 states and 2162 transitions. [2021-12-18 01:16:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 01:16:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 21 states have internal predecessors, (151), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) Word has length 308 [2021-12-18 01:16:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:16:34,153 INFO L225 Difference]: With dead ends: 1451 [2021-12-18 01:16:34,153 INFO L226 Difference]: Without dead ends: 923 [2021-12-18 01:16:34,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 429 SyntacticMatches, 20 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=127, Invalid=826, Unknown=43, NotChecked=60, Total=1056 [2021-12-18 01:16:34,157 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 377 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 6906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3516 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:16:34,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 3219 Invalid, 6906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 3007 Invalid, 0 Unknown, 3516 Unchecked, 1.9s Time] [2021-12-18 01:16:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-12-18 01:16:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 677. [2021-12-18 01:16:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 485 states have (on average 1.1649484536082475) internal successors, (565), 487 states have internal predecessors, (565), 136 states have call successors, (136), 37 states have call predecessors, (136), 55 states have return successors, (269), 152 states have call predecessors, (269), 135 states have call successors, (269) [2021-12-18 01:16:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 970 transitions. [2021-12-18 01:16:34,196 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 970 transitions. Word has length 308 [2021-12-18 01:16:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:16:34,197 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 970 transitions. [2021-12-18 01:16:34,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 21 states have internal predecessors, (151), 12 states have call successors, (40), 7 states have call predecessors, (40), 9 states have return successors, (37), 9 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-18 01:16:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 970 transitions. [2021-12-18 01:16:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-18 01:16:34,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:16:34,200 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:16:34,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-18 01:16:34,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-18 01:16:34,416 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:16:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:16:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 509734088, now seen corresponding path program 1 times [2021-12-18 01:16:34,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:16:34,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190684207] [2021-12-18 01:16:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:16:34,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:16:34,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:16:34,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229012621] [2021-12-18 01:16:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:16:34,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:16:34,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:16:34,472 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:16:34,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-18 01:16:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:16:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 3474 conjuncts, 260 conjunts are in the unsatisfiable core [2021-12-18 01:16:35,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:16:35,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-18 01:16:35,641 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4255 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4255))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4254)))) is different from true [2021-12-18 01:16:35,673 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4255 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4255))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4254)))) is different from true [2021-12-18 01:16:35,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:16:35,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 01:16:35,985 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_4258 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4258))) (exists ((v_ArrVal_4257 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4257))))) is different from true [2021-12-18 01:16:38,661 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4260 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4262 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4262))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4260))))) is different from true [2021-12-18 01:16:40,688 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4260 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4262 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4262))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4260))))) is different from true [2021-12-18 01:16:46,075 INFO L354 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-18 01:16:46,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 131 [2021-12-18 01:16:46,131 INFO L354 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-18 01:16:46,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 144 [2021-12-18 01:16:46,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:46,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:46,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-18 01:16:46,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-18 01:16:46,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:46,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-12-18 01:16:46,517 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:16:46,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2021-12-18 01:16:46,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-12-18 01:16:46,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:46,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-12-18 01:16:46,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:47,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-12-18 01:16:47,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:47,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-12-18 01:16:47,246 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:47,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:47,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:47,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 35 [2021-12-18 01:16:47,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:47,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 14 treesize of output 8 [2021-12-18 01:16:48,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:48,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 01:16:48,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-12-18 01:16:48,465 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:49,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:16:49,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 01:16:49,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 01:16:49,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:49,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 01:16:49,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:49,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2021-12-18 01:16:49,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 01:16:49,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:49,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 01:16:49,517 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:49,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:49,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:49,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:49,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:49,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:49,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:16:49,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:16:49,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 61 [2021-12-18 01:16:49,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:49,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-18 01:16:50,001 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 01:16:50,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 16 [2021-12-18 01:16:50,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 7 [2021-12-18 01:16:50,013 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 01:16:50,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2021-12-18 01:16:50,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:16:50,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2021-12-18 01:16:50,019 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:16:50,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-18 01:16:50,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:17:25,017 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4266 Int) (v_ArrVal_4265 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4265))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4266))))) is different from true [2021-12-18 01:17:50,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-18 01:17:50,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-18 01:17:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 277 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 69 not checked. [2021-12-18 01:17:50,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:17:53,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:17:53,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190684207] [2021-12-18 01:17:53,661 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:17:53,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229012621] [2021-12-18 01:17:53,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229012621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:17:53,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:17:53,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-12-18 01:17:53,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518830271] [2021-12-18 01:17:53,662 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:17:53,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-18 01:17:53,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:17:53,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-18 01:17:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2282, Unknown=143, NotChecked=618, Total=3192 [2021-12-18 01:17:53,665 INFO L87 Difference]: Start difference. First operand 677 states and 970 transitions. Second operand has 47 states, 40 states have (on average 4.625) internal successors, (185), 43 states have internal predecessors, (185), 19 states have call successors, (44), 6 states have call predecessors, (44), 15 states have return successors, (42), 16 states have call predecessors, (42), 19 states have call successors, (42) [2021-12-18 01:17:55,030 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4260 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4262 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4262))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4260))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4266 Int) (v_ArrVal_4265 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4265))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4266))))) (exists ((v_ArrVal_4254 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4255 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4255))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4254)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_4258 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4258))) (exists ((v_ArrVal_4257 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4257)))))) is different from true [2021-12-18 01:18:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:18:46,632 INFO L93 Difference]: Finished difference Result 1448 states and 2140 transitions. [2021-12-18 01:18:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-18 01:18:46,633 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 4.625) internal successors, (185), 43 states have internal predecessors, (185), 19 states have call successors, (44), 6 states have call predecessors, (44), 15 states have return successors, (42), 16 states have call predecessors, (42), 19 states have call successors, (42) Word has length 316 [2021-12-18 01:18:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:18:46,639 INFO L225 Difference]: With dead ends: 1448 [2021-12-18 01:18:46,639 INFO L226 Difference]: Without dead ends: 954 [2021-12-18 01:18:46,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 277 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 116.5s TimeCoverageRelationStatistics Valid=333, Invalid=5783, Unknown=232, NotChecked=1134, Total=7482 [2021-12-18 01:18:46,647 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 285 mSDsluCounter, 9087 mSDsCounter, 0 mSdLazyCounter, 5534 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 9518 SdHoareTripleChecker+Invalid, 17428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 5534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11676 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:18:46,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 9518 Invalid, 17428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 5534 Invalid, 0 Unknown, 11676 Unchecked, 3.7s Time] [2021-12-18 01:18:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-12-18 01:18:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 691. [2021-12-18 01:18:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 493 states have (on average 1.1622718052738337) internal successors, (573), 495 states have internal predecessors, (573), 141 states have call successors, (141), 39 states have call predecessors, (141), 56 states have return successors, (275), 156 states have call predecessors, (275), 140 states have call successors, (275) [2021-12-18 01:18:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 989 transitions. [2021-12-18 01:18:46,689 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 989 transitions. Word has length 316 [2021-12-18 01:18:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:18:46,690 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 989 transitions. [2021-12-18 01:18:46,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 4.625) internal successors, (185), 43 states have internal predecessors, (185), 19 states have call successors, (44), 6 states have call predecessors, (44), 15 states have return successors, (42), 16 states have call predecessors, (42), 19 states have call successors, (42) [2021-12-18 01:18:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 989 transitions. [2021-12-18 01:18:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-18 01:18:46,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:18:46,694 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:18:46,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-18 01:18:46,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-18 01:18:46,907 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:18:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:18:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1551190306, now seen corresponding path program 1 times [2021-12-18 01:18:46,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:18:46,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212017555] [2021-12-18 01:18:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:18:46,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:18:46,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:18:46,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082940150] [2021-12-18 01:18:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:18:46,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:18:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:18:46,988 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:18:46,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-18 01:18:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:18:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3479 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-18 01:18:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:18:47,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:18:48,215 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:18:48,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 01:18:55,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:18:55,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:19:08,365 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:19:08,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-18 01:19:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:08,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 01:19:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:08,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 01:19:08,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-18 01:19:08,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-12-18 01:19:10,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 01:19:10,910 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4489 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4489))) is different from true [2021-12-18 01:19:11,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2021-12-18 01:19:11,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-18 01:19:11,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 01:19:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 275 proven. 31 refuted. 3 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-18 01:19:11,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:19:12,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:19:12,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212017555] [2021-12-18 01:19:12,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:19:12,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082940150] [2021-12-18 01:19:12,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082940150] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:19:12,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:19:12,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-18 01:19:12,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294560295] [2021-12-18 01:19:12,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:19:12,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 01:19:12,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:19:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 01:19:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=685, Unknown=27, NotChecked=54, Total=870 [2021-12-18 01:19:12,336 INFO L87 Difference]: Start difference. First operand 691 states and 989 transitions. Second operand has 29 states, 26 states have (on average 6.0) internal successors, (156), 24 states have internal predecessors, (156), 14 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) [2021-12-18 01:19:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:19:26,729 INFO L93 Difference]: Finished difference Result 1495 states and 2231 transitions. [2021-12-18 01:19:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-18 01:19:26,730 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.0) internal successors, (156), 24 states have internal predecessors, (156), 14 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) Word has length 318 [2021-12-18 01:19:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:19:26,735 INFO L225 Difference]: With dead ends: 1495 [2021-12-18 01:19:26,735 INFO L226 Difference]: Without dead ends: 939 [2021-12-18 01:19:26,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 437 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=164, Invalid=1051, Unknown=49, NotChecked=68, Total=1332 [2021-12-18 01:19:26,738 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 300 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 8478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5017 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:19:26,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 4016 Invalid, 8478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 3075 Invalid, 0 Unknown, 5017 Unchecked, 2.4s Time] [2021-12-18 01:19:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-12-18 01:19:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 694. [2021-12-18 01:19:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 495 states have (on average 1.1616161616161615) internal successors, (575), 498 states have internal predecessors, (575), 141 states have call successors, (141), 39 states have call predecessors, (141), 57 states have return successors, (278), 156 states have call predecessors, (278), 140 states have call successors, (278) [2021-12-18 01:19:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 994 transitions. [2021-12-18 01:19:26,777 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 994 transitions. Word has length 318 [2021-12-18 01:19:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:19:26,778 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 994 transitions. [2021-12-18 01:19:26,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.0) internal successors, (156), 24 states have internal predecessors, (156), 14 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) [2021-12-18 01:19:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 994 transitions. [2021-12-18 01:19:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-18 01:19:26,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:19:26,782 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:19:26,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-18 01:19:27,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 01:19:27,003 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:19:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:19:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1083912211, now seen corresponding path program 1 times [2021-12-18 01:19:27,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:19:27,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122260647] [2021-12-18 01:19:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:19:27,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:19:27,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:19:27,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54140320] [2021-12-18 01:19:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:19:27,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:19:27,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:19:27,051 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:19:27,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-18 01:19:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:19:27,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 3487 conjuncts, 132 conjunts are in the unsatisfiable core [2021-12-18 01:19:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:19:27,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:19:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 01:19:28,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 01:19:28,179 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 01:19:28,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 01:19:29,085 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4716 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4716))) is different from true [2021-12-18 01:19:29,226 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:19:29,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2021-12-18 01:19:29,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-12-18 01:19:31,565 INFO L354 Elim1Store]: treesize reduction 42, result has 42.5 percent of original size [2021-12-18 01:19:31,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 448 treesize of output 462 [2021-12-18 01:20:40,559 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4718 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4718)))) is different from true [2021-12-18 01:21:04,199 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4718 Int)) (= 0 (mod (select (select (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4718)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 16)) 18446744073709551616))) is different from true [2021-12-18 01:21:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 252 proven. 139 refuted. 6 times theorem prover too weak. 112 trivial. 26 not checked. [2021-12-18 01:21:04,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:21:06,765 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4728 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_281| Int)) (not (= 0 (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_281| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_281|) 0 v_ArrVal_4728)) c_s_sift_down_~queue.base) (+ c_s_sift_down_~queue.offset 16)) 18446744073709551616)))) is different from false [2021-12-18 01:21:06,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:21:06,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122260647] [2021-12-18 01:21:06,768 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:21:06,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54140320] [2021-12-18 01:21:06,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54140320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:21:06,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:21:06,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-12-18 01:21:06,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001712910] [2021-12-18 01:21:06,768 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:21:06,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-18 01:21:06,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:21:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-18 01:21:06,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1006, Unknown=35, NotChecked=268, Total=1406 [2021-12-18 01:21:06,770 INFO L87 Difference]: Start difference. First operand 694 states and 994 transitions. Second operand has 37 states, 33 states have (on average 5.515151515151516) internal successors, (182), 34 states have internal predecessors, (182), 17 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (43), 16 states have call predecessors, (43), 17 states have call successors, (43) [2021-12-18 01:21:18,124 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4718 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4718)))) (exists ((v_ArrVal_4716 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4716))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_548| Int) (v_ArrVal_4714 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_548| v_ArrVal_4714)) (= 0 (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_548|))))) is different from true [2021-12-18 01:21:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:21:33,039 INFO L93 Difference]: Finished difference Result 1362 states and 2013 transitions. [2021-12-18 01:21:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-18 01:21:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 5.515151515151516) internal successors, (182), 34 states have internal predecessors, (182), 17 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (43), 16 states have call predecessors, (43), 17 states have call successors, (43) Word has length 321 [2021-12-18 01:21:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:21:33,046 INFO L225 Difference]: With dead ends: 1362 [2021-12-18 01:21:33,046 INFO L226 Difference]: Without dead ends: 858 [2021-12-18 01:21:33,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 342 SyntacticMatches, 26 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 119.8s TimeCoverageRelationStatistics Valid=197, Invalid=2123, Unknown=52, NotChecked=490, Total=2862 [2021-12-18 01:21:33,050 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 329 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 8294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5652 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:21:33,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 3548 Invalid, 8294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2325 Invalid, 0 Unknown, 5652 Unchecked, 1.4s Time] [2021-12-18 01:21:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-12-18 01:21:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2021-12-18 01:21:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 526 states have (on average 1.161596958174905) internal successors, (611), 529 states have internal predecessors, (611), 148 states have call successors, (148), 43 states have call predecessors, (148), 61 states have return successors, (311), 163 states have call predecessors, (311), 147 states have call successors, (311) [2021-12-18 01:21:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1070 transitions. [2021-12-18 01:21:33,124 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1070 transitions. Word has length 321 [2021-12-18 01:21:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:21:33,124 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1070 transitions. [2021-12-18 01:21:33,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 5.515151515151516) internal successors, (182), 34 states have internal predecessors, (182), 17 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (43), 16 states have call predecessors, (43), 17 states have call successors, (43) [2021-12-18 01:21:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1070 transitions. [2021-12-18 01:21:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-18 01:21:33,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:21:33,130 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:21:33,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-18 01:21:33,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 01:21:33,356 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:21:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:21:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1422310070, now seen corresponding path program 2 times [2021-12-18 01:21:33,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:21:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352239965] [2021-12-18 01:21:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:33,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:21:33,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:21:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134462206] [2021-12-18 01:21:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:21:33,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:21:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:21:33,412 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:21:33,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-18 01:21:34,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:21:34,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:21:34,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 3469 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-18 01:21:34,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:21:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 275 proven. 11 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-18 01:21:35,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:21:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 52 proven. 39 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-18 01:21:36,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:21:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352239965] [2021-12-18 01:21:36,519 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:21:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134462206] [2021-12-18 01:21:36,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134462206] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:21:36,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:21:36,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2021-12-18 01:21:36,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832936054] [2021-12-18 01:21:36,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:21:36,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-18 01:21:36,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:21:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-18 01:21:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-12-18 01:21:36,521 INFO L87 Difference]: Start difference. First operand 736 states and 1070 transitions. Second operand has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 18 states have internal predecessors, (164), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (47), 12 states have call predecessors, (47), 6 states have call successors, (47) [2021-12-18 01:21:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:21:37,230 INFO L93 Difference]: Finished difference Result 1366 states and 2006 transitions. [2021-12-18 01:21:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 01:21:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 18 states have internal predecessors, (164), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (47), 12 states have call predecessors, (47), 6 states have call successors, (47) Word has length 314 [2021-12-18 01:21:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:21:37,235 INFO L225 Difference]: With dead ends: 1366 [2021-12-18 01:21:37,235 INFO L226 Difference]: Without dead ends: 823 [2021-12-18 01:21:37,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 600 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-12-18 01:21:37,239 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 23 mSDsluCounter, 10333 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10790 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:21:37,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10790 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:21:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-12-18 01:21:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 759. [2021-12-18 01:21:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 547 states have (on average 1.1627056672760512) internal successors, (636), 549 states have internal predecessors, (636), 148 states have call successors, (148), 43 states have call predecessors, (148), 63 states have return successors, (323), 166 states have call predecessors, (323), 147 states have call successors, (323) [2021-12-18 01:21:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1107 transitions. [2021-12-18 01:21:37,282 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1107 transitions. Word has length 314 [2021-12-18 01:21:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:21:37,282 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1107 transitions. [2021-12-18 01:21:37,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 18 states have internal predecessors, (164), 7 states have call successors, (46), 3 states have call predecessors, (46), 9 states have return successors, (47), 12 states have call predecessors, (47), 6 states have call successors, (47) [2021-12-18 01:21:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1107 transitions. [2021-12-18 01:21:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-18 01:21:37,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:21:37,288 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:21:37,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-18 01:21:37,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-18 01:21:37,503 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:21:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:21:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2001593752, now seen corresponding path program 1 times [2021-12-18 01:21:37,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:21:37,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700766802] [2021-12-18 01:21:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:37,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:21:37,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:21:37,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649489537] [2021-12-18 01:21:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:37,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:21:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:21:37,569 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:21:37,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-18 01:21:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:21:38,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 3488 conjuncts, 211 conjunts are in the unsatisfiable core [2021-12-18 01:21:38,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:21:38,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-18 01:21:38,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-18 01:21:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 281 proven. 3 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-18 01:21:39,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:21:39,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:21:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700766802] [2021-12-18 01:21:39,652 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:21:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649489537] [2021-12-18 01:21:39,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649489537] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:21:39,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:21:39,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-18 01:21:39,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317976563] [2021-12-18 01:21:39,653 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:21:39,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 01:21:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:21:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 01:21:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-18 01:21:39,654 INFO L87 Difference]: Start difference. First operand 759 states and 1107 transitions. Second operand has 15 states, 12 states have (on average 11.0) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-18 01:21:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:21:40,625 INFO L93 Difference]: Finished difference Result 1378 states and 2019 transitions. [2021-12-18 01:21:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 01:21:40,626 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 11.0) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) Word has length 317 [2021-12-18 01:21:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:21:40,631 INFO L225 Difference]: With dead ends: 1378 [2021-12-18 01:21:40,631 INFO L226 Difference]: Without dead ends: 787 [2021-12-18 01:21:40,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-12-18 01:21:40,635 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 39 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:21:40,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3858 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 01:21:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-12-18 01:21:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 675. [2021-12-18 01:21:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 481 states have (on average 1.1683991683991684) internal successors, (562), 483 states have internal predecessors, (562), 137 states have call successors, (137), 38 states have call predecessors, (137), 56 states have return successors, (275), 153 states have call predecessors, (275), 136 states have call successors, (275) [2021-12-18 01:21:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 974 transitions. [2021-12-18 01:21:40,713 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 974 transitions. Word has length 317 [2021-12-18 01:21:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:21:40,714 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 974 transitions. [2021-12-18 01:21:40,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 11.0) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-18 01:21:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 974 transitions. [2021-12-18 01:21:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-18 01:21:40,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:21:40,718 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:21:40,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-18 01:21:40,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:21:40,944 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:21:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:21:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1261604647, now seen corresponding path program 1 times [2021-12-18 01:21:40,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:21:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372885781] [2021-12-18 01:21:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:40,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:21:40,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:21:40,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770211322] [2021-12-18 01:21:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:40,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:21:40,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:21:40,993 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:21:40,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-18 01:21:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:21:41,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 3459 conjuncts, 299 conjunts are in the unsatisfiable core [2021-12-18 01:21:41,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:21:41,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 01:21:42,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 01:21:42,133 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5404 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5404))) is different from true [2021-12-18 01:21:43,821 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5406 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5406)))) is different from true [2021-12-18 01:21:46,281 INFO L354 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-18 01:21:46,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 131 [2021-12-18 01:21:46,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 01:21:46,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 01:21:46,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2021-12-18 01:21:46,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-18 01:21:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:46,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:21:46,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-12-18 01:21:46,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-18 01:21:47,111 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:21:47,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-12-18 01:21:47,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-12-18 01:21:47,304 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-18 01:21:47,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2021-12-18 01:21:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:47,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-18 01:21:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:47,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2021-12-18 01:21:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:48,185 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:21:48,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 106 [2021-12-18 01:21:48,206 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:21:48,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:21:48,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 26 [2021-12-18 01:21:48,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-12-18 01:21:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-18 01:21:48,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-12-18 01:21:48,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-18 01:21:48,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:21:48,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-18 01:21:48,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 26 treesize of output 20 [2021-12-18 01:21:48,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:21:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372885781] [2021-12-18 01:21:48,830 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:21:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770211322] [2021-12-18 01:21:48,830 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-18 01:21:48,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:21:48,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-18 01:21:48,830 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-12-18 01:21:48,831 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-18 01:21:48,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 01:21:48,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-18 01:21:49,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-18 01:21:49,062 INFO L732 BasicCegarLoop]: Path program histogram: [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] [2021-12-18 01:21:49,064 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 01:21:49,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 01:21:49 BoogieIcfgContainer [2021-12-18 01:21:49,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 01:21:49,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 01:21:49,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 01:21:49,105 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 01:21:49,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:13:52" (3/4) ... [2021-12-18 01:21:49,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-18 01:21:49,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 01:21:49,108 INFO L158 Benchmark]: Toolchain (without parser) took 479926.42ms. Allocated memory was 102.8MB in the beginning and 599.8MB in the end (delta: 497.0MB). Free memory was 78.1MB in the beginning and 205.9MB in the end (delta: -127.8MB). Peak memory consumption was 369.0MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,108 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 01:21:49,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1876.70ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 77.8MB in the beginning and 79.3MB in the end (delta: -1.5MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.28ms. Allocated memory is still 138.4MB. Free memory was 79.3MB in the beginning and 68.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,109 INFO L158 Benchmark]: Boogie Preprocessor took 125.09ms. Allocated memory is still 138.4MB. Free memory was 68.9MB in the beginning and 61.3MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,109 INFO L158 Benchmark]: RCFGBuilder took 1146.00ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 61.3MB in the beginning and 87.4MB in the end (delta: -26.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,110 INFO L158 Benchmark]: TraceAbstraction took 476636.30ms. Allocated memory was 176.2MB in the beginning and 599.8MB in the end (delta: 423.6MB). Free memory was 87.4MB in the beginning and 207.0MB in the end (delta: -119.5MB). Peak memory consumption was 305.1MB. Max. memory is 16.1GB. [2021-12-18 01:21:49,110 INFO L158 Benchmark]: Witness Printer took 3.20ms. Allocated memory is still 599.8MB. Free memory was 207.0MB in the beginning and 205.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 01:21:49,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1876.70ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 77.8MB in the beginning and 79.3MB in the end (delta: -1.5MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 132.28ms. Allocated memory is still 138.4MB. Free memory was 79.3MB in the beginning and 68.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.09ms. Allocated memory is still 138.4MB. Free memory was 68.9MB in the beginning and 61.3MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1146.00ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 61.3MB in the beginning and 87.4MB in the end (delta: -26.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 476636.30ms. Allocated memory was 176.2MB in the beginning and 599.8MB in the end (delta: 423.6MB). Free memory was 87.4MB in the beginning and 207.0MB in the end (delta: -119.5MB). Peak memory consumption was 305.1MB. Max. memory is 16.1GB. * Witness Printer took 3.20ms. Allocated memory is still 599.8MB. Free memory was 207.0MB in the beginning and 205.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of large string literal at line 7793, overapproximation of __builtin_umull_overflow at line 255. Possible FailurePath: [L6915-L6920] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7360] static __thread int tl_last_error = 0; [L7792-L7940] static struct aws_error_info errors[] = { [(AWS_ERROR_SUCCESS)-0x0000] = { .literal_name = "AWS_ERROR_SUCCESS", .error_code = (AWS_ERROR_SUCCESS), .error_str = ("Success."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SUCCESS" ", " "Success.", } , [(AWS_ERROR_OOM)-0x0000] = { .literal_name = "AWS_ERROR_OOM", .error_code = (AWS_ERROR_OOM), .error_str = ("Out of memory."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OOM" ", " "Out of memory.", } , [(AWS_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_UNKNOWN", .error_code = (AWS_ERROR_UNKNOWN), .error_str = ("Unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNKNOWN" ", " "Unknown error.", } , [(AWS_ERROR_SHORT_BUFFER)-0x0000] = { .literal_name = "AWS_ERROR_SHORT_BUFFER", .error_code = (AWS_ERROR_SHORT_BUFFER), .error_str = ("Buffer is not large enough to hold result."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SHORT_BUFFER" ", " "Buffer is not large enough to hold result.", } , [(AWS_ERROR_OVERFLOW_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_OVERFLOW_DETECTED", .error_code = (AWS_ERROR_OVERFLOW_DETECTED), .error_str = ("Fixed size value overflow was detected."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OVERFLOW_DETECTED" ", " "Fixed size value overflow was detected.", } , [(AWS_ERROR_UNSUPPORTED_OPERATION)-0x0000] = { .literal_name = "AWS_ERROR_UNSUPPORTED_OPERATION", .error_code = (AWS_ERROR_UNSUPPORTED_OPERATION), .error_str = ("Unsupported operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNSUPPORTED_OPERATION" ", " "Unsupported operation.", } , [(AWS_ERROR_INVALID_BUFFER_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BUFFER_SIZE", .error_code = (AWS_ERROR_INVALID_BUFFER_SIZE), .error_str = ("Invalid buffer size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BUFFER_SIZE" ", " "Invalid buffer size.", } , [(AWS_ERROR_INVALID_HEX_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_HEX_STR", .error_code = (AWS_ERROR_INVALID_HEX_STR), .error_str = ("Invalid hex string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_HEX_STR" ", " "Invalid hex string.", } , [(AWS_ERROR_INVALID_BASE64_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BASE64_STR", .error_code = (AWS_ERROR_INVALID_BASE64_STR), .error_str = ("Invalid base64 string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BASE64_STR" ", " "Invalid base64 string.", } , [(AWS_ERROR_INVALID_INDEX)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_INDEX", .error_code = (AWS_ERROR_INVALID_INDEX), .error_str = ("Invalid index for list access."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_INDEX" ", " "Invalid index for list access.", } , [(AWS_ERROR_THREAD_INVALID_SETTINGS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INVALID_SETTINGS", .error_code = (AWS_ERROR_THREAD_INVALID_SETTINGS), .error_str = ("Invalid thread settings."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INVALID_SETTINGS" ", " "Invalid thread settings.", } , [(AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE", .error_code = (AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE), .error_str = ("Insufficent resources for thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE" ", " "Insufficent resources for thread.", } , [(AWS_ERROR_THREAD_NO_PERMISSIONS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_PERMISSIONS", .error_code = (AWS_ERROR_THREAD_NO_PERMISSIONS), .error_str = ("Insufficient permissions for thread operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_PERMISSIONS" ", " "Insufficient permissions for thread operation.", } , [(AWS_ERROR_THREAD_NOT_JOINABLE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NOT_JOINABLE", .error_code = (AWS_ERROR_THREAD_NOT_JOINABLE), .error_str = ("Thread not joinable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NOT_JOINABLE" ", " "Thread not joinable.", } , [(AWS_ERROR_THREAD_NO_SUCH_THREAD_ID)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID", .error_code = (AWS_ERROR_THREAD_NO_SUCH_THREAD_ID), .error_str = ("No such thread ID."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID" ", " "No such thread ID.", } , [(AWS_ERROR_THREAD_DEADLOCK_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_DEADLOCK_DETECTED", .error_code = (AWS_ERROR_THREAD_DEADLOCK_DETECTED), .error_str = ("Deadlock detected in thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_DEADLOCK_DETECTED" ", " "Deadlock detected in thread.", } , [(AWS_ERROR_MUTEX_NOT_INIT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_NOT_INIT", .error_code = (AWS_ERROR_MUTEX_NOT_INIT), .error_str = ("Mutex not initialized."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_NOT_INIT" ", " "Mutex not initialized.", } , [(AWS_ERROR_MUTEX_TIMEOUT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_TIMEOUT", .error_code = (AWS_ERROR_MUTEX_TIMEOUT), .error_str = ("Mutex operation timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_TIMEOUT" ", " "Mutex operation timed out.", } , [(AWS_ERROR_MUTEX_CALLER_NOT_OWNER)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_CALLER_NOT_OWNER", .error_code = (AWS_ERROR_MUTEX_CALLER_NOT_OWNER), .error_str = ("The caller of a mutex operation was not the owner."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_CALLER_NOT_OWNER" ", " "The caller of a mutex operation was not the owner.", } , [(AWS_ERROR_MUTEX_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_FAILED", .error_code = (AWS_ERROR_MUTEX_FAILED), .error_str = ("Mutex operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_FAILED" ", " "Mutex operation failed.", } , [(AWS_ERROR_COND_VARIABLE_INIT_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_INIT_FAILED", .error_code = (AWS_ERROR_COND_VARIABLE_INIT_FAILED), .error_str = ("Condition variable initialization failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_INIT_FAILED" ", " "Condition variable initialization failed.", } , [(AWS_ERROR_COND_VARIABLE_TIMED_OUT)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_TIMED_OUT", .error_code = (AWS_ERROR_COND_VARIABLE_TIMED_OUT), .error_str = ("Condition variable wait timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_TIMED_OUT" ", " "Condition variable wait timed out.", } , [(AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN", .error_code = (AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN), .error_str = ("Condition variable unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN" ", " "Condition variable unknown error.", } , [(AWS_ERROR_CLOCK_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_CLOCK_FAILURE", .error_code = (AWS_ERROR_CLOCK_FAILURE), .error_str = ("Clock operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_CLOCK_FAILURE" ", " "Clock operation failed.", } , [(AWS_ERROR_LIST_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EMPTY", .error_code = (AWS_ERROR_LIST_EMPTY), .error_str = ("Empty list."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EMPTY" ", " "Empty list.", } , [(AWS_ERROR_DEST_COPY_TOO_SMALL)-0x0000] = { .literal_name = "AWS_ERROR_DEST_COPY_TOO_SMALL", .error_code = (AWS_ERROR_DEST_COPY_TOO_SMALL), .error_str = ("Destination of copy is too small."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_DEST_COPY_TOO_SMALL" ", " "Destination of copy is too small.", } , [(AWS_ERROR_LIST_EXCEEDS_MAX_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE", .error_code = (AWS_ERROR_LIST_EXCEEDS_MAX_SIZE), .error_str = ("A requested operation on a list would exceed it's max size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE" ", " "A requested operation on a list would exceed it's max size.", } , [(AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK)-0x0000] = { .literal_name = "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK", .error_code = (AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK), .error_str = ("Attempt to shrink a list in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK" ", " "Attempt to shrink a list in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_FULL)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_FULL", .error_code = (AWS_ERROR_PRIORITY_QUEUE_FULL), .error_str = ("Attempt to add items to a full preallocated queue in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_FULL" ", " "Attempt to add items to a full preallocated queue in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_EMPTY", .error_code = (AWS_ERROR_PRIORITY_QUEUE_EMPTY), .error_str = ("Attempt to pop an item from an empty queue."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_EMPTY" ", " "Attempt to pop an item from an empty queue.", } , [(AWS_ERROR_PRIORITY_QUEUE_BAD_NODE)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE", .error_code = (AWS_ERROR_PRIORITY_QUEUE_BAD_NODE), .error_str = ("Bad node handle passed to remove."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE" ", " "Bad node handle passed to remove.", } , [(AWS_ERROR_HASHTBL_ITEM_NOT_FOUND)-0x0000] = { .literal_name = "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND", .error_code = (AWS_ERROR_HASHTBL_ITEM_NOT_FOUND), .error_str = ("Item not found in hash table."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND" ", " "Item not found in hash table.", } , [(AWS_ERROR_INVALID_DATE_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_DATE_STR", .error_code = (AWS_ERROR_INVALID_DATE_STR), .error_str = ("Date string is invalid and cannot be parsed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_DATE_STR" ", " "Date string is invalid and cannot be parsed.", } , [(AWS_ERROR_INVALID_ARGUMENT)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_ARGUMENT", .error_code = (AWS_ERROR_INVALID_ARGUMENT), .error_str = ("An invalid argument was passed to a function."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_ARGUMENT" ", " "An invalid argument was passed to a function.", } , [(AWS_ERROR_RANDOM_GEN_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_RANDOM_GEN_FAILED", .error_code = (AWS_ERROR_RANDOM_GEN_FAILED), .error_str = ("A call to the random number generator failed. Retry later."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_RANDOM_GEN_FAILED" ", " "A call to the random number generator failed. Retry later.", } , [(AWS_ERROR_MALFORMED_INPUT_STRING)-0x0000] = { .literal_name = "AWS_ERROR_MALFORMED_INPUT_STRING", .error_code = (AWS_ERROR_MALFORMED_INPUT_STRING), .error_str = ("An input string was passed to a parser and the string was incorrectly formatted."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MALFORMED_INPUT_STRING" ", " "An input string was passed to a parser and the string was incorrectly formatted.", } , [(AWS_ERROR_UNIMPLEMENTED)-0x0000] = { .literal_name = "AWS_ERROR_UNIMPLEMENTED", .error_code = (AWS_ERROR_UNIMPLEMENTED), .error_str = ("A function was called, but is not implemented."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNIMPLEMENTED" ", " "A function was called, but is not implemented.", } , [(AWS_ERROR_INVALID_STATE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_STATE", .error_code = (AWS_ERROR_INVALID_STATE), .error_str = ("An invalid state was encountered."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_STATE" ", " "An invalid state was encountered.", } , [(AWS_ERROR_ENVIRONMENT_GET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_GET", .error_code = (AWS_ERROR_ENVIRONMENT_GET), .error_str = ("System call failure when getting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_GET" ", " "System call failure when getting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_SET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_SET", .error_code = (AWS_ERROR_ENVIRONMENT_SET), .error_str = ("System call failure when setting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_SET" ", " "System call failure when setting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_UNSET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_UNSET", .error_code = (AWS_ERROR_ENVIRONMENT_UNSET), .error_str = ("System call failure when unsetting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_UNSET" ", " "System call failure when unsetting an environment variable.", } , [(AWS_ERROR_SYS_CALL_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_SYS_CALL_FAILURE", .error_code = (AWS_ERROR_SYS_CALL_FAILURE), .error_str = ("System call failure"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SYS_CALL_FAILURE" ", " "System call failure", } , [(AWS_ERROR_FILE_INVALID_PATH)-0x0000] = { .literal_name = "AWS_ERROR_FILE_INVALID_PATH", .error_code = (AWS_ERROR_FILE_INVALID_PATH), .error_str = ("Invalid file path."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_FILE_INVALID_PATH" ", " "Invalid file path.", } , [(AWS_ERROR_MAX_FDS_EXCEEDED)-0x0000] = { .literal_name = "AWS_ERROR_MAX_FDS_EXCEEDED", .error_code = (AWS_ERROR_MAX_FDS_EXCEEDED), .error_str = ("The maximum number of fds has been exceeded."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MAX_FDS_EXCEEDED" ", " "The maximum number of fds has been exceeded.", } , [(AWS_ERROR_NO_PERMISSION)-0x0000] = { .literal_name = "AWS_ERROR_NO_PERMISSION", .error_code = (AWS_ERROR_NO_PERMISSION), .error_str = ("User does not have permission to perform the requested action."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_NO_PERMISSION" ", " "User does not have permission to perform the requested action.", } , [(AWS_ERROR_STREAM_UNSEEKABLE)-0x0000] = { .literal_name = "AWS_ERROR_STREAM_UNSEEKABLE", .error_code = (AWS_ERROR_STREAM_UNSEEKABLE), .error_str = ("Stream does not support seek operations"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_STREAM_UNSEEKABLE" ", " "Stream does not support seek operations", } , }; [L7943-L7946] static struct aws_error_info_list s_list = { .error_list = errors, .count = (sizeof(errors) / sizeof((errors)[0])), }; [L7948-L7957] static struct aws_log_subject_info s_common_log_subject_infos[] = { { .subject_id = (AWS_LS_COMMON_GENERAL), .subject_name = ("aws-c-common"), .subject_description = ("Subject for aws-c-common logging that doesn't belong to any particular category") } , { .subject_id = (AWS_LS_COMMON_TASK_SCHEDULER), .subject_name = ("task-scheduler"), .subject_description = ("Subject for task scheduler or task specific logging.") } , }; [L7959-L7962] static struct aws_log_subject_info_list s_common_log_subject_list = { .subject_list = s_common_log_subject_infos, .count = (sizeof(s_common_log_subject_infos) / sizeof((s_common_log_subject_infos)[0])), }; [L7964-L7968] static _Bool s_common_library_initialized = 0 ; [L8486] CALL aws_priority_queue_s_sift_down_harness() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8456] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8456] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8456] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8456] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8456] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8456] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8457] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8457] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8457] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8457] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8457] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8457] RET, EXPR nondet_size_t() [L8456-L8457] struct aws_priority_queue queue = {0, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}, {0, nondet_size_t(), nondet_size_t(), nondet_size_t(), 0}}; [L8460] CALL, EXPR aws_priority_queue_is_bounded(&queue, 5, 2) [L6791] CALL, EXPR aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size) [L6735] EXPR list->item_size [L6734-L6735] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L6738] EXPR list->length [L6737-L6738] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L6739] return item_size_is_bounded && length_is_bounded; [L6791] RET, EXPR aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size) [L6789-L6791] _Bool container_is_bounded = aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size); [L6798-L6799] CALL, EXPR aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)) [L6735] EXPR list->item_size [L6734-L6735] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L6738] EXPR list->length [L6737-L6738] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L6739] return item_size_is_bounded && length_is_bounded; [L6798-L6799] RET, EXPR aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)) [L6797-L6799] _Bool backpointers_list_is_bounded = aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)); [L6800] return container_is_bounded && backpointers_list_is_bounded; [L8460] RET, EXPR aws_priority_queue_is_bounded(&queue, 5, 2) [L8460] CALL assume_abort_if_not(aws_priority_queue_is_bounded(&queue, 5, 2)) [L211] COND FALSE !(!cond) [L8460] RET assume_abort_if_not(aws_priority_queue_is_bounded(&queue, 5, 2)) [L8461] CALL ensure_priority_queue_has_allocated_members(&queue) [L6804] CALL ensure_array_list_has_allocated_data_member(&queue->container) [L6743] EXPR list->current_size [L6743] list->current_size == 0 && list->length == 0 [L6743] EXPR list->length [L6743] list->current_size == 0 && list->length == 0 [L6743] COND TRUE list->current_size == 0 && list->length == 0 [L6744] EXPR list->data [L6744-L6746] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L6744-L6746] RET assume_abort_if_not(list->data == ((void *)0) ) [L6747] CALL, EXPR can_fail_allocator() [L6939] return &s_can_fail_allocator_static; [L6747] RET, EXPR can_fail_allocator() [L6747] list->alloc = can_fail_allocator() [L6804] RET ensure_array_list_has_allocated_data_member(&queue->container) [L6805] CALL ensure_array_list_has_allocated_data_member(&queue->backpointers) [L6743] EXPR list->current_size [L6743] list->current_size == 0 && list->length == 0 [L6743] EXPR list->length [L6743] list->current_size == 0 && list->length == 0 [L6743] COND TRUE list->current_size == 0 && list->length == 0 [L6744] EXPR list->data [L6744-L6746] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L6744-L6746] RET assume_abort_if_not(list->data == ((void *)0) ) [L6747] CALL, EXPR can_fail_allocator() [L6939] return &s_can_fail_allocator_static; [L6747] RET, EXPR can_fail_allocator() [L6747] list->alloc = can_fail_allocator() [L6805] RET ensure_array_list_has_allocated_data_member(&queue->backpointers) [L6806] queue->pred = nondet_compare [L8461] RET ensure_priority_queue_has_allocated_members(&queue) [L8464] CALL, EXPR aws_priority_queue_is_valid(&queue) [L8284] COND FALSE !(!queue) [L8291] EXPR queue->pred [L8290-L8293] _Bool pred_is_valid = (queue->pred != ((void *)0) ); [L8296] CALL, EXPR aws_array_list_is_valid(&queue->container) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2957] EXPR list->current_size [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8296] RET, EXPR aws_array_list_is_valid(&queue->container) [L8295-L8296] _Bool container_is_valid = aws_array_list_is_valid(&queue->container); [L8300] CALL, EXPR aws_priority_queue_backpointers_valid(queue) [L8225] COND FALSE !(!queue) [L8235] CALL, EXPR aws_array_list_is_valid(&queue->backpointers) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8235] RET, EXPR aws_array_list_is_valid(&queue->backpointers) [L8235] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8235] EXPR queue->backpointers.current_size [L8235] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8235-L8238] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ) [L8233-L8238] _Bool backpointer_list_is_valid = ((aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ))); [L8246] EXPR queue->backpointers.item_size [L8245-L8246] _Bool backpointer_list_item_size = queue->backpointers.item_size == sizeof(struct aws_priority_queue_node *); [L8249] EXPR queue->backpointers.length [L8249] EXPR queue->container.length [L8248-L8249] _Bool lists_equal_lengths = queue->backpointers.length == queue->container.length; [L8252] EXPR queue->backpointers.current_size [L8251-L8252] _Bool backpointers_non_zero_current_size = queue->backpointers.current_size > 0; [L8260-L8263] _Bool backpointers_valid_deep = 1 ; [L8268] EXPR queue->backpointers.current_size [L8268] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 [L8268] EXPR queue->backpointers.length [L8268] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 [L8268-L8269] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) [L8268] EXPR queue->backpointers.data [L8268-L8269] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) [L8266-L8270] _Bool backpointers_zero = (queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) ); [L8272-L8275] _Bool backpointer_struct_is_valid = backpointers_zero || (backpointer_list_item_size && lists_equal_lengths && backpointers_non_zero_current_size && backpointers_valid_deep); [L8277] EXPR (backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L8277] CALL, EXPR aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 [L2337] COND FALSE !(i < bufsize) [L2345-L2347] return 1 ; [L8277] RET, EXPR aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L8277] EXPR (backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L8277] return ((backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers))); [L8300] RET, EXPR aws_priority_queue_backpointers_valid(queue) [L8299-L8300] _Bool backpointers_valid = aws_priority_queue_backpointers_valid(queue); [L8301] return pred_is_valid && container_is_valid && backpointers_valid; [L8464] RET, EXPR aws_priority_queue_is_valid(&queue) [L8464] CALL assume_abort_if_not(aws_priority_queue_is_valid(&queue)) [L211] COND FALSE !(!cond) [L8464] RET assume_abort_if_not(aws_priority_queue_is_valid(&queue)) [L8465] CALL, EXPR nondet_size_t() [L263] return __VERIFIER_nondet_ulong(); [L8465] RET, EXPR nondet_size_t() [L8465] size_t root = nondet_size_t(); [L8466] EXPR queue.container.length [L8466] CALL assume_abort_if_not(root < queue.container.length) [L211] COND FALSE !(!cond) [L8466] RET assume_abort_if_not(root < queue.container.length) [L8468] queue.backpointers.data [L8468] COND FALSE !(queue.backpointers.data) [L8480] CALL s_sift_down(&queue, root) [L8019] CALL, EXPR aws_priority_queue_is_valid(queue) [L8284] COND FALSE !(!queue) [L8291] EXPR queue->pred [L8290-L8293] _Bool pred_is_valid = (queue->pred != ((void *)0) ); [L8296] CALL, EXPR aws_array_list_is_valid(&queue->container) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2957] EXPR list->current_size [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2957] EXPR list->data [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8296] RET, EXPR aws_array_list_is_valid(&queue->container) [L8295-L8296] _Bool container_is_valid = aws_array_list_is_valid(&queue->container); [L8300] CALL, EXPR aws_priority_queue_backpointers_valid(queue) [L8225] COND FALSE !(!queue) [L8235] CALL, EXPR aws_array_list_is_valid(&queue->backpointers) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2957] EXPR list->current_size [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2957] EXPR list->data [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8235] RET, EXPR aws_array_list_is_valid(&queue->backpointers) [L8235] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8235] EXPR queue->backpointers.current_size [L8235] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8235-L8238] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ) [L8236] EXPR queue->backpointers.data [L8235-L8238] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ) [L8233-L8238] _Bool backpointer_list_is_valid = ((aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ))); [L8246] EXPR queue->backpointers.item_size [L8245-L8246] _Bool backpointer_list_item_size = queue->backpointers.item_size == sizeof(struct aws_priority_queue_node *); [L8249] EXPR queue->backpointers.length [L8249] EXPR queue->container.length [L8248-L8249] _Bool lists_equal_lengths = queue->backpointers.length == queue->container.length; [L8252] EXPR queue->backpointers.current_size [L8251-L8252] _Bool backpointers_non_zero_current_size = queue->backpointers.current_size > 0; [L8260-L8263] _Bool backpointers_valid_deep = 1 ; [L8268] EXPR queue->backpointers.current_size [L8268] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 [L8268-L8269] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) [L8266-L8270] _Bool backpointers_zero = (queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) ); [L8272-L8275] _Bool backpointer_struct_is_valid = backpointers_zero || (backpointer_list_item_size && lists_equal_lengths && backpointers_non_zero_current_size && backpointers_valid_deep); [L8277] EXPR (backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L8277] return ((backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers))); [L8300] RET, EXPR aws_priority_queue_backpointers_valid(queue) [L8299-L8300] _Bool backpointers_valid = aws_priority_queue_backpointers_valid(queue); [L8301] return pred_is_valid && container_is_valid && backpointers_valid; [L8019] RET, EXPR aws_priority_queue_is_valid(queue) [L8019] CALL assume_abort_if_not((aws_priority_queue_is_valid(queue))) [L211] COND FALSE !(!cond) [L8019] RET assume_abort_if_not((aws_priority_queue_is_valid(queue))) [L8020] EXPR queue->container.length [L8020] CALL assume_abort_if_not((root < queue->container.length)) [L211] COND FALSE !(!cond) [L8020] RET assume_abort_if_not((root < queue->container.length)) [L8023-L8026] _Bool did_move = 0 ; [L8028] CALL aws_array_list_length(&queue->container) [L3169] EXPR list->length [L3169] EXPR !list->length || list->data [L3169] EXPR list->data [L3169] EXPR !list->length || list->data [L3169] CALL assume_abort_if_not((!list->length || list->data)) [L211] COND FALSE !(!cond) [L3169] RET assume_abort_if_not((!list->length || list->data)) [L3170] CALL, EXPR aws_array_list_is_valid(list) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2957] EXPR list->current_size [L2957] EXPR (((list->current_size)) == 0) || ((list->data)) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3170] RET, EXPR aws_array_list_is_valid(list) [L3170] CALL assume_abort_if_not((aws_array_list_is_valid(list))) [L211] COND FALSE !(!cond) [L3170] RET assume_abort_if_not((aws_array_list_is_valid(list))) [L3171] EXPR list->length [L3171] size_t len = list->length; [L3172] CALL, EXPR aws_array_list_is_valid(list) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3172] RET, EXPR aws_array_list_is_valid(list) [L3172] CALL __VERIFIER_assert((aws_array_list_is_valid(list))) [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 24 procedures, 326 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 476.5s, OverallIterations: 31, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 171.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7623 SdHoareTripleChecker+Valid, 24.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7069 mSDsluCounter, 108080 SdHoareTripleChecker+Invalid, 20.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 46947 IncrementalHoareTripleChecker+Unchecked, 95356 mSDsCounter, 2867 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34653 IncrementalHoareTripleChecker+Invalid, 84467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2867 mSolverCounterUnsat, 12724 mSDtfsCounter, 34653 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10047 GetRequests, 9279 SyntacticMatches, 114 SemanticMatches, 654 ConstructedPredicates, 36 IntricatePredicates, 0 DeprecatedPredicates, 4083 ImplicationChecksByTransitivity, 378.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=759occurred in iteration=29, InterpolantAutomatonStates: 484, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 30 MinimizatonAttempts, 2266 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.3s SsaConstructionTime, 11.8s SatisfiabilityAnalysisTime, 276.6s InterpolantComputationTime, 8879 NumberOfCodeBlocks, 8879 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 9465 ConstructedInterpolants, 560 QuantifiedInterpolants, 27389 SizeOfPredicates, 422 NumberOfNonLiveVariables, 97148 ConjunctsInSsa, 1863 ConjunctsInUnsatCore, 35 InterpolantComputations, 20 PerfectInterpolantSequences, 15098/15771 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-18 01:21:49,323 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-12-18 01:21:49,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:21:51,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:21:51,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:21:51,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:21:51,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:21:51,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:21:51,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:21:51,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:21:51,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:21:51,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:21:51,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:21:51,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:21:51,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:21:51,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:21:51,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:21:51,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:21:51,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:21:51,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:21:51,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:21:51,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:21:51,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:21:51,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:21:51,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:21:51,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:21:51,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:21:51,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:21:51,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:21:51,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:21:51,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:21:51,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:21:51,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:21:51,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:21:51,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:21:51,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:21:51,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:21:51,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:21:51,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:21:51,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:21:51,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:21:51,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:21:51,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:21:51,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-18 01:21:51,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:21:51,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:21:51,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:21:51,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:21:51,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:21:51,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:21:51,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:21:51,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:21:51,211 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:21:51,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:21:51,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:21:51,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:21:51,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:21:51,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:21:51,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:21:51,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:21:51,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:21:51,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:21:51,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:21:51,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:21:51,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:21:51,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:21:51,215 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 01:21:51,215 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 01:21:51,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:21:51,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:21:51,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:21:51,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:21:51,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 01:21:51,216 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-12-18 01:21:51,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:21:51,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:21:51,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:21:51,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:21:51,543 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:21:51,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:21:51,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e00e78fd/5c7e0060105748a2b995d04690271e65/FLAG5a7c53917 [2021-12-18 01:21:52,284 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:21:52,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:21:52,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e00e78fd/5c7e0060105748a2b995d04690271e65/FLAG5a7c53917 [2021-12-18 01:21:52,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e00e78fd/5c7e0060105748a2b995d04690271e65 [2021-12-18 01:21:52,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:21:52,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:21:52,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:21:52,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:21:52,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:21:52,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:21:52" (1/1) ... [2021-12-18 01:21:52,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db9f6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:52, skipping insertion in model container [2021-12-18 01:21:52,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:21:52" (1/1) ... [2021-12-18 01:21:52,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:21:52,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:21:52,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-18 01:21:52,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-18 01:21:53,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:21:53,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:21:53,714 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:21:53,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:21:53,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:21:53,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:21:53,719 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:21:53,719 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:21:53,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:21:53,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:21:53,820 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:21:53,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:53,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:21:54,050 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 01:21:54,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:21:54,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-18 01:21:54,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-18 01:21:54,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:21:54,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:21:54,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:21:54,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:21:54,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:21:54,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:21:54,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:21:54,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:21:54,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:21:54,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:21:54,250 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:21:54,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:21:54,340 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:21:54,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-18 01:21:54,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-18 01:21:54,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:21:54,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:21:54,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:21:54,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:21:54,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:21:54,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:21:54,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:21:54,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:21:54,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:21:54,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:21:54,472 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:21:54,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,492 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:21:54,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:21:54,862 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:21:54,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54 WrapperNode [2021-12-18 01:21:54,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:21:54,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:21:54,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:21:54,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:21:54,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:54,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,037 INFO L137 Inliner]: procedures = 717, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 834 [2021-12-18 01:21:55,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:21:55,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:21:55,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:21:55,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:21:55,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:21:55,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:21:55,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:21:55,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:21:55,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (1/1) ... [2021-12-18 01:21:55,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:21:55,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:21:55,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 01:21:55,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 01:21:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-18 01:21:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-18 01:21:55,210 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-18 01:21:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-18 01:21:55,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:21:55,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-18 01:21:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-18 01:21:55,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-18 01:21:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-18 01:21:55,211 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:21:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:21:55,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 01:21:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-18 01:21:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-18 01:21:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:21:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:21:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:21:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:21:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 01:21:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 01:21:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:21:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:21:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:21:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-18 01:21:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-18 01:21:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:21:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:21:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:21:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:21:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-18 01:21:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-18 01:21:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-18 01:21:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-18 01:21:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-18 01:21:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-18 01:21:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:21:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:21:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-18 01:21:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-18 01:21:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-18 01:21:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-18 01:21:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:21:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:21:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-18 01:21:55,217 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2021-12-18 01:21:55,218 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2021-12-18 01:21:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:21:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-18 01:21:55,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-18 01:21:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:21:55,219 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:21:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-18 01:21:55,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-18 01:21:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:21:55,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:21:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:21:55,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:21:55,550 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:21:55,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:21:57,170 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:21:57,187 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:21:57,187 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 01:21:57,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:21:57 BoogieIcfgContainer [2021-12-18 01:21:57,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:21:57,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:21:57,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:21:57,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:21:57,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:21:52" (1/3) ... [2021-12-18 01:21:57,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b688e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:21:57, skipping insertion in model container [2021-12-18 01:21:57,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:21:54" (2/3) ... [2021-12-18 01:21:57,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b688e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:21:57, skipping insertion in model container [2021-12-18 01:21:57,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:21:57" (3/3) ... [2021-12-18 01:21:57,200 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-12-18 01:21:57,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:21:57,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:21:57,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:21:57,260 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 01:21:57,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:21:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-18 01:21:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 01:21:57,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:21:57,309 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:21:57,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:21:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:21:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1926734945, now seen corresponding path program 1 times [2021-12-18 01:21:57,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:21:57,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842587220] [2021-12-18 01:21:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:57,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:21:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:21:57,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:21:57,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 01:21:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:21:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 01:21:58,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:21:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-18 01:21:58,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:21:58,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:21:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842587220] [2021-12-18 01:21:58,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842587220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:21:58,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:21:58,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 01:21:58,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063874005] [2021-12-18 01:21:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:21:58,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 01:21:58,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:21:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 01:21:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:21:58,502 INFO L87 Difference]: Start difference. First operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:21:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:21:58,555 INFO L93 Difference]: Finished difference Result 625 states and 944 transitions. [2021-12-18 01:21:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 01:21:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2021-12-18 01:21:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:21:58,568 INFO L225 Difference]: With dead ends: 625 [2021-12-18 01:21:58,568 INFO L226 Difference]: Without dead ends: 319 [2021-12-18 01:21:58,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:21:58,577 INFO L933 BasicCegarLoop]: 442 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, 442 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:21:58,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:21:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-18 01:21:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-12-18 01:21:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-18 01:21:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2021-12-18 01:21:58,638 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 156 [2021-12-18 01:21:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:21:58,639 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2021-12-18 01:21:58,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:21:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2021-12-18 01:21:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 01:21:58,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:21:58,643 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:21:58,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-18 01:21:58,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:21:58,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:21:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:21:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash -860999513, now seen corresponding path program 1 times [2021-12-18 01:21:58,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:21:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572535027] [2021-12-18 01:21:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:21:58,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:21:58,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:21:58,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:21:58,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 01:21:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:21:59,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:21:59,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:21:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:21:59,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:21:59,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:21:59,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572535027] [2021-12-18 01:21:59,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572535027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:21:59,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:21:59,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:21:59,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759236238] [2021-12-18 01:21:59,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:21:59,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:21:59,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:21:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:21:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:21:59,994 INFO L87 Difference]: Start difference. First operand 319 states and 437 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 01:22:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:00,316 INFO L93 Difference]: Finished difference Result 592 states and 816 transitions. [2021-12-18 01:22:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:22:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2021-12-18 01:22:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:00,322 INFO L225 Difference]: With dead ends: 592 [2021-12-18 01:22:00,322 INFO L226 Difference]: Without dead ends: 321 [2021-12-18 01:22:00,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:22:00,325 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 47 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:00,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1582 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:22:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-18 01:22:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-12-18 01:22:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 192 states have (on average 1.203125) internal successors, (231), 194 states have internal predecessors, (231), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2021-12-18 01:22:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2021-12-18 01:22:00,354 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 156 [2021-12-18 01:22:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:00,355 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2021-12-18 01:22:00,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 01:22:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2021-12-18 01:22:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 01:22:00,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:00,357 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:00,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:00,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:00,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1740163981, now seen corresponding path program 1 times [2021-12-18 01:22:00,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:00,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77026071] [2021-12-18 01:22:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:00,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:00,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:00,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 01:22:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:01,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:22:01,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:22:01,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:01,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77026071] [2021-12-18 01:22:01,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77026071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:01,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:01,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:22:01,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669950151] [2021-12-18 01:22:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:22:01,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:22:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:22:01,672 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 01:22:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:02,347 INFO L93 Difference]: Finished difference Result 615 states and 863 transitions. [2021-12-18 01:22:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:22:02,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2021-12-18 01:22:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:02,352 INFO L225 Difference]: With dead ends: 615 [2021-12-18 01:22:02,352 INFO L226 Difference]: Without dead ends: 342 [2021-12-18 01:22:02,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:22:02,354 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 99 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:02,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 2290 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:22:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-18 01:22:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2021-12-18 01:22:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-18 01:22:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2021-12-18 01:22:02,374 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 164 [2021-12-18 01:22:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:02,374 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2021-12-18 01:22:02,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 01:22:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2021-12-18 01:22:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-18 01:22:02,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:02,377 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:02,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:02,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:02,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2064550921, now seen corresponding path program 1 times [2021-12-18 01:22:02,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117691780] [2021-12-18 01:22:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:02,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:02,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:02,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:02,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 01:22:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:03,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:22:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 01:22:03,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:03,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:03,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117691780] [2021-12-18 01:22:03,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117691780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:03,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:03,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:22:03,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144686238] [2021-12-18 01:22:03,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:03,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:22:03,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:22:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:22:03,838 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 01:22:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:04,295 INFO L93 Difference]: Finished difference Result 640 states and 912 transitions. [2021-12-18 01:22:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:22:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2021-12-18 01:22:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:04,300 INFO L225 Difference]: With dead ends: 640 [2021-12-18 01:22:04,300 INFO L226 Difference]: Without dead ends: 348 [2021-12-18 01:22:04,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:22:04,302 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 70 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:04,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1949 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:22:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-12-18 01:22:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2021-12-18 01:22:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-18 01:22:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2021-12-18 01:22:04,321 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 179 [2021-12-18 01:22:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:04,322 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2021-12-18 01:22:04,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 01:22:04,322 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2021-12-18 01:22:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 01:22:04,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:04,325 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:04,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:04,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:04,544 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 587208436, now seen corresponding path program 1 times [2021-12-18 01:22:04,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:04,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627894919] [2021-12-18 01:22:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:04,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:04,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:04,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 01:22:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:22:05,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-18 01:22:05,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:05,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627894919] [2021-12-18 01:22:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627894919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:05,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:05,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:22:05,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41269831] [2021-12-18 01:22:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:05,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:22:05,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:22:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:22:05,891 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:22:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:06,802 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2021-12-18 01:22:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:22:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2021-12-18 01:22:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:06,806 INFO L225 Difference]: With dead ends: 662 [2021-12-18 01:22:06,806 INFO L226 Difference]: Without dead ends: 370 [2021-12-18 01:22:06,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:22:06,808 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 142 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:06,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2667 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 01:22:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-18 01:22:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 352. [2021-12-18 01:22:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 218 states have (on average 1.224770642201835) internal successors, (267), 220 states have internal predecessors, (267), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2021-12-18 01:22:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 495 transitions. [2021-12-18 01:22:06,840 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 495 transitions. Word has length 195 [2021-12-18 01:22:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:06,842 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 495 transitions. [2021-12-18 01:22:06,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:22:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 495 transitions. [2021-12-18 01:22:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 01:22:06,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:06,846 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:06,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:07,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:07,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1829094874, now seen corresponding path program 2 times [2021-12-18 01:22:07,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290901560] [2021-12-18 01:22:07,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:22:07,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:07,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:07,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 01:22:10,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:22:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:22:10,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:22:10,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-18 01:22:10,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:10,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:10,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290901560] [2021-12-18 01:22:10,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290901560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:10,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:10,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:22:10,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857279626] [2021-12-18 01:22:10,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:10,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:22:10,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:22:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:22:10,991 INFO L87 Difference]: Start difference. First operand 352 states and 495 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:13,850 INFO L93 Difference]: Finished difference Result 692 states and 993 transitions. [2021-12-18 01:22:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:22:13,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2021-12-18 01:22:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:13,854 INFO L225 Difference]: With dead ends: 692 [2021-12-18 01:22:13,854 INFO L226 Difference]: Without dead ends: 388 [2021-12-18 01:22:13,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:22:13,857 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 21 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:13,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2020 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-18 01:22:13,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-18 01:22:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 360. [2021-12-18 01:22:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 226 states have (on average 1.2256637168141593) internal successors, (277), 228 states have internal predecessors, (277), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2021-12-18 01:22:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 505 transitions. [2021-12-18 01:22:13,876 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 505 transitions. Word has length 210 [2021-12-18 01:22:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:13,876 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 505 transitions. [2021-12-18 01:22:13,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 505 transitions. [2021-12-18 01:22:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 01:22:13,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:13,879 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:13,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:14,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:14,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash -731767972, now seen corresponding path program 1 times [2021-12-18 01:22:14,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:14,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237417360] [2021-12-18 01:22:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:14,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:14,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:14,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:14,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 01:22:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:15,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:22:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-18 01:22:15,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:15,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:15,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237417360] [2021-12-18 01:22:15,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237417360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:15,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:15,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:22:15,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917962277] [2021-12-18 01:22:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:15,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:22:15,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:15,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:22:15,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:22:15,969 INFO L87 Difference]: Start difference. First operand 360 states and 505 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:18,854 INFO L93 Difference]: Finished difference Result 702 states and 1003 transitions. [2021-12-18 01:22:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 01:22:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2021-12-18 01:22:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:18,861 INFO L225 Difference]: With dead ends: 702 [2021-12-18 01:22:18,861 INFO L226 Difference]: Without dead ends: 390 [2021-12-18 01:22:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:22:18,863 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 17 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2443 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-18 01:22:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-18 01:22:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 364. [2021-12-18 01:22:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 232 states have internal predecessors, (281), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2021-12-18 01:22:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 509 transitions. [2021-12-18 01:22:18,879 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 509 transitions. Word has length 210 [2021-12-18 01:22:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:18,880 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 509 transitions. [2021-12-18 01:22:18,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 509 transitions. [2021-12-18 01:22:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 01:22:18,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:18,883 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:18,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:19,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:19,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1652156766, now seen corresponding path program 1 times [2021-12-18 01:22:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:19,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914044227] [2021-12-18 01:22:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:19,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:19,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:19,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 01:22:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:20,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-18 01:22:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:29,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-12-18 01:22:29,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-18 01:22:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 01:22:29,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:29,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914044227] [2021-12-18 01:22:29,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914044227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:29,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:29,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:22:29,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542898454] [2021-12-18 01:22:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:29,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:22:29,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:22:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=87, Unknown=1, NotChecked=0, Total=110 [2021-12-18 01:22:29,665 INFO L87 Difference]: Start difference. First operand 364 states and 509 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:22:47,200 WARN L227 SmtUtils]: Spent 12.08s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 01:22:49,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:22:51,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:22:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:52,469 INFO L93 Difference]: Finished difference Result 693 states and 981 transitions. [2021-12-18 01:22:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:22:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 210 [2021-12-18 01:22:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:52,475 INFO L225 Difference]: With dead ends: 693 [2021-12-18 01:22:52,475 INFO L226 Difference]: Without dead ends: 408 [2021-12-18 01:22:52,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=70, Invalid=233, Unknown=3, NotChecked=0, Total=306 [2021-12-18 01:22:52,477 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 74 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:52,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 3171 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 345 Invalid, 2 Unknown, 76 Unchecked, 5.8s Time] [2021-12-18 01:22:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-18 01:22:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 390. [2021-12-18 01:22:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 250 states have (on average 1.216) internal successors, (304), 252 states have internal predecessors, (304), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2021-12-18 01:22:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 544 transitions. [2021-12-18 01:22:52,497 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 544 transitions. Word has length 210 [2021-12-18 01:22:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:52,501 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 544 transitions. [2021-12-18 01:22:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-18 01:22:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 544 transitions. [2021-12-18 01:22:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 01:22:52,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:52,505 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:52,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:52,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:52,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1856160476, now seen corresponding path program 1 times [2021-12-18 01:22:52,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:52,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471483689] [2021-12-18 01:22:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:52,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:52,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:52,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 01:22:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:53,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:22:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-18 01:22:54,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:54,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471483689] [2021-12-18 01:22:54,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471483689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:54,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:54,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:22:54,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140676566] [2021-12-18 01:22:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:54,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:22:54,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:22:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:22:54,081 INFO L87 Difference]: Start difference. First operand 390 states and 544 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:54,241 INFO L93 Difference]: Finished difference Result 738 states and 1052 transitions. [2021-12-18 01:22:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:22:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2021-12-18 01:22:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:54,248 INFO L225 Difference]: With dead ends: 738 [2021-12-18 01:22:54,248 INFO L226 Difference]: Without dead ends: 410 [2021-12-18 01:22:54,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:22:54,252 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 8 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:54,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1782 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:22:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-18 01:22:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 398. [2021-12-18 01:22:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 260 states have internal predecessors, (313), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2021-12-18 01:22:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 553 transitions. [2021-12-18 01:22:54,272 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 553 transitions. Word has length 210 [2021-12-18 01:22:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:54,273 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 553 transitions. [2021-12-18 01:22:54,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 01:22:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 553 transitions. [2021-12-18 01:22:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-18 01:22:54,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:54,276 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:54,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:54,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1292849073, now seen corresponding path program 1 times [2021-12-18 01:22:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:54,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412900192] [2021-12-18 01:22:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:54,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:54,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:54,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-18 01:22:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:55,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:22:55,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 01:22:55,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:55,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:55,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412900192] [2021-12-18 01:22:55,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412900192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:55,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:55,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:22:55,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753516571] [2021-12-18 01:22:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:55,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:22:55,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:22:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:22:55,941 INFO L87 Difference]: Start difference. First operand 398 states and 553 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:22:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:56,468 INFO L93 Difference]: Finished difference Result 702 states and 987 transitions. [2021-12-18 01:22:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:22:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 212 [2021-12-18 01:22:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:56,471 INFO L225 Difference]: With dead ends: 702 [2021-12-18 01:22:56,472 INFO L226 Difference]: Without dead ends: 400 [2021-12-18 01:22:56,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:22:56,474 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 82 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:56,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2330 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:22:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-18 01:22:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-12-18 01:22:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 259 states have (on average 1.2123552123552124) internal successors, (314), 262 states have internal predecessors, (314), 110 states have call successors, (110), 26 states have call predecessors, (110), 30 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2021-12-18 01:22:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 556 transitions. [2021-12-18 01:22:56,489 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 556 transitions. Word has length 212 [2021-12-18 01:22:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:56,490 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 556 transitions. [2021-12-18 01:22:56,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:22:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 556 transitions. [2021-12-18 01:22:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 01:22:56,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:56,492 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:56,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:56,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:56,708 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1705802895, now seen corresponding path program 1 times [2021-12-18 01:22:56,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546533899] [2021-12-18 01:22:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:56,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:56,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:56,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-18 01:22:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:58,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:22:58,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-18 01:22:58,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:22:58,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:22:58,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546533899] [2021-12-18 01:22:58,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546533899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:22:58,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:22:58,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:22:58,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554785178] [2021-12-18 01:22:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:22:58,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:22:58,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:22:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:22:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:22:58,539 INFO L87 Difference]: Start difference. First operand 400 states and 556 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 01:22:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:59,225 INFO L93 Difference]: Finished difference Result 707 states and 994 transitions. [2021-12-18 01:22:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:22:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 235 [2021-12-18 01:22:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:59,228 INFO L225 Difference]: With dead ends: 707 [2021-12-18 01:22:59,229 INFO L226 Difference]: Without dead ends: 403 [2021-12-18 01:22:59,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:22:59,231 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 105 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:59,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 2680 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:22:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-18 01:22:59,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2021-12-18 01:22:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 260 states have (on average 1.2115384615384615) internal successors, (315), 263 states have internal predecessors, (315), 110 states have call successors, (110), 26 states have call predecessors, (110), 30 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2021-12-18 01:22:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 557 transitions. [2021-12-18 01:22:59,246 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 557 transitions. Word has length 235 [2021-12-18 01:22:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:59,247 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 557 transitions. [2021-12-18 01:22:59,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 01:22:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 557 transitions. [2021-12-18 01:22:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-18 01:22:59,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:59,249 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:59,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:59,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:22:59,463 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -192715456, now seen corresponding path program 1 times [2021-12-18 01:22:59,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:22:59,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718048584] [2021-12-18 01:22:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:59,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:22:59,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:22:59,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:22:59,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-18 01:23:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:00,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 01:23:00,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-18 01:23:01,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:01,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:01,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718048584] [2021-12-18 01:23:01,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718048584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:01,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:01,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:23:01,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895401161] [2021-12-18 01:23:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:01,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:23:01,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:23:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:01,410 INFO L87 Difference]: Start difference. First operand 401 states and 557 transitions. Second operand has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-18 01:23:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:02,771 INFO L93 Difference]: Finished difference Result 708 states and 993 transitions. [2021-12-18 01:23:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:23:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 251 [2021-12-18 01:23:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:02,775 INFO L225 Difference]: With dead ends: 708 [2021-12-18 01:23:02,775 INFO L226 Difference]: Without dead ends: 403 [2021-12-18 01:23:02,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:23:02,777 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 177 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:02,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 3370 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 01:23:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-18 01:23:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 398. [2021-12-18 01:23:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 260 states have internal predecessors, (313), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (128), 111 states have call predecessors, (128), 109 states have call successors, (128) [2021-12-18 01:23:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 551 transitions. [2021-12-18 01:23:02,792 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 551 transitions. Word has length 251 [2021-12-18 01:23:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:02,792 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 551 transitions. [2021-12-18 01:23:02,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-18 01:23:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 551 transitions. [2021-12-18 01:23:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:23:02,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:02,795 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:02,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-18 01:23:03,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:03,015 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -556391816, now seen corresponding path program 2 times [2021-12-18 01:23:03,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:03,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917533896] [2021-12-18 01:23:03,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:23:03,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:03,019 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:03,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-18 01:23:06,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:23:06,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:23:06,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:23:06,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-18 01:23:07,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:07,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917533896] [2021-12-18 01:23:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917533896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:07,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:07,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:23:07,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591382912] [2021-12-18 01:23:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:23:07,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:23:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:23:07,219 INFO L87 Difference]: Start difference. First operand 398 states and 551 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:23:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:07,888 INFO L93 Difference]: Finished difference Result 707 states and 991 transitions. [2021-12-18 01:23:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:23:07,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 266 [2021-12-18 01:23:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:07,891 INFO L225 Difference]: With dead ends: 707 [2021-12-18 01:23:07,891 INFO L226 Difference]: Without dead ends: 410 [2021-12-18 01:23:07,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:23:07,894 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 79 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:07,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 3081 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:23:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-18 01:23:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-12-18 01:23:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 264 states have (on average 1.2121212121212122) internal successors, (320), 266 states have internal predecessors, (320), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2021-12-18 01:23:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 568 transitions. [2021-12-18 01:23:07,909 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 568 transitions. Word has length 266 [2021-12-18 01:23:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:07,909 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 568 transitions. [2021-12-18 01:23:07,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 01:23:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 568 transitions. [2021-12-18 01:23:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-12-18 01:23:07,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:07,912 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:07,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-18 01:23:08,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:08,125 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 414007608, now seen corresponding path program 1 times [2021-12-18 01:23:08,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560363272] [2021-12-18 01:23:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:08,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:08,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:08,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:08,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-18 01:23:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:14,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:23:14,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:15,075 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-18 01:23:15,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 36 [2021-12-18 01:23:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-18 01:23:16,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:16,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560363272] [2021-12-18 01:23:16,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560363272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:16,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:23:16,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103436190] [2021-12-18 01:23:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:16,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:23:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:23:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:16,097 INFO L87 Difference]: Start difference. First operand 410 states and 568 transitions. Second operand has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 01:23:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:19,409 INFO L93 Difference]: Finished difference Result 730 states and 1023 transitions. [2021-12-18 01:23:19,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:23:19,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 296 [2021-12-18 01:23:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:19,415 INFO L225 Difference]: With dead ends: 730 [2021-12-18 01:23:19,415 INFO L226 Difference]: Without dead ends: 413 [2021-12-18 01:23:19,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:23:19,417 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 5 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:19,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2653 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 0 Unknown, 34 Unchecked, 2.7s Time] [2021-12-18 01:23:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-18 01:23:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2021-12-18 01:23:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 268 states have internal predecessors, (322), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2021-12-18 01:23:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 570 transitions. [2021-12-18 01:23:19,432 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 570 transitions. Word has length 296 [2021-12-18 01:23:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:19,433 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 570 transitions. [2021-12-18 01:23:19,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 01:23:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 570 transitions. [2021-12-18 01:23:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-12-18 01:23:19,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:19,435 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:19,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:19,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:19,664 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash -643816991, now seen corresponding path program 1 times [2021-12-18 01:23:19,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:19,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840352022] [2021-12-18 01:23:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:19,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:19,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:19,667 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:19,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-18 01:23:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:23:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-18 01:23:21,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:21,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:21,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840352022] [2021-12-18 01:23:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840352022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:21,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:21,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:23:21,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066885332] [2021-12-18 01:23:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:23:21,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:23:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:21,693 INFO L87 Difference]: Start difference. First operand 412 states and 570 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:23:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:21,775 INFO L93 Difference]: Finished difference Result 770 states and 1090 transitions. [2021-12-18 01:23:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:23:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 301 [2021-12-18 01:23:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:21,778 INFO L225 Difference]: With dead ends: 770 [2021-12-18 01:23:21,778 INFO L226 Difference]: Without dead ends: 417 [2021-12-18 01:23:21,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:23:21,780 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 7 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:21,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:23:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-18 01:23:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2021-12-18 01:23:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 267 states have (on average 1.2097378277153559) internal successors, (323), 269 states have internal predecessors, (323), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2021-12-18 01:23:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 571 transitions. [2021-12-18 01:23:21,796 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 571 transitions. Word has length 301 [2021-12-18 01:23:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:21,796 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 571 transitions. [2021-12-18 01:23:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-18 01:23:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 571 transitions. [2021-12-18 01:23:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-12-18 01:23:21,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:21,798 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:21,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:22,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:22,020 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1264414986, now seen corresponding path program 1 times [2021-12-18 01:23:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750623826] [2021-12-18 01:23:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:22,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:22,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:22,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-18 01:23:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:23,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 01:23:23,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-18 01:23:24,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:24,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750623826] [2021-12-18 01:23:24,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750623826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:24,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:24,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:23:24,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885095591] [2021-12-18 01:23:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:24,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:23:24,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:23:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:24,040 INFO L87 Difference]: Start difference. First operand 413 states and 571 transitions. Second operand has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 01:23:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:24,501 INFO L93 Difference]: Finished difference Result 778 states and 1085 transitions. [2021-12-18 01:23:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 01:23:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 301 [2021-12-18 01:23:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:24,521 INFO L225 Difference]: With dead ends: 778 [2021-12-18 01:23:24,521 INFO L226 Difference]: Without dead ends: 427 [2021-12-18 01:23:24,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-18 01:23:24,523 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 4 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:24,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3678 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:23:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-18 01:23:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2021-12-18 01:23:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 272 states have (on average 1.2058823529411764) internal successors, (328), 275 states have internal predecessors, (328), 115 states have call successors, (115), 27 states have call predecessors, (115), 32 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2021-12-18 01:23:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 585 transitions. [2021-12-18 01:23:24,543 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 585 transitions. Word has length 301 [2021-12-18 01:23:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:24,544 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 585 transitions. [2021-12-18 01:23:24,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 01:23:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 585 transitions. [2021-12-18 01:23:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-18 01:23:24,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:24,547 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:24,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-18 01:23:24,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:24,747 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2070873983, now seen corresponding path program 1 times [2021-12-18 01:23:24,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:24,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683925906] [2021-12-18 01:23:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:24,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:24,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:24,751 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:24,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-18 01:23:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:26,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 01:23:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-18 01:23:26,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:23:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2021-12-18 01:23:27,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:27,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683925906] [2021-12-18 01:23:27,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683925906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:23:27,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:23:27,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 01:23:27,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365042222] [2021-12-18 01:23:27,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:23:27,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:23:27,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:23:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:27,507 INFO L87 Difference]: Start difference. First operand 420 states and 585 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-12-18 01:23:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:27,768 INFO L93 Difference]: Finished difference Result 799 states and 1146 transitions. [2021-12-18 01:23:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:23:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 304 [2021-12-18 01:23:27,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:27,772 INFO L225 Difference]: With dead ends: 799 [2021-12-18 01:23:27,772 INFO L226 Difference]: Without dead ends: 435 [2021-12-18 01:23:27,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:27,774 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 30 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:27,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1732 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:23:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-18 01:23:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2021-12-18 01:23:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 281 states have (on average 1.209964412811388) internal successors, (340), 284 states have internal predecessors, (340), 115 states have call successors, (115), 27 states have call predecessors, (115), 32 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2021-12-18 01:23:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 597 transitions. [2021-12-18 01:23:27,791 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 597 transitions. Word has length 304 [2021-12-18 01:23:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:27,792 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 597 transitions. [2021-12-18 01:23:27,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-12-18 01:23:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 597 transitions. [2021-12-18 01:23:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 01:23:27,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:27,794 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:27,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-18 01:23:28,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:28,008 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2014722693, now seen corresponding path program 1 times [2021-12-18 01:23:28,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226122545] [2021-12-18 01:23:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:28,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:28,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:28,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-18 01:23:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:32,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 2301 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 01:23:32,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:32,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-18 01:23:32,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-18 01:23:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-12-18 01:23:33,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:33,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:33,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226122545] [2021-12-18 01:23:33,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226122545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:33,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:33,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 01:23:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974935618] [2021-12-18 01:23:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:33,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 01:23:33,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 01:23:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-18 01:23:33,236 INFO L87 Difference]: Start difference. First operand 429 states and 597 transitions. Second operand has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2021-12-18 01:23:44,046 WARN L227 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 31 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 01:23:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:46,429 INFO L93 Difference]: Finished difference Result 900 states and 1285 transitions. [2021-12-18 01:23:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 01:23:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 310 [2021-12-18 01:23:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:46,434 INFO L225 Difference]: With dead ends: 900 [2021-12-18 01:23:46,434 INFO L226 Difference]: Without dead ends: 529 [2021-12-18 01:23:46,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2021-12-18 01:23:46,437 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 121 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:46,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 4653 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-18 01:23:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-18 01:23:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 455. [2021-12-18 01:23:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 305 states have (on average 1.219672131147541) internal successors, (372), 308 states have internal predecessors, (372), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2021-12-18 01:23:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 642 transitions. [2021-12-18 01:23:46,458 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 642 transitions. Word has length 310 [2021-12-18 01:23:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:46,458 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 642 transitions. [2021-12-18 01:23:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.692307692307692) internal successors, (126), 14 states have internal predecessors, (126), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2021-12-18 01:23:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 642 transitions. [2021-12-18 01:23:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 01:23:46,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:46,461 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:46,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:46,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:46,683 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 91694395, now seen corresponding path program 1 times [2021-12-18 01:23:46,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752643210] [2021-12-18 01:23:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:46,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:46,687 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:46,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-18 01:23:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:23:48,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-18 01:23:48,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:48,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752643210] [2021-12-18 01:23:48,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752643210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:48,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:48,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:23:48,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420121406] [2021-12-18 01:23:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:48,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:23:48,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:23:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:48,692 INFO L87 Difference]: Start difference. First operand 455 states and 642 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:23:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:48,760 INFO L93 Difference]: Finished difference Result 868 states and 1267 transitions. [2021-12-18 01:23:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:23:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 310 [2021-12-18 01:23:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:48,766 INFO L225 Difference]: With dead ends: 868 [2021-12-18 01:23:48,766 INFO L226 Difference]: Without dead ends: 461 [2021-12-18 01:23:48,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:23:48,768 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 7 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:48,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:23:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-18 01:23:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 455. [2021-12-18 01:23:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 305 states have (on average 1.2131147540983607) internal successors, (370), 308 states have internal predecessors, (370), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2021-12-18 01:23:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 640 transitions. [2021-12-18 01:23:48,786 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 640 transitions. Word has length 310 [2021-12-18 01:23:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:48,787 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 640 transitions. [2021-12-18 01:23:48,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:23:48,787 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 640 transitions. [2021-12-18 01:23:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-18 01:23:48,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:48,789 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:48,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:48,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:48,995 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash -52076165, now seen corresponding path program 1 times [2021-12-18 01:23:48,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212117591] [2021-12-18 01:23:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:48,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:48,998 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:48,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-18 01:23:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 2315 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:23:50,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-18 01:23:51,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:51,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212117591] [2021-12-18 01:23:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212117591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:23:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254903772] [2021-12-18 01:23:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:23:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:23:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:23:51,288 INFO L87 Difference]: Start difference. First operand 455 states and 640 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:23:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:53,420 INFO L93 Difference]: Finished difference Result 876 states and 1282 transitions. [2021-12-18 01:23:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:23:53,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 314 [2021-12-18 01:23:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:53,428 INFO L225 Difference]: With dead ends: 876 [2021-12-18 01:23:53,428 INFO L226 Difference]: Without dead ends: 469 [2021-12-18 01:23:53,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:23:53,431 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 15 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:53,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1644 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 01:23:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-18 01:23:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2021-12-18 01:23:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 307 states have (on average 1.211726384364821) internal successors, (372), 310 states have internal predecessors, (372), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2021-12-18 01:23:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 642 transitions. [2021-12-18 01:23:53,451 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 642 transitions. Word has length 314 [2021-12-18 01:23:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:53,452 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 642 transitions. [2021-12-18 01:23:53,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 01:23:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 642 transitions. [2021-12-18 01:23:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-18 01:23:53,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:53,456 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:53,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:53,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:23:53,680 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1462907323, now seen corresponding path program 1 times [2021-12-18 01:23:53,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:23:53,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321714370] [2021-12-18 01:23:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:53,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:23:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:23:53,683 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:23:53,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-18 01:23:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 01:23:58,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:59,517 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-18 01:23:59,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2021-12-18 01:23:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-18 01:23:59,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:59,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:23:59,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321714370] [2021-12-18 01:23:59,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321714370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:59,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:59,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 01:23:59,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797267077] [2021-12-18 01:23:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:59,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 01:23:59,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:23:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 01:23:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:23:59,878 INFO L87 Difference]: Start difference. First operand 457 states and 642 transitions. Second operand has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2021-12-18 01:24:04,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:24:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:06,632 INFO L93 Difference]: Finished difference Result 880 states and 1267 transitions. [2021-12-18 01:24:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:24:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 314 [2021-12-18 01:24:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:06,639 INFO L225 Difference]: With dead ends: 880 [2021-12-18 01:24:06,639 INFO L226 Difference]: Without dead ends: 471 [2021-12-18 01:24:06,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:24:06,641 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 118 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:06,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 3373 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 671 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-12-18 01:24:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-18 01:24:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 439. [2021-12-18 01:24:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 289 states have (on average 1.1903114186851211) internal successors, (344), 292 states have internal predecessors, (344), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2021-12-18 01:24:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 614 transitions. [2021-12-18 01:24:06,661 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 614 transitions. Word has length 314 [2021-12-18 01:24:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:06,662 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 614 transitions. [2021-12-18 01:24:06,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2021-12-18 01:24:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 614 transitions. [2021-12-18 01:24:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-18 01:24:06,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:06,664 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:06,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-18 01:24:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:24:06,883 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1408820805, now seen corresponding path program 1 times [2021-12-18 01:24:06,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:24:06,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250081309] [2021-12-18 01:24:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:06,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:24:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:24:06,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:24:06,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-18 01:24:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:11,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 01:24:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-12-18 01:24:12,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:24:12,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:24:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250081309] [2021-12-18 01:24:12,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250081309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:12,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:12,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 01:24:12,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806549974] [2021-12-18 01:24:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:12,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 01:24:12,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:24:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 01:24:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 01:24:12,711 INFO L87 Difference]: Start difference. First operand 439 states and 614 transitions. Second operand has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:24:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:15,463 INFO L93 Difference]: Finished difference Result 773 states and 1092 transitions. [2021-12-18 01:24:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:24:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 314 [2021-12-18 01:24:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:15,467 INFO L225 Difference]: With dead ends: 773 [2021-12-18 01:24:15,467 INFO L226 Difference]: Without dead ends: 439 [2021-12-18 01:24:15,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-12-18 01:24:15,469 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 110 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:15,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 3589 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-18 01:24:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-18 01:24:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-12-18 01:24:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 289 states have (on average 1.1868512110726643) internal successors, (343), 292 states have internal predecessors, (343), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2021-12-18 01:24:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 613 transitions. [2021-12-18 01:24:15,487 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 613 transitions. Word has length 314 [2021-12-18 01:24:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:15,487 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 613 transitions. [2021-12-18 01:24:15,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2021-12-18 01:24:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 613 transitions. [2021-12-18 01:24:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-18 01:24:15,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:15,490 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:15,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-18 01:24:15,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 01:24:15,704 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash -147903555, now seen corresponding path program 1 times [2021-12-18 01:24:15,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:24:15,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042360151] [2021-12-18 01:24:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:15,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:24:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:24:15,707 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 01:24:15,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process Killed by 15