./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_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_up_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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:14:12,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:14:12,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:14:12,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:14:12,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:14:12,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:14:12,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:14:12,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:14:12,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:14:12,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:14:12,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:14:12,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:14:12,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:14:12,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:14:12,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:14:12,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:14:12,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:14:12,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:14:12,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:14:13,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:14:13,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:14:13,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:14:13,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:14:13,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:14:13,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:14:13,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:14:13,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:14:13,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:14:13,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:14:13,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:14:13,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:14:13,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:14:13,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:14:13,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:14:13,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:14:13,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:14:13,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:14:13,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:14:13,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:14:13,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:14:13,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:14:13,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:14:13,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:14:13,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:14:13,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:14:13,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:14:13,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:14:13,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:14:13,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:14:13,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:14:13,056 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:14:13,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:14:13,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:14:13,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:14:13,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:14:13,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:14:13,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:14:13,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:14:13,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:14:13,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:14:13,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:14:13,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:14:13,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:14:13,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:14:13,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:14:13,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:14:13,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:14:13,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:14:13,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:14:13,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:14:13,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:14:13,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:14:13,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:14:13,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-12-18 01:14:13,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:14:13,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:14:13,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:14:13,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:14:13,266 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:14:13,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:14:13,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06aef39a/100c32c057f840d5a6c7269df23e0a4e/FLAG8278b1ee0 [2021-12-18 01:14:13,930 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:14:13,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:14:13,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06aef39a/100c32c057f840d5a6c7269df23e0a4e/FLAG8278b1ee0 [2021-12-18 01:14:14,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06aef39a/100c32c057f840d5a6c7269df23e0a4e [2021-12-18 01:14:14,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:14:14,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:14:14,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:14:14,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:14:14,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:14:14,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:14:14" (1/1) ... [2021-12-18 01:14:14,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4944e54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:14, skipping insertion in model container [2021-12-18 01:14:14,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:14:14" (1/1) ... [2021-12-18 01:14:14,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:14:14,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:14:14,602 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_up_harness.i[4502,4515] [2021-12-18 01:14:14,609 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_up_harness.i[4562,4575] [2021-12-18 01:14:15,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:14:15,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:14:15,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:14:15,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:14:15,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:14:15,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:14:15,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:14:15,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:14:15,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:14:15,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:14:15,427 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:14:15,445 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,446 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,448 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,530 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:14:15,594 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:14:15,631 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_up_harness.i[4502,4515] [2021-12-18 01:14:15,632 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_up_harness.i[4562,4575] [2021-12-18 01:14:15,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:14:15,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:14:15,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:14:15,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:14:15,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:14:15,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:14:15,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:14:15,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:14:15,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:14:15,688 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:14:15,715 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:14:15,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,731 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:14:15,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:14:15,950 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:14:15,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15 WrapperNode [2021-12-18 01:14:15,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:14:15,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:14:15,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:14:15,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:14:15,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,118 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 815 [2021-12-18 01:14:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:14:16,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:14:16,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:14:16,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:14:16,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:14:16,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:14:16,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:14:16,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:14:16,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (1/1) ... [2021-12-18 01:14:16,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:14:16,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:16,262 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 01:14:16,285 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 01:14:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-18 01:14:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-18 01:14:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-18 01:14:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-18 01:14:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:14:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-18 01:14:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-18 01:14:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-18 01:14:16,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-18 01:14:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:14:16,308 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:14:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-18 01:14:16,309 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-18 01:14:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:14:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:14:16,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:14:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:14:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:14:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:14:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:14:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:14:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-18 01:14:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-18 01:14:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-18 01:14:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-18 01:14:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:14:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:14:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:14:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:14:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-18 01:14:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-18 01:14:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:14:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:14:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-18 01:14:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-18 01:14:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-18 01:14:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-18 01:14:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:14:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-18 01:14:16,321 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-18 01:14:16,321 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-18 01:14:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:14:16,321 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:14:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-18 01:14:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-18 01:14:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:14:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:14:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:14:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:14:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:14:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:14:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:14:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:14:16,585 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:14:16,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:14:17,190 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:14:17,196 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:14:17,196 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 01:14:17,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:14:17 BoogieIcfgContainer [2021-12-18 01:14:17,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:14:17,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:14:17,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:14:17,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:14:17,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:14:14" (1/3) ... [2021-12-18 01:14:17,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32449ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:14:17, skipping insertion in model container [2021-12-18 01:14:17,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:14:15" (2/3) ... [2021-12-18 01:14:17,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32449ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:14:17, skipping insertion in model container [2021-12-18 01:14:17,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:14:17" (3/3) ... [2021-12-18 01:14:17,204 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:14:17,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:14:17,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 01:14:17,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:14:17,254 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 01:14:17,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 01:14:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-18 01:14:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 01:14:17,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:17,276 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:17,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash -30055658, now seen corresponding path program 1 times [2021-12-18 01:14:17,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:17,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991862808] [2021-12-18 01:14:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:17,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:14:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:14:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:14:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:14:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 01:14:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:14:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 01:14:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 01:14:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 01:14:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 01:14:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 01:14:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:14:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 01:14:17,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:17,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991862808] [2021-12-18 01:14:17,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991862808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:17,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:17,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:17,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879001429] [2021-12-18 01:14:17,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:17,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:17,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:17,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:17,963 INFO L87 Difference]: Start difference. First operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 01:14:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:18,774 INFO L93 Difference]: Finished difference Result 711 states and 1124 transitions. [2021-12-18 01:14:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:14:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2021-12-18 01:14:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:18,802 INFO L225 Difference]: With dead ends: 711 [2021-12-18 01:14:18,803 INFO L226 Difference]: Without dead ends: 402 [2021-12-18 01:14:18,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 01:14:18,819 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 237 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:18,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 510 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:14:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-18 01:14:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2021-12-18 01:14:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 191 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-18 01:14:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 419 transitions. [2021-12-18 01:14:18,869 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 419 transitions. Word has length 104 [2021-12-18 01:14:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:18,870 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 419 transitions. [2021-12-18 01:14:18,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 01:14:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 419 transitions. [2021-12-18 01:14:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 01:14:18,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:18,873 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:18,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:14:18,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -380024514, now seen corresponding path program 1 times [2021-12-18 01:14:18,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:18,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941027284] [2021-12-18 01:14:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:18,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:14:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:14:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:14:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:14:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 01:14:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:14:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 01:14:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 01:14:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 01:14:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 01:14:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 01:14:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:14:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-18 01:14:19,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941027284] [2021-12-18 01:14:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941027284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:14:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947110740] [2021-12-18 01:14:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:19,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:19,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:19,243 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 01:14:19,244 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 01:14:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:19,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 01:14:19,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:14:19,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:19,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947110740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:19,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:14:19,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-18 01:14:19,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353265879] [2021-12-18 01:14:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:19,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:14:19,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:14:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:14:19,803 INFO L87 Difference]: Start difference. First operand 308 states and 419 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 01:14:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:19,943 INFO L93 Difference]: Finished difference Result 582 states and 798 transitions. [2021-12-18 01:14:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:19,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2021-12-18 01:14:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:19,947 INFO L225 Difference]: With dead ends: 582 [2021-12-18 01:14:19,948 INFO L226 Difference]: Without dead ends: 310 [2021-12-18 01:14:19,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 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 01:14:19,950 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 442 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:19,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1476 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:14:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-18 01:14:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-12-18 01:14:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 190 states have (on average 1.2210526315789474) internal successors, (232), 193 states have internal predecessors, (232), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-12-18 01:14:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 424 transitions. [2021-12-18 01:14:19,993 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 424 transitions. Word has length 104 [2021-12-18 01:14:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:19,993 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 424 transitions. [2021-12-18 01:14:19,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 01:14:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 424 transitions. [2021-12-18 01:14:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-18 01:14:19,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:19,995 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:14:20,017 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 01:14:20,208 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 01:14:20,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1602100200, now seen corresponding path program 1 times [2021-12-18 01:14:20,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:20,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179455128] [2021-12-18 01:14:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:20,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:14:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:14:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:14:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:14:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 01:14:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:14:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:14:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:14:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:14:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 01:14:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:14:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 01:14:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 01:14:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 01:14:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 01:14:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-18 01:14:20,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:20,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179455128] [2021-12-18 01:14:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179455128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:14:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273135430] [2021-12-18 01:14:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:20,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:20,553 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 01:14:20,583 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 01:14:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:20,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:14:20,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:14:21,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:21,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273135430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:21,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:14:21,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-18 01:14:21,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944202946] [2021-12-18 01:14:21,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:21,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:14:21,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:21,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:14:21,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:14:21,233 INFO L87 Difference]: Start difference. First operand 310 states and 424 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 01:14:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:21,464 INFO L93 Difference]: Finished difference Result 605 states and 845 transitions. [2021-12-18 01:14:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:21,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2021-12-18 01:14:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:21,467 INFO L225 Difference]: With dead ends: 605 [2021-12-18 01:14:21,467 INFO L226 Difference]: Without dead ends: 331 [2021-12-18 01:14:21,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:14:21,468 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 474 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:21,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 2194 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-18 01:14:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2021-12-18 01:14:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-18 01:14:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-18 01:14:21,499 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 112 [2021-12-18 01:14:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:21,499 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-18 01:14:21,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 01:14:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-18 01:14:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 01:14:21,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:21,501 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:21,537 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 01:14:21,701 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 01:14:21,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1616611866, now seen corresponding path program 1 times [2021-12-18 01:14:21,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:21,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4499696] [2021-12-18 01:14:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:21,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:21,782 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86455433] [2021-12-18 01:14:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:21,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:21,783 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 01:14:21,800 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 01:14:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:22,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:14:22,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:14:22,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:22,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4499696] [2021-12-18 01:14:22,359 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86455433] [2021-12-18 01:14:22,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86455433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:22,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:22,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:14:22,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265548462] [2021-12-18 01:14:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:22,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:14:22,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:14:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:14:22,360 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 01:14:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:22,514 INFO L93 Difference]: Finished difference Result 630 states and 894 transitions. [2021-12-18 01:14:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:22,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2021-12-18 01:14:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:22,516 INFO L225 Difference]: With dead ends: 630 [2021-12-18 01:14:22,516 INFO L226 Difference]: Without dead ends: 337 [2021-12-18 01:14:22,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:14:22,518 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 466 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:22,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1813 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:14:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-18 01:14:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 329. [2021-12-18 01:14:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-18 01:14:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-18 01:14:22,540 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 127 [2021-12-18 01:14:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:22,541 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-18 01:14:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 01:14:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-18 01:14:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-18 01:14:22,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:22,542 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-12-18 01:14:22,564 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 01:14:22,764 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 01:14:22,765 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1521582877, now seen corresponding path program 1 times [2021-12-18 01:14:22,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:22,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125843857] [2021-12-18 01:14:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:22,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:22,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106913055] [2021-12-18 01:14:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:22,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:22,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:22,805 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 01:14:22,842 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 01:14:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:23,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:23,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-18 01:14:23,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:23,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:23,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125843857] [2021-12-18 01:14:23,473 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:23,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106913055] [2021-12-18 01:14:23,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106913055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:23,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:23,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:14:23,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530522647] [2021-12-18 01:14:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:23,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:14:23,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:14:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:14:23,475 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:14:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:23,801 INFO L93 Difference]: Finished difference Result 640 states and 907 transitions. [2021-12-18 01:14:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:23,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2021-12-18 01:14:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:23,804 INFO L225 Difference]: With dead ends: 640 [2021-12-18 01:14:23,804 INFO L226 Difference]: Without dead ends: 347 [2021-12-18 01:14:23,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 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 01:14:23,806 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 537 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:23,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2434 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-18 01:14:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-18 01:14:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-18 01:14:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-18 01:14:23,819 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 143 [2021-12-18 01:14:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:23,819 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-18 01:14:23,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:14:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-18 01:14:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:14:23,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:23,821 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:23,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 01:14:24,031 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 01:14:24,032 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1907107023, now seen corresponding path program 1 times [2021-12-18 01:14:24,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:24,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900306583] [2021-12-18 01:14:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:24,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:24,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:24,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262894747] [2021-12-18 01:14:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:24,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:24,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:24,132 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 01:14:24,167 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 01:14:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:24,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:14:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-18 01:14:24,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:24,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900306583] [2021-12-18 01:14:24,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262894747] [2021-12-18 01:14:24,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262894747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:24,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:24,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:14:24,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464005413] [2021-12-18 01:14:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:24,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:14:24,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:24,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:14:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:14:24,809 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-18 01:14:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:25,010 INFO L93 Difference]: Finished difference Result 595 states and 843 transitions. [2021-12-18 01:14:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:25,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2021-12-18 01:14:25,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:25,013 INFO L225 Difference]: With dead ends: 595 [2021-12-18 01:14:25,013 INFO L226 Difference]: Without dead ends: 331 [2021-12-18 01:14:25,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 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 01:14:25,015 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 487 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:25,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2129 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:14:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-18 01:14:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-18 01:14:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 211 states have internal predecessors, (255), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2021-12-18 01:14:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 464 transitions. [2021-12-18 01:14:25,028 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 464 transitions. Word has length 158 [2021-12-18 01:14:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:25,028 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 464 transitions. [2021-12-18 01:14:25,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-18 01:14:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 464 transitions. [2021-12-18 01:14:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 01:14:25,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:25,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 01:14:25,053 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 01:14:25,249 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 01:14:25,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:25,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2069947675, now seen corresponding path program 1 times [2021-12-18 01:14:25,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:25,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097383637] [2021-12-18 01:14:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:25,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:25,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:25,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615211079] [2021-12-18 01:14:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:25,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:25,292 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 01:14:25,307 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 01:14:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:25,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-18 01:14:26,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:26,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097383637] [2021-12-18 01:14:26,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615211079] [2021-12-18 01:14:26,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615211079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:26,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:26,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:14:26,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965746823] [2021-12-18 01:14:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:26,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:14:26,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:14:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:14:26,017 INFO L87 Difference]: Start difference. First operand 331 states and 464 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-18 01:14:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:26,399 INFO L93 Difference]: Finished difference Result 613 states and 869 transitions. [2021-12-18 01:14:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 174 [2021-12-18 01:14:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:26,402 INFO L225 Difference]: With dead ends: 613 [2021-12-18 01:14:26,402 INFO L226 Difference]: Without dead ends: 347 [2021-12-18 01:14:26,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 169 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 01:14:26,404 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 549 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:26,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 2733 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:14:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-18 01:14:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-12-18 01:14:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-18 01:14:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-18 01:14:26,417 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 174 [2021-12-18 01:14:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:26,417 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-18 01:14:26,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-18 01:14:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-18 01:14:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-18 01:14:26,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:26,420 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:26,443 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 01:14:26,627 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 01:14:26,628 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -586575313, now seen corresponding path program 1 times [2021-12-18 01:14:26,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063216691] [2021-12-18 01:14:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:26,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:26,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:26,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293453758] [2021-12-18 01:14:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:26,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:26,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:26,705 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 01:14:26,707 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 01:14:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:27,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:27,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-18 01:14:27,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:27,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063216691] [2021-12-18 01:14:27,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293453758] [2021-12-18 01:14:27,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293453758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:27,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:27,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:14:27,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801257280] [2021-12-18 01:14:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:27,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:14:27,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:14:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:14:27,448 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 01:14:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:27,717 INFO L93 Difference]: Finished difference Result 633 states and 897 transitions. [2021-12-18 01:14:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:14:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 204 [2021-12-18 01:14:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:27,721 INFO L225 Difference]: With dead ends: 633 [2021-12-18 01:14:27,721 INFO L226 Difference]: Without dead ends: 353 [2021-12-18 01:14:27,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 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 01:14:27,723 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 511 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:27,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 2444 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-18 01:14:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2021-12-18 01:14:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-18 01:14:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-18 01:14:27,735 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 204 [2021-12-18 01:14:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:27,735 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-18 01:14:27,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 01:14:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-18 01:14:27,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-18 01:14:27,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:27,738 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 01:14:27,778 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 01:14:27,951 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 01:14:27,951 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:27,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1182025265, now seen corresponding path program 1 times [2021-12-18 01:14:27,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:27,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486412086] [2021-12-18 01:14:27,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:27,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:28,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311590006] [2021-12-18 01:14:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:28,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:28,009 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 01:14:28,011 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 01:14:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:28,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 01:14:28,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 01:14:28,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:28,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:28,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486412086] [2021-12-18 01:14:28,874 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:28,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311590006] [2021-12-18 01:14:28,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311590006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:28,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:28,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:14:28,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546930457] [2021-12-18 01:14:28,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:28,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:14:28,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:28,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:14:28,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:14:28,878 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-18 01:14:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:29,323 INFO L93 Difference]: Finished difference Result 627 states and 887 transitions. [2021-12-18 01:14:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:14:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 236 [2021-12-18 01:14:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:29,326 INFO L225 Difference]: With dead ends: 627 [2021-12-18 01:14:29,326 INFO L226 Difference]: Without dead ends: 347 [2021-12-18 01:14:29,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 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 01:14:29,328 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 582 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:29,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 3015 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:14:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-18 01:14:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-18 01:14:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-18 01:14:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2021-12-18 01:14:29,338 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 236 [2021-12-18 01:14:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:29,338 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2021-12-18 01:14:29,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-18 01:14:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2021-12-18 01:14:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:14:29,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:29,340 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:29,361 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 01:14:29,555 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 01:14:29,555 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1259871209, now seen corresponding path program 1 times [2021-12-18 01:14:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:29,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763858285] [2021-12-18 01:14:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:29,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:29,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127686152] [2021-12-18 01:14:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:29,628 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 01:14:29,629 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 01:14:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:30,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:14:30,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-18 01:14:30,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:30,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:30,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763858285] [2021-12-18 01:14:30,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:30,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127686152] [2021-12-18 01:14:30,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127686152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:30,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:30,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:14:30,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748497278] [2021-12-18 01:14:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:30,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:14:30,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:14:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:14:30,578 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:30,861 INFO L93 Difference]: Finished difference Result 658 states and 935 transitions. [2021-12-18 01:14:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:14:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-18 01:14:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:30,864 INFO L225 Difference]: With dead ends: 658 [2021-12-18 01:14:30,864 INFO L226 Difference]: Without dead ends: 365 [2021-12-18 01:14:30,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 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 01:14:30,866 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 21 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:30,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1940 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:14:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-18 01:14:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2021-12-18 01:14:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 214 states have (on average 1.233644859813084) internal successors, (264), 217 states have internal predecessors, (264), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-18 01:14:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 469 transitions. [2021-12-18 01:14:30,883 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 469 transitions. Word has length 266 [2021-12-18 01:14:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:30,883 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 469 transitions. [2021-12-18 01:14:30,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 469 transitions. [2021-12-18 01:14:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:14:30,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:30,886 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:30,935 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 01:14:31,099 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 01:14:31,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1029084259, now seen corresponding path program 1 times [2021-12-18 01:14:31,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163487798] [2021-12-18 01:14:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:31,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:31,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:31,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692604085] [2021-12-18 01:14:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:31,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:31,180 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 01:14:31,181 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 01:14:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:31,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:14:31,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-18 01:14:32,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:32,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:32,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163487798] [2021-12-18 01:14:32,066 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:32,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692604085] [2021-12-18 01:14:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692604085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:32,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:32,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:32,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952914913] [2021-12-18 01:14:32,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:32,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:32,068 INFO L87 Difference]: Start difference. First operand 337 states and 469 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:32,092 INFO L93 Difference]: Finished difference Result 646 states and 911 transitions. [2021-12-18 01:14:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:14:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-18 01:14:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:32,096 INFO L225 Difference]: With dead ends: 646 [2021-12-18 01:14:32,096 INFO L226 Difference]: Without dead ends: 345 [2021-12-18 01:14:32,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 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 01:14:32,098 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 3 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1243 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 01:14:32,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-18 01:14:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2021-12-18 01:14:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 221 states have internal predecessors, (268), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-18 01:14:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 473 transitions. [2021-12-18 01:14:32,110 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 473 transitions. Word has length 266 [2021-12-18 01:14:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:32,110 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 473 transitions. [2021-12-18 01:14:32,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 473 transitions. [2021-12-18 01:14:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:14:32,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:32,112 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:32,137 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 01:14:32,331 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 01:14:32,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2079122269, now seen corresponding path program 1 times [2021-12-18 01:14:32,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449512282] [2021-12-18 01:14:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:32,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:32,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:32,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967071700] [2021-12-18 01:14:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:32,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:32,404 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 01:14:32,405 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 01:14:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:33,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-18 01:14:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:33,306 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 01:14:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-18 01:14:33,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:33,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:33,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449512282] [2021-12-18 01:14:33,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:33,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967071700] [2021-12-18 01:14:33,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967071700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:33,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:33,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:14:33,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694168410] [2021-12-18 01:14:33,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:33,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:14:33,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:14:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:14:33,514 INFO L87 Difference]: Start difference. First operand 341 states and 473 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 6 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-18 01:14:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:34,205 INFO L93 Difference]: Finished difference Result 697 states and 993 transitions. [2021-12-18 01:14:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:14:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 6 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 266 [2021-12-18 01:14:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:34,208 INFO L225 Difference]: With dead ends: 697 [2021-12-18 01:14:34,208 INFO L226 Difference]: Without dead ends: 392 [2021-12-18 01:14:34,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-12-18 01:14:34,210 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 110 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:34,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 3702 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:14:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-18 01:14:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 352. [2021-12-18 01:14:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 228 states have (on average 1.2280701754385965) internal successors, (280), 230 states have internal predecessors, (280), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2021-12-18 01:14:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 496 transitions. [2021-12-18 01:14:34,226 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 496 transitions. Word has length 266 [2021-12-18 01:14:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:34,226 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 496 transitions. [2021-12-18 01:14:34,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 6 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-18 01:14:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 496 transitions. [2021-12-18 01:14:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:14:34,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:34,229 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:34,269 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 01:14:34,451 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 01:14:34,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1483055645, now seen corresponding path program 1 times [2021-12-18 01:14:34,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069068220] [2021-12-18 01:14:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:34,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:34,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:34,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820818950] [2021-12-18 01:14:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:34,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:34,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:34,501 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 01:14:34,541 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 01:14:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:35,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3385 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 01:14:35,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-18 01:14:35,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:35,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:35,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069068220] [2021-12-18 01:14:35,364 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820818950] [2021-12-18 01:14:35,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820818950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:35,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:35,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:14:35,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730708306] [2021-12-18 01:14:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:35,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:14:35,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:14:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:35,370 INFO L87 Difference]: Start difference. First operand 352 states and 496 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:35,400 INFO L93 Difference]: Finished difference Result 688 states and 985 transitions. [2021-12-18 01:14:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-18 01:14:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:35,402 INFO L225 Difference]: With dead ends: 688 [2021-12-18 01:14:35,402 INFO L226 Difference]: Without dead ends: 372 [2021-12-18 01:14:35,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 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 01:14:35,405 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:35,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1708 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-12-18 01:14:35,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 360. [2021-12-18 01:14:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 236 states have (on average 1.2203389830508475) internal successors, (288), 238 states have internal predecessors, (288), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2021-12-18 01:14:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 504 transitions. [2021-12-18 01:14:35,416 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 504 transitions. Word has length 266 [2021-12-18 01:14:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:35,417 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 504 transitions. [2021-12-18 01:14:35,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 504 transitions. [2021-12-18 01:14:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 01:14:35,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:35,419 INFO L514 BasicCegarLoop]: trace histogram [7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:35,457 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 01:14:35,655 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 01:14:35,656 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1193032355, now seen corresponding path program 1 times [2021-12-18 01:14:35,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:35,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971224315] [2021-12-18 01:14:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:35,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:35,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690966364] [2021-12-18 01:14:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:35,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:35,740 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 01:14:35,787 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 01:14:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:36,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:14:36,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-18 01:14:36,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:36,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971224315] [2021-12-18 01:14:36,664 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690966364] [2021-12-18 01:14:36,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690966364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:36,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:36,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:14:36,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764181573] [2021-12-18 01:14:36,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:36,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:14:36,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:14:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:14:36,666 INFO L87 Difference]: Start difference. First operand 360 states and 504 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:36,697 INFO L93 Difference]: Finished difference Result 684 states and 987 transitions. [2021-12-18 01:14:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:14:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-18 01:14:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:36,700 INFO L225 Difference]: With dead ends: 684 [2021-12-18 01:14:36,700 INFO L226 Difference]: Without dead ends: 360 [2021-12-18 01:14:36,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 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 01:14:36,702 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1249 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 01:14:36,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1249 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:14:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-18 01:14:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-12-18 01:14:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 236 states have (on average 1.2161016949152543) internal successors, (287), 238 states have internal predecessors, (287), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (119), 98 states have call predecessors, (119), 95 states have call successors, (119) [2021-12-18 01:14:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 503 transitions. [2021-12-18 01:14:36,713 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 503 transitions. Word has length 266 [2021-12-18 01:14:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:36,713 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 503 transitions. [2021-12-18 01:14:36,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 503 transitions. [2021-12-18 01:14:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-18 01:14:36,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:36,715 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:14:36,739 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 01:14:36,935 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 01:14:36,936 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1010286223, now seen corresponding path program 1 times [2021-12-18 01:14:36,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:36,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457548200] [2021-12-18 01:14:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:36,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:36,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:36,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017117585] [2021-12-18 01:14:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:36,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:36,987 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 01:14:36,988 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 01:14:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:37,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-18 01:14:37,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:38,301 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 01:14:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-18 01:14:38,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:38,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457548200] [2021-12-18 01:14:38,495 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017117585] [2021-12-18 01:14:38,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017117585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:38,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:38,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 01:14:38,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633273076] [2021-12-18 01:14:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:38,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 01:14:38,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 01:14:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:14:38,497 INFO L87 Difference]: Start difference. First operand 360 states and 503 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-18 01:14:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:39,333 INFO L93 Difference]: Finished difference Result 745 states and 1057 transitions. [2021-12-18 01:14:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 01:14:39,334 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 272 [2021-12-18 01:14:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:39,336 INFO L225 Difference]: With dead ends: 745 [2021-12-18 01:14:39,336 INFO L226 Difference]: Without dead ends: 447 [2021-12-18 01:14:39,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-12-18 01:14:39,341 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 135 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:39,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 4982 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 870 Invalid, 0 Unknown, 86 Unchecked, 0.6s Time] [2021-12-18 01:14:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-18 01:14:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 405. [2021-12-18 01:14:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 274 states have (on average 1.2080291970802919) internal successors, (331), 276 states have internal predecessors, (331), 100 states have call successors, (100), 24 states have call predecessors, (100), 29 states have return successors, (150), 104 states have call predecessors, (150), 98 states have call successors, (150) [2021-12-18 01:14:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2021-12-18 01:14:39,357 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 272 [2021-12-18 01:14:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:39,357 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2021-12-18 01:14:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-18 01:14:39,357 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2021-12-18 01:14:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-18 01:14:39,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:39,359 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:14:39,384 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 01:14:39,567 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 01:14:39,567 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash -255429909, now seen corresponding path program 1 times [2021-12-18 01:14:39,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:39,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012049382] [2021-12-18 01:14:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:39,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:39,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:39,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582006840] [2021-12-18 01:14:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:39,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:39,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:39,614 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 01:14:39,615 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 01:14:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:40,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:14:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-18 01:14:40,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:14:40,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012049382] [2021-12-18 01:14:40,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582006840] [2021-12-18 01:14:40,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582006840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:14:40,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:14:40,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:14:40,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776993956] [2021-12-18 01:14:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:14:40,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:14:40,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:14:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:14:40,524 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:14:40,707 INFO L93 Difference]: Finished difference Result 760 states and 1119 transitions. [2021-12-18 01:14:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:14:40,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 272 [2021-12-18 01:14:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:14:40,711 INFO L225 Difference]: With dead ends: 760 [2021-12-18 01:14:40,711 INFO L226 Difference]: Without dead ends: 391 [2021-12-18 01:14:40,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 269 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 01:14:40,713 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 7 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:14:40,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1604 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:14:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-18 01:14:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-12-18 01:14:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 263 states have internal predecessors, (314), 100 states have call successors, (100), 24 states have call predecessors, (100), 28 states have return successors, (139), 103 states have call predecessors, (139), 98 states have call successors, (139) [2021-12-18 01:14:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 553 transitions. [2021-12-18 01:14:40,725 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 553 transitions. Word has length 272 [2021-12-18 01:14:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:14:40,725 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 553 transitions. [2021-12-18 01:14:40,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:14:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 553 transitions. [2021-12-18 01:14:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-18 01:14:40,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:14:40,727 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:14:40,750 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 01:14:40,931 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 01:14:40,931 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:14:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:14:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 327777536, now seen corresponding path program 1 times [2021-12-18 01:14:40,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:14:40,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962679843] [2021-12-18 01:14:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:40,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:14:40,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:14:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491316304] [2021-12-18 01:14:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:14:40,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:14:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:14:40,978 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 01:14:40,979 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 01:14:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:14:41,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 121 conjunts are in the unsatisfiable core [2021-12-18 01:14:41,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:14:41,668 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 01:14:42,033 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:14:42,034 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 01:14:48,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:14:48,536 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 01:14:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:14:48,549 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 01:14:49,353 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2691 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2691))) is different from true [2021-12-18 01:14:51,504 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2693 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_2693)))) is different from true [2021-12-18 01:14:53,431 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2693 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|) 0 v_ArrVal_2693)))) is different from true [2021-12-18 01:14:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:14:53,731 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:14:53,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 86 [2021-12-18 01:14:53,742 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:14:53,742 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 01:14:53,758 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 01:14:53,782 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 01:14:53,909 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:14:53,910 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 23 treesize of output 25 [2021-12-18 01:14:53,999 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 18 treesize of output 14 [2021-12-18 01:14:54,061 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 39 treesize of output 33 [2021-12-18 01:14:54,064 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 01:14:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:14:54,104 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 18 treesize of output 22 [2021-12-18 01:14:54,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-18 01:14:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 44 refuted. 0 times theorem prover too weak. 148 trivial. 10 not checked. [2021-12-18 01:14:54,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:14:57,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:14:57,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962679843] [2021-12-18 01:14:57,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:14:57,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491316304] [2021-12-18 01:14:57,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491316304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:14:57,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:14:57,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-12-18 01:14:57,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378410230] [2021-12-18 01:14:57,432 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:14:57,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-18 01:14:57,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:14:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-18 01:14:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1266, Unknown=21, NotChecked=222, Total=1640 [2021-12-18 01:14:57,433 INFO L87 Difference]: Start difference. First operand 391 states and 553 transitions. Second operand has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2021-12-18 01:15:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:15:16,800 INFO L93 Difference]: Finished difference Result 1018 states and 1526 transitions. [2021-12-18 01:15:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 01:15:16,800 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) Word has length 274 [2021-12-18 01:15:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:15:16,805 INFO L225 Difference]: With dead ends: 1018 [2021-12-18 01:15:16,805 INFO L226 Difference]: Without dead ends: 668 [2021-12-18 01:15:16,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 384 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=278, Invalid=2970, Unknown=70, NotChecked=342, Total=3660 [2021-12-18 01:15:16,807 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 275 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 4645 SdHoareTripleChecker+Invalid, 8694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4709 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:15:16,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 4645 Invalid, 8694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3787 Invalid, 0 Unknown, 4709 Unchecked, 2.1s Time] [2021-12-18 01:15:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-18 01:15:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 461. [2021-12-18 01:15:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 313 states have (on average 1.2012779552715656) internal successors, (376), 320 states have internal predecessors, (376), 107 states have call successors, (107), 29 states have call predecessors, (107), 39 states have return successors, (186), 111 states have call predecessors, (186), 105 states have call successors, (186) [2021-12-18 01:15:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 669 transitions. [2021-12-18 01:15:16,832 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 669 transitions. Word has length 274 [2021-12-18 01:15:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:15:16,833 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 669 transitions. [2021-12-18 01:15:16,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2021-12-18 01:15:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 669 transitions. [2021-12-18 01:15:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-18 01:15:16,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:15:16,835 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:15:16,858 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 01:15:17,055 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 01:15:17,055 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:15:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:15:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 436700544, now seen corresponding path program 1 times [2021-12-18 01:15:17,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:15:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493899382] [2021-12-18 01:15:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:17,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:15:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:15:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:15:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:15:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:15:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:15:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:15:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 01:15:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:15:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 01:15:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:15:17,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:15:17,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493899382] [2021-12-18 01:15:17,240 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-18 01:15:17,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105559813] [2021-12-18 01:15:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:17,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:15:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:15:17,241 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 01:15:17,242 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 01:15:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:17,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 3398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 01:15:17,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:15:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-12-18 01:15:18,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:15:18,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105559813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:15:18,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:15:18,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:15:18,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445699007] [2021-12-18 01:15:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:15:18,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:15:18,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:15:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:15:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:15:18,096 INFO L87 Difference]: Start difference. First operand 461 states and 669 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 01:15:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:15:18,112 INFO L93 Difference]: Finished difference Result 898 states and 1306 transitions. [2021-12-18 01:15:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:15:18,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 286 [2021-12-18 01:15:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:15:18,118 INFO L225 Difference]: With dead ends: 898 [2021-12-18 01:15:18,118 INFO L226 Difference]: Without dead ends: 455 [2021-12-18 01:15:18,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:15:18,120 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:15:18,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:15:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-12-18 01:15:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-12-18 01:15:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 310 states have (on average 1.2) internal successors, (372), 316 states have internal predecessors, (372), 105 states have call successors, (105), 29 states have call predecessors, (105), 38 states have return successors, (181), 109 states have call predecessors, (181), 103 states have call successors, (181) [2021-12-18 01:15:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 658 transitions. [2021-12-18 01:15:18,139 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 658 transitions. Word has length 286 [2021-12-18 01:15:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:15:18,139 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 658 transitions. [2021-12-18 01:15:18,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 01:15:18,140 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 658 transitions. [2021-12-18 01:15:18,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-18 01:15:18,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:15:18,141 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:15:18,164 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 01:15:18,359 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 01:15:18,360 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:15:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:15:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash -506997083, now seen corresponding path program 1 times [2021-12-18 01:15:18,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:15:18,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675436559] [2021-12-18 01:15:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:18,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:15:18,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:15:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475076582] [2021-12-18 01:15:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:18,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:15:18,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:15:18,423 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 01:15:18,425 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 01:15:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:19,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 3440 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-18 01:15:19,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:15:19,094 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 01:15:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 93 proven. 13 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-12-18 01:15:19,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:15:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-18 01:15:20,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:15:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675436559] [2021-12-18 01:15:20,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:15:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475076582] [2021-12-18 01:15:20,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475076582] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 01:15:20,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:15:20,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 27 [2021-12-18 01:15:20,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429445287] [2021-12-18 01:15:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:15:20,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 01:15:20,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:15:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 01:15:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2021-12-18 01:15:20,574 INFO L87 Difference]: Start difference. First operand 455 states and 658 transitions. Second operand has 15 states, 14 states have (on average 7.857142857142857) internal successors, (110), 10 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-18 01:15:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:15:20,745 INFO L93 Difference]: Finished difference Result 898 states and 1337 transitions. [2021-12-18 01:15:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:15:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.857142857142857) internal successors, (110), 10 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) Word has length 292 [2021-12-18 01:15:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:15:20,748 INFO L225 Difference]: With dead ends: 898 [2021-12-18 01:15:20,748 INFO L226 Difference]: Without dead ends: 497 [2021-12-18 01:15:20,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 557 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2021-12-18 01:15:20,751 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 17 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:15:20,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6052 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:15:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-18 01:15:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 471. [2021-12-18 01:15:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 325 states have (on average 1.2) internal successors, (390), 329 states have internal predecessors, (390), 105 states have call successors, (105), 29 states have call predecessors, (105), 39 states have return successors, (182), 112 states have call predecessors, (182), 103 states have call successors, (182) [2021-12-18 01:15:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 677 transitions. [2021-12-18 01:15:20,768 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 677 transitions. Word has length 292 [2021-12-18 01:15:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:15:20,768 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 677 transitions. [2021-12-18 01:15:20,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.857142857142857) internal successors, (110), 10 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-18 01:15:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 677 transitions. [2021-12-18 01:15:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-18 01:15:20,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:15:20,770 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:15:20,799 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 01:15:20,979 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 01:15:20,979 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:15:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:15:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1752682017, now seen corresponding path program 1 times [2021-12-18 01:15:20,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:15:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386814991] [2021-12-18 01:15:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:20,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:15:21,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:15:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238851801] [2021-12-18 01:15:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:21,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:15:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:15:21,027 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 01:15:21,045 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 01:15:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:21,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:15:21,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:15:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-18 01:15:21,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:15:21,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:15:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386814991] [2021-12-18 01:15:21,992 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:15:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238851801] [2021-12-18 01:15:21,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238851801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:15:21,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:15:21,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:15:21,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943707082] [2021-12-18 01:15:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:15:21,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:15:21,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:15:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:15:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:15:21,993 INFO L87 Difference]: Start difference. First operand 471 states and 677 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 01:15:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:15:22,183 INFO L93 Difference]: Finished difference Result 886 states and 1329 transitions. [2021-12-18 01:15:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:15:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 284 [2021-12-18 01:15:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:15:22,187 INFO L225 Difference]: With dead ends: 886 [2021-12-18 01:15:22,187 INFO L226 Difference]: Without dead ends: 469 [2021-12-18 01:15:22,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 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 01:15:22,189 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 13 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:15:22,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1594 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:15:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-18 01:15:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 463. [2021-12-18 01:15:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 318 states have (on average 1.1949685534591195) internal successors, (380), 322 states have internal predecessors, (380), 105 states have call successors, (105), 29 states have call predecessors, (105), 38 states have return successors, (170), 111 states have call predecessors, (170), 103 states have call successors, (170) [2021-12-18 01:15:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 655 transitions. [2021-12-18 01:15:22,204 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 655 transitions. Word has length 284 [2021-12-18 01:15:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:15:22,205 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 655 transitions. [2021-12-18 01:15:22,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 01:15:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 655 transitions. [2021-12-18 01:15:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-18 01:15:22,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:15:22,207 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:15:22,237 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 01:15:22,423 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 01:15:22,423 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:15:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:15:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash -692997029, now seen corresponding path program 1 times [2021-12-18 01:15:22,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:15:22,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277638721] [2021-12-18 01:15:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:22,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:15:22,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:15:22,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044873304] [2021-12-18 01:15:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:15:22,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:15:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:15:22,469 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 01:15:22,470 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 01:15:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:15:23,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 166 conjunts are in the unsatisfiable core [2021-12-18 01:15:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:15:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:15:23,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-18 01:15:23,378 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:15:23,379 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 01:15:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:15:25,425 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 01:15:27,543 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3629 (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_3629))) is different from true [2021-12-18 01:15:27,997 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3634 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3630 (Array Int Int)) (v_ArrVal_3631 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3634))) (= |c_#memory_$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_3631))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3630)))) is different from true [2021-12-18 01:15:40,287 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3634 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3630 (Array Int Int)) (v_ArrVal_3631 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3634))) (= |c_#memory_$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_3631))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3630)))) (not (= 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)))) is different from true [2021-12-18 01:15:40,383 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:15:40,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-18 01:15:40,407 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:15:40,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-18 01:15:41,298 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 83 treesize of output 71 [2021-12-18 01:15:41,304 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 35 treesize of output 31 [2021-12-18 01:15:41,306 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 50 treesize of output 42 [2021-12-18 01:15:43,989 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3638 Int) (v_ArrVal_3637 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3638))) (= |c_#memory_$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_3637))))) is different from true [2021-12-18 01:16:54,234 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_ArrVal_3637 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3637)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 40)) 0))) (exists ((v_ArrVal_3638 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (not (= (select (select (store |c_old(#memory_$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_3638)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 40)) 0)))) is different from true [2021-12-18 01:16:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 280 proven. 69 refuted. 20 times theorem prover too weak. 55 trivial. 33 not checked. [2021-12-18 01:16:54,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:16:56,831 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3657 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_3657)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 40)) 0)) (forall ((v_ArrVal_3658 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_3658)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 40)) 0))) is different from false [2021-12-18 01:16:56,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:16:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277638721] [2021-12-18 01:16:56,833 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:16:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044873304] [2021-12-18 01:16:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044873304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:16:56,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:16:56,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-12-18 01:16:56,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632593686] [2021-12-18 01:16:56,833 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:16:56,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-18 01:16:56,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:16:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-18 01:16:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1243, Unknown=137, NotChecked=474, Total=1980 [2021-12-18 01:16:56,835 INFO L87 Difference]: Start difference. First operand 463 states and 655 transitions. Second operand has 44 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 19 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (33), 17 states have call predecessors, (33), 19 states have call successors, (33) [2021-12-18 01:17:09,561 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3638 Int) (v_ArrVal_3637 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3638))) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3637))))) (exists ((v_ArrVal_3634 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3630 (Array Int Int)) (v_ArrVal_3631 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3634))) (= |c_#memory_$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_3631))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3630)))) (exists ((v_ArrVal_3629 (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_3629)))) is different from true [2021-12-18 01:17:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:17:40,366 INFO L93 Difference]: Finished difference Result 1172 states and 1751 transitions. [2021-12-18 01:17:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-18 01:17:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 19 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (33), 17 states have call predecessors, (33), 19 states have call successors, (33) Word has length 284 [2021-12-18 01:17:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:17:40,384 INFO L225 Difference]: With dead ends: 1172 [2021-12-18 01:17:40,384 INFO L226 Difference]: Without dead ends: 801 [2021-12-18 01:17:40,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 320 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 130.7s TimeCoverageRelationStatistics Valid=194, Invalid=2011, Unknown=175, NotChecked=700, Total=3080 [2021-12-18 01:17:40,389 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 573 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 5501 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 17404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 5501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11459 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:17:40,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 7949 Invalid, 17404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 5501 Invalid, 0 Unknown, 11459 Unchecked, 3.8s Time] [2021-12-18 01:17:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-18 01:17:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 557. [2021-12-18 01:17:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 389 states have (on average 1.1902313624678664) internal successors, (463), 397 states have internal predecessors, (463), 117 states have call successors, (117), 35 states have call predecessors, (117), 49 states have return successors, (206), 124 states have call predecessors, (206), 115 states have call successors, (206) [2021-12-18 01:17:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 786 transitions. [2021-12-18 01:17:40,414 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 786 transitions. Word has length 284 [2021-12-18 01:17:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:17:40,414 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 786 transitions. [2021-12-18 01:17:40,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 19 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (33), 17 states have call predecessors, (33), 19 states have call successors, (33) [2021-12-18 01:17:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 786 transitions. [2021-12-18 01:17:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-18 01:17:40,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:17:40,417 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:40,441 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 01:17:40,631 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 01:17:40,631 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:17:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:17:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1476433371, now seen corresponding path program 2 times [2021-12-18 01:17:40,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:17:40,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480546292] [2021-12-18 01:17:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:17:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:17:40,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:17:40,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150766969] [2021-12-18 01:17:40,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:17:40,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:17:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:17:40,674 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 01:17:40,675 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 01:17:41,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:17:41,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:17:42,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 177 conjunts are in the unsatisfiable core [2021-12-18 01:17:42,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:17:42,027 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 01:17:42,341 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:17:42,343 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 01:18:21,557 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-18 01:18:21,558 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 25 treesize of output 24 [2021-12-18 01:18:21,562 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 01:18:40,767 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 01:18:40,768 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 01:18:40,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 45 [2021-12-18 01:18:40,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:40,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 01:18:41,221 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3907 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3907))) is different from true [2021-12-18 01:18:43,528 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3908 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_3908)))) is different from true [2021-12-18 01:18:45,536 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3908 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|) 0 v_ArrVal_3908)))) is different from true [2021-12-18 01:18:45,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:45,753 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:18:45,753 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 59 treesize of output 95 [2021-12-18 01:18:45,767 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:18:45,767 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 01:18:45,798 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 01:18:45,846 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 01:18:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:46,028 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:18:46,028 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 23 treesize of output 25 [2021-12-18 01:18:46,061 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 18 treesize of output 14 [2021-12-18 01:18:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:46,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:18:46,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2021-12-18 01:18:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 257 proven. 28 refuted. 4 times theorem prover too weak. 158 trivial. 10 not checked. [2021-12-18 01:18:50,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:18:55,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:18:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480546292] [2021-12-18 01:18:55,169 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:18:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150766969] [2021-12-18 01:18:55,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150766969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:18:55,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:18:55,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-12-18 01:18:55,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630342238] [2021-12-18 01:18:55,170 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:18:55,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-18 01:18:55,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:18:55,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-18 01:18:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2301, Unknown=51, NotChecked=300, Total=2862 [2021-12-18 01:18:55,172 INFO L87 Difference]: Start difference. First operand 557 states and 786 transitions. Second operand has 46 states, 39 states have (on average 3.58974358974359) internal successors, (140), 38 states have internal predecessors, (140), 17 states have call successors, (29), 10 states have call predecessors, (29), 16 states have return successors, (27), 15 states have call predecessors, (27), 17 states have call successors, (27) [2021-12-18 01:19:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:19:56,717 INFO L93 Difference]: Finished difference Result 1219 states and 1795 transitions. [2021-12-18 01:19:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-18 01:19:56,717 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 3.58974358974359) internal successors, (140), 38 states have internal predecessors, (140), 17 states have call successors, (29), 10 states have call predecessors, (29), 16 states have return successors, (27), 15 states have call predecessors, (27), 17 states have call successors, (27) Word has length 284 [2021-12-18 01:19:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:19:56,722 INFO L225 Difference]: With dead ends: 1219 [2021-12-18 01:19:56,722 INFO L226 Difference]: Without dead ends: 754 [2021-12-18 01:19:56,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 382 SyntacticMatches, 14 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 129.4s TimeCoverageRelationStatistics Valid=360, Invalid=4098, Unknown=110, NotChecked=402, Total=4970 [2021-12-18 01:19:56,726 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 346 mSDsluCounter, 5156 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 12976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8712 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:19:56,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 5645 Invalid, 12976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 3894 Invalid, 0 Unknown, 8712 Unchecked, 2.8s Time] [2021-12-18 01:19:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-12-18 01:19:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 565. [2021-12-18 01:19:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 395 states have (on average 1.1898734177215189) internal successors, (470), 405 states have internal predecessors, (470), 117 states have call successors, (117), 35 states have call predecessors, (117), 51 states have return successors, (209), 124 states have call predecessors, (209), 115 states have call successors, (209) [2021-12-18 01:19:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 796 transitions. [2021-12-18 01:19:56,750 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 796 transitions. Word has length 284 [2021-12-18 01:19:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:19:56,751 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 796 transitions. [2021-12-18 01:19:56,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 3.58974358974359) internal successors, (140), 38 states have internal predecessors, (140), 17 states have call successors, (29), 10 states have call predecessors, (29), 16 states have return successors, (27), 15 states have call predecessors, (27), 17 states have call successors, (27) [2021-12-18 01:19:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 796 transitions. [2021-12-18 01:19:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-18 01:19:56,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:19:56,754 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:19:56,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-18 01:19:56,967 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 01:19:56,967 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:19:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:19:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash -89707803, now seen corresponding path program 1 times [2021-12-18 01:19:56,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:19:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824399193] [2021-12-18 01:19:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:19:56,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:19:57,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:19:57,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998617591] [2021-12-18 01:19:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:19:57,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:19:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:19:57,040 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 01:19:57,041 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 01:19:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:19:57,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3429 conjuncts, 174 conjunts are in the unsatisfiable core [2021-12-18 01:19:57,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:19:57,813 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 01:19:58,408 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:19:58,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 01:19:58,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:58,413 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 01:19:58,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:19:58,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 01:20:05,342 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 01:20:05,344 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 01:20:05,346 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 01:20:05,348 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 01:20:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,541 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 26 treesize of output 29 [2021-12-18 01:20:13,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,548 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 26 treesize of output 29 [2021-12-18 01:20:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,554 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 01:20:13,583 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 01:20:13,583 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 01:20:13,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 01:20:13,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 01:20:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:13,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 01:20:14,962 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4194 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4194))) (exists ((v_ArrVal_4193 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4193))) (exists ((v_ArrVal_4195 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4195)))) is different from true [2021-12-18 01:20:17,680 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4197 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_4197)))) is different from true [2021-12-18 01:20:19,687 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4197 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|) 0 v_ArrVal_4197)))) is different from true [2021-12-18 01:20:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:20,315 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:20:20,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 86 [2021-12-18 01:20:20,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:20,326 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 01:20:20,346 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:20:20,347 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 01:20:20,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:20,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-18 01:20:20,366 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 01:20:20,405 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 01:20:20,563 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:20:20,572 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 18 treesize of output 12 [2021-12-18 01:20:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:20,586 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 36 treesize of output 26 [2021-12-18 01:20:20,721 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 22 treesize of output 18 [2021-12-18 01:20:20,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:20:20,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:20:20,756 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 18 treesize of output 22 [2021-12-18 01:20:21,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-18 01:20:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 245 proven. 41 refuted. 0 times theorem prover too weak. 147 trivial. 10 not checked. [2021-12-18 01:20:21,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:20:24,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:20:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824399193] [2021-12-18 01:20:24,600 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:20:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998617591] [2021-12-18 01:20:24,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998617591] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:20:24,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:20:24,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-12-18 01:20:24,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092482667] [2021-12-18 01:20:24,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:20:24,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-18 01:20:24,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:20:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-18 01:20:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2208, Unknown=74, NotChecked=294, Total=2756 [2021-12-18 01:20:24,602 INFO L87 Difference]: Start difference. First operand 565 states and 796 transitions. Second operand has 46 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2021-12-18 01:20:45,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 01:20:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:20:46,924 INFO L93 Difference]: Finished difference Result 1221 states and 1798 transitions. [2021-12-18 01:20:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-18 01:20:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) Word has length 280 [2021-12-18 01:20:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:20:46,928 INFO L225 Difference]: With dead ends: 1221 [2021-12-18 01:20:46,928 INFO L226 Difference]: Without dead ends: 756 [2021-12-18 01:20:46,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 379 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1413 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=331, Invalid=4125, Unknown=112, NotChecked=402, Total=4970 [2021-12-18 01:20:46,931 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 542 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 735 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 6435 SdHoareTripleChecker+Invalid, 13434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 7300 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:20:46,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 6435 Invalid, 13434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 5398 Invalid, 1 Unknown, 7300 Unchecked, 7.2s Time] [2021-12-18 01:20:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-18 01:20:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 568. [2021-12-18 01:20:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 397 states have (on average 1.1889168765743072) internal successors, (472), 408 states have internal predecessors, (472), 117 states have call successors, (117), 35 states have call predecessors, (117), 52 states have return successors, (212), 124 states have call predecessors, (212), 115 states have call successors, (212) [2021-12-18 01:20:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 801 transitions. [2021-12-18 01:20:46,955 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 801 transitions. Word has length 280 [2021-12-18 01:20:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:20:46,955 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 801 transitions. [2021-12-18 01:20:46,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2021-12-18 01:20:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 801 transitions. [2021-12-18 01:20:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-12-18 01:20:46,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:20:46,958 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:20:46,984 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 01:20:47,181 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 01:20:47,181 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:20:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:20:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1458211964, now seen corresponding path program 1 times [2021-12-18 01:20:47,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:20:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070172742] [2021-12-18 01:20:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:20:47,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:20:47,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:20:47,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481519307] [2021-12-18 01:20:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:20:47,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:20:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:20:47,236 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 01:20:47,237 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 01:20:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:20:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 3445 conjuncts, 161 conjunts are in the unsatisfiable core [2021-12-18 01:20:47,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:20:47,979 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 01:20:48,661 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:20:48,661 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 01:21:30,851 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 01:21:30,869 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-18 01:21:30,870 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 25 treesize of output 24 [2021-12-18 01:21:47,317 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-18 01:21:47,317 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 25 treesize of output 24 [2021-12-18 01:21:47,330 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 01:22:11,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 47 [2021-12-18 01:22:11,176 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:22:11,177 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 01:22:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:11,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 01:22:11,713 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 01:22:11,716 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 19 treesize of output 11 [2021-12-18 01:22:11,832 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 01:22:11,919 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4483 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4483))) is different from true [2021-12-18 01:22:12,251 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 01:22:14,470 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4484 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_4484)))) is different from true [2021-12-18 01:22:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:22:31,070 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-12-18 01:22:31,070 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 59 treesize of output 1 [2021-12-18 01:22:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 246 proven. 23 refuted. 7 times theorem prover too weak. 167 trivial. 3 not checked. [2021-12-18 01:22:31,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:22:37,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:22:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070172742] [2021-12-18 01:22:37,036 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:22:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481519307] [2021-12-18 01:22:37,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481519307] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:22:37,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:22:37,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-12-18 01:22:37,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812661297] [2021-12-18 01:22:37,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:22:37,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-18 01:22:37,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:22:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-18 01:22:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2334, Unknown=39, NotChecked=198, Total=2756 [2021-12-18 01:22:37,038 INFO L87 Difference]: Start difference. First operand 568 states and 801 transitions. Second operand has 45 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 37 states have internal predecessors, (139), 15 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-18 01:22:46,322 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4484 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_4484)))) (exists ((v_ArrVal_4483 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4483)))) is different from true [2021-12-18 01:22:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:50,059 INFO L93 Difference]: Finished difference Result 1132 states and 1601 transitions. [2021-12-18 01:22:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-18 01:22:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 37 states have internal predecessors, (139), 15 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) Word has length 285 [2021-12-18 01:22:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:50,086 INFO L225 Difference]: With dead ends: 1132 [2021-12-18 01:22:50,086 INFO L226 Difference]: Without dead ends: 662 [2021-12-18 01:22:50,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 382 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 116.8s TimeCoverageRelationStatistics Valid=238, Invalid=3149, Unknown=47, NotChecked=348, Total=3782 [2021-12-18 01:22:50,089 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 84 mSDsluCounter, 4893 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5340 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3430 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:50,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 5340 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1768 Invalid, 0 Unknown, 3430 Unchecked, 2.2s Time] [2021-12-18 01:22:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-12-18 01:22:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 605. [2021-12-18 01:22:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 428 states have (on average 1.1939252336448598) internal successors, (511), 439 states have internal predecessors, (511), 120 states have call successors, (120), 38 states have call predecessors, (120), 55 states have return successors, (221), 127 states have call predecessors, (221), 118 states have call successors, (221) [2021-12-18 01:22:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 852 transitions. [2021-12-18 01:22:50,118 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 852 transitions. Word has length 285 [2021-12-18 01:22:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:50,118 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 852 transitions. [2021-12-18 01:22:50,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 37 states have internal predecessors, (139), 15 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-18 01:22:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 852 transitions. [2021-12-18 01:22:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-18 01:22:50,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:50,122 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:22:50,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-18 01:22:50,346 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 01:22:50,346 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash -484216718, now seen corresponding path program 1 times [2021-12-18 01:22:50,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:22:50,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842749637] [2021-12-18 01:22:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:50,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:22:50,386 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:22:50,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569558391] [2021-12-18 01:22:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:50,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:22:50,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:22:50,387 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 01:22:50,393 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 01:22:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:51,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-18 01:22:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:51,125 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 01:22:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 275 proven. 22 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 01:22:51,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:22:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-18 01:22:53,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:22:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842749637] [2021-12-18 01:22:53,542 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:22:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569558391] [2021-12-18 01:22:53,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569558391] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:22:53,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:22:53,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 32 [2021-12-18 01:22:53,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227913359] [2021-12-18 01:22:53,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:22:53,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-18 01:22:53,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:22:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-18 01:22:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2021-12-18 01:22:53,544 INFO L87 Difference]: Start difference. First operand 605 states and 852 transitions. Second operand has 32 states, 27 states have (on average 6.7407407407407405) internal successors, (182), 23 states have internal predecessors, (182), 9 states have call successors, (36), 3 states have call predecessors, (36), 10 states have return successors, (38), 13 states have call predecessors, (38), 8 states have call successors, (38) [2021-12-18 01:22:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:22:55,449 INFO L93 Difference]: Finished difference Result 1144 states and 1627 transitions. [2021-12-18 01:22:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 01:22:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 6.7407407407407405) internal successors, (182), 23 states have internal predecessors, (182), 9 states have call successors, (36), 3 states have call predecessors, (36), 10 states have return successors, (38), 13 states have call predecessors, (38), 8 states have call successors, (38) Word has length 288 [2021-12-18 01:22:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:22:55,453 INFO L225 Difference]: With dead ends: 1144 [2021-12-18 01:22:55,453 INFO L226 Difference]: Without dead ends: 675 [2021-12-18 01:22:55,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 543 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 01:22:55,456 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 35 mSDsluCounter, 10883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 11311 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:22:55,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 11311 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-18 01:22:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-12-18 01:22:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 649. [2021-12-18 01:22:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 468 states have (on average 1.1944444444444444) internal successors, (559), 478 states have internal predecessors, (559), 122 states have call successors, (122), 38 states have call predecessors, (122), 57 states have return successors, (237), 132 states have call predecessors, (237), 120 states have call successors, (237) [2021-12-18 01:22:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 918 transitions. [2021-12-18 01:22:55,479 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 918 transitions. Word has length 288 [2021-12-18 01:22:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:22:55,479 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 918 transitions. [2021-12-18 01:22:55,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 6.7407407407407405) internal successors, (182), 23 states have internal predecessors, (182), 9 states have call successors, (36), 3 states have call predecessors, (36), 10 states have return successors, (38), 13 states have call predecessors, (38), 8 states have call successors, (38) [2021-12-18 01:22:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 918 transitions. [2021-12-18 01:22:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-12-18 01:22:55,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:22:55,483 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:22:55,506 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 01:22:55,695 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 01:22:55,695 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:22:55,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:22:55,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1310280191, now seen corresponding path program 1 times [2021-12-18 01:22:55,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:22:55,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730842236] [2021-12-18 01:22:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:55,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:22:55,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:22:55,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313864339] [2021-12-18 01:22:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:22:55,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:22:55,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:22:55,755 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 01:22:55,756 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 01:22:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:22:56,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3451 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-18 01:22:56,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:22:58,889 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4952 Int) (v_ArrVal_4951 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4952))) (= |c_#memory_$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_4951))))) is different from true [2021-12-18 01:23:00,921 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4952 Int) (v_ArrVal_4951 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4952))) (= |c_#memory_$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_4951))))) is different from true [2021-12-18 01:23:01,017 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:23:01,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-18 01:23:01,046 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:23:01,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-18 01:23:01,646 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4954 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4955 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4955)) (= |c_#memory_$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_4954))))) is different from true [2021-12-18 01:23:03,760 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4959 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4959)))) (exists ((v_ArrVal_4957 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4957))))) is different from true [2021-12-18 01:23:05,783 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4959 Int) (v_ArrVal_4957 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4957))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4959))))) is different from true [2021-12-18 01:23:06,092 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4959 Int) (v_ArrVal_4957 Int) (v_ArrVal_4954 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4955 (Array Int Int))) (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4955)) (.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4954)))) (and (let ((.cse1 (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 40))) (or (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (not (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)))) (= |c_#memory_$Pointer$.base| (store .cse2 |aws_array_list_is_valid_~#required_size~0.base| (store (select .cse2 |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4957))) (= |c_#memory_$Pointer$.offset| (store .cse0 |aws_array_list_is_valid_~#required_size~0.base| (store (select .cse0 |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4959)))))) is different from true [2021-12-18 01:23:08,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:08,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 01:23:09,013 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 01:23:09,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2021-12-18 01:23:09,059 INFO L354 Elim1Store]: treesize reduction 102, result has 20.9 percent of original size [2021-12-18 01:23:09,060 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 71 treesize of output 89 [2021-12-18 01:23:09,082 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 8 treesize of output 6 [2021-12-18 01:23:09,199 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 01:23:09,275 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 18 treesize of output 14 [2021-12-18 01:23:09,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 01:23:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:09,301 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 01:23:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 105 proven. 112 refuted. 31 times theorem prover too weak. 103 trivial. 101 not checked. [2021-12-18 01:23:10,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:23:11,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:11,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730842236] [2021-12-18 01:23:11,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:23:11,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313864339] [2021-12-18 01:23:11,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313864339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:23:11,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:23:11,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-12-18 01:23:11,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374372742] [2021-12-18 01:23:11,203 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:23:11,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-18 01:23:11,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-18 01:23:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1448, Unknown=73, NotChecked=498, Total=2162 [2021-12-18 01:23:11,205 INFO L87 Difference]: Start difference. First operand 649 states and 918 transitions. Second operand has 40 states, 37 states have (on average 4.837837837837838) internal successors, (179), 37 states have internal predecessors, (179), 18 states have call successors, (35), 6 states have call predecessors, (35), 15 states have return successors, (35), 18 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 01:23:13,865 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4954 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4955 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4955)) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4954))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4952 Int) (v_ArrVal_4951 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4952))) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4951))))) (exists ((v_ArrVal_4959 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4959)))) (exists ((v_ArrVal_4957 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4957))))) is different from true [2021-12-18 01:23:21,994 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4959 Int) (v_ArrVal_4957 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4957))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_4959))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4952 Int) (v_ArrVal_4951 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4952))) (= |c_#memory_$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_4951)))))) is different from true [2021-12-18 01:23:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:42,737 INFO L93 Difference]: Finished difference Result 1654 states and 2415 transitions. [2021-12-18 01:23:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-18 01:23:42,738 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.837837837837838) internal successors, (179), 37 states have internal predecessors, (179), 18 states have call successors, (35), 6 states have call predecessors, (35), 15 states have return successors, (35), 18 states have call predecessors, (35), 17 states have call successors, (35) Word has length 293 [2021-12-18 01:23:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:42,757 INFO L225 Difference]: With dead ends: 1654 [2021-12-18 01:23:42,758 INFO L226 Difference]: Without dead ends: 1243 [2021-12-18 01:23:42,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 303 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=361, Invalid=3220, Unknown=111, NotChecked=1000, Total=4692 [2021-12-18 01:23:42,760 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 458 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 5921 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 14666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 5921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8523 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:42,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 6396 Invalid, 14666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 5921 Invalid, 0 Unknown, 8523 Unchecked, 6.8s Time] [2021-12-18 01:23:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-12-18 01:23:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1057. [2021-12-18 01:23:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 778 states have (on average 1.1850899742930592) internal successors, (922), 791 states have internal predecessors, (922), 197 states have call successors, (197), 45 states have call predecessors, (197), 80 states have return successors, (499), 220 states have call predecessors, (499), 195 states have call successors, (499) [2021-12-18 01:23:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1618 transitions. [2021-12-18 01:23:42,807 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1618 transitions. Word has length 293 [2021-12-18 01:23:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:42,808 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1618 transitions. [2021-12-18 01:23:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.837837837837838) internal successors, (179), 37 states have internal predecessors, (179), 18 states have call successors, (35), 6 states have call predecessors, (35), 15 states have return successors, (35), 18 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 01:23:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1618 transitions. [2021-12-18 01:23:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-12-18 01:23:42,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:42,814 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 01:23:42,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-18 01:23:43,027 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 01:23:43,027 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -816898899, now seen corresponding path program 1 times [2021-12-18 01:23:43,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996514128] [2021-12-18 01:23:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:43,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:43,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:23:43,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458816947] [2021-12-18 01:23:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:43,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:23:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:43,074 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 01:23:43,078 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 01:23:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 175 conjunts are in the unsatisfiable core [2021-12-18 01:23:43,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:43,878 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 01:23:44,707 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:23:44,707 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 01:23:45,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 01:23:46,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2021-12-18 01:23:46,695 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 01:23:50,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2021-12-18 01:23:50,866 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 01:23:55,037 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:23:55,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-12-18 01:23:57,940 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-12-18 01:23:57,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-12-18 01:23:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:57,957 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 30 treesize of output 33 [2021-12-18 01:23:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:59,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-12-18 01:23:59,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:23:59,648 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 01:24:01,553 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5214 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5214))) (exists ((v_ArrVal_5215 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5215)))) is different from true [2021-12-18 01:24:10,158 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5218 Int) (v_ArrVal_5217 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5217)) (= |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_5218))))) is different from true [2021-12-18 01:24:10,190 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5218 Int) (v_ArrVal_5217 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5217)) (= |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|) 0 v_ArrVal_5218))))) is different from true [2021-12-18 01:24:16,925 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-18 01:24:16,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-18 01:24:16,939 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:16,939 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 01:24:16,944 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 01:24:16,949 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 01:24:17,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:17,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-12-18 01:24:17,057 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 7 [2021-12-18 01:24:17,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:17,302 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:24:17,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 86 [2021-12-18 01:24:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:17,357 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-18 01:24:17,358 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 2 case distinctions, treesize of input 30 treesize of output 40 [2021-12-18 01:24:17,376 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:24:17,376 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:24:17,460 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 17 treesize of output 9 [2021-12-18 01:24:17,497 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 01:24:17,532 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 01:24:17,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:24:17,566 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 40 treesize of output 40 [2021-12-18 01:24:17,743 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 22 treesize of output 18 [2021-12-18 01:24:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:17,827 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 18 treesize of output 22 [2021-12-18 01:24:18,241 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 01:24:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 245 proven. 39 refuted. 0 times theorem prover too weak. 152 trivial. 10 not checked. [2021-12-18 01:24:18,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:24:25,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996514128] [2021-12-18 01:24:25,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:24:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458816947] [2021-12-18 01:24:25,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458816947] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:25,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:24:25,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-12-18 01:24:25,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084554170] [2021-12-18 01:24:25,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:24:25,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-18 01:24:25,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-18 01:24:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2149, Unknown=40, NotChecked=288, Total=2652 [2021-12-18 01:24:25,744 INFO L87 Difference]: Start difference. First operand 1057 states and 1618 transitions. Second operand has 42 states, 37 states have (on average 3.972972972972973) internal successors, (147), 36 states have internal predecessors, (147), 18 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (29), 16 states have call predecessors, (29), 18 states have call successors, (29) [2021-12-18 01:24:31,350 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5218 Int) (v_ArrVal_5217 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5217)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5218))))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_5214 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5214))) (= 0 (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|)) (exists ((v_ArrVal_5215 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5215)))))) is different from true [2021-12-18 01:24:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:35,967 INFO L93 Difference]: Finished difference Result 2049 states and 3244 transitions. [2021-12-18 01:24:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-18 01:24:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 3.972972972972973) internal successors, (147), 36 states have internal predecessors, (147), 18 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (29), 16 states have call predecessors, (29), 18 states have call successors, (29) Word has length 290 [2021-12-18 01:24:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:35,976 INFO L225 Difference]: With dead ends: 2049 [2021-12-18 01:24:35,977 INFO L226 Difference]: Without dead ends: 1249 [2021-12-18 01:24:35,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 385 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=348, Invalid=4288, Unknown=72, NotChecked=548, Total=5256 [2021-12-18 01:24:35,983 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 369 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 5166 SdHoareTripleChecker+Invalid, 10617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6939 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:35,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 5166 Invalid, 10617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 3313 Invalid, 0 Unknown, 6939 Unchecked, 2.9s Time] [2021-12-18 01:24:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-12-18 01:24:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1066. [2021-12-18 01:24:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 784 states have (on average 1.183673469387755) internal successors, (928), 797 states have internal predecessors, (928), 199 states have call successors, (199), 46 states have call predecessors, (199), 81 states have return successors, (524), 222 states have call predecessors, (524), 197 states have call successors, (524) [2021-12-18 01:24:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1651 transitions. [2021-12-18 01:24:36,053 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1651 transitions. Word has length 290 [2021-12-18 01:24:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:36,053 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1651 transitions. [2021-12-18 01:24:36,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 3.972972972972973) internal successors, (147), 36 states have internal predecessors, (147), 18 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (29), 16 states have call predecessors, (29), 18 states have call successors, (29) [2021-12-18 01:24:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1651 transitions. [2021-12-18 01:24:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-18 01:24:36,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:36,058 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 01:24:36,087 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 01:24:36,267 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 01:24:36,267 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 61000160, now seen corresponding path program 1 times [2021-12-18 01:24:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389808214] [2021-12-18 01:24:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:36,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:36,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 01:24:36,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041386419] [2021-12-18 01:24:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:36,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:36,316 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 01:24:36,317 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 01:24:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:37,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3447 conjuncts, 234 conjunts are in the unsatisfiable core [2021-12-18 01:24:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:37,145 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 01:24:37,337 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 01:24:37,356 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 01:24:37,400 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 01:24:37,400 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 01:24:37,411 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 01:24:37,546 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5497 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5497))) is different from true [2021-12-18 01:24:39,088 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5498 (Array Int Int)) (v_ArrVal_5501 Int) (v_ArrVal_5499 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5499))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5498)) (= |c_#memory_$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_5501))))) is different from true [2021-12-18 01:24:39,138 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5498 (Array Int Int)) (v_ArrVal_5501 Int) (v_ArrVal_5499 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5498)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5501))) (= |c_#memory_$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_5499))))) is different from true [2021-12-18 01:24:39,313 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 01:24:39,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-18 01:24:39,339 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:39,339 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 18 treesize of output 24 [2021-12-18 01:24:39,479 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 5 [2021-12-18 01:24:48,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:48,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:48,866 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-12-18 01:24:48,866 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 46 treesize of output 84 [2021-12-18 01:24:48,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:24:48,911 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 01:24:48,972 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 01:24:49,083 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 01:24:49,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 01:24:49,519 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 40 treesize of output 40 [2021-12-18 01:24:49,929 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 17 treesize of output 13 [2021-12-18 01:24:49,940 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 01:24:49,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:49,997 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 16 treesize of output 20 [2021-12-18 01:24:51,107 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5507 Int) (v_ArrVal_5506 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5504 (Array Int Int))) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5506))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5504)) (= |c_#memory_$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_5507))))) is different from true [2021-12-18 01:25:05,188 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 41 treesize of output 33 [2021-12-18 01:25:05,193 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 24 [2021-12-18 01:25:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 248 proven. 101 refuted. 18 times theorem prover too weak. 60 trivial. 25 not checked. [2021-12-18 01:25:05,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:25:08,258 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445| Int) (v_ArrVal_5536 (Array Int Int))) (or (and (forall ((v_ArrVal_5535 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445|) 0 v_ArrVal_5535)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 40)) 0)) (forall ((v_ArrVal_5534 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445|) 0 v_ArrVal_5534)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 40)) 0))) (= 0 (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_445| v_ArrVal_5536) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 16)) 18446744073709551616)))) is different from false [2021-12-18 01:25:08,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:25:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389808214] [2021-12-18 01:25:08,268 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 01:25:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041386419] [2021-12-18 01:25:08,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041386419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:25:08,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:25:08,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-12-18 01:25:08,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355892043] [2021-12-18 01:25:08,269 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 01:25:08,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-18 01:25:08,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:25:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-18 01:25:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2391, Unknown=26, NotChecked=510, Total=3080 [2021-12-18 01:25:08,270 INFO L87 Difference]: Start difference. First operand 1066 states and 1651 transitions. Second operand has 50 states, 45 states have (on average 4.066666666666666) internal successors, (183), 42 states have internal predecessors, (183), 19 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (33), 17 states have call predecessors, (33), 19 states have call successors, (33) [2021-12-18 01:25:28,133 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-18 01:25:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 01:25:28,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 305 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=252, Invalid=3517, Unknown=33, NotChecked=620, Total=4422 [2021-12-18 01:25:28,135 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 102 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1460 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:28,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 797 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 536 Invalid, 0 Unknown, 1460 Unchecked, 0.4s Time] [2021-12-18 01:25:28,143 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 101 [2021-12-18 01:25:28,162 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 01:25:28,336 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 01:25:28,337 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 49 more [2021-12-18 01:25:28,340 INFO L158 Benchmark]: Toolchain (without parser) took 674041.98ms. Allocated memory was 90.2MB in the beginning and 423.6MB in the end (delta: 333.4MB). Free memory was 53.3MB in the beginning and 246.6MB in the end (delta: -193.3MB). Peak memory consumption was 141.6MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,340 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 01:25:28,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1652.56ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 53.3MB in the beginning and 91.3MB in the end (delta: -38.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 166.96ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 81.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,341 INFO L158 Benchmark]: Boogie Preprocessor took 94.80ms. Allocated memory is still 163.6MB. Free memory was 81.7MB in the beginning and 74.2MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,341 INFO L158 Benchmark]: RCFGBuilder took 982.37ms. Allocated memory is still 163.6MB. Free memory was 74.2MB in the beginning and 72.8MB in the end (delta: 1.4MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,341 INFO L158 Benchmark]: TraceAbstraction took 671141.24ms. Allocated memory was 163.6MB in the beginning and 423.6MB in the end (delta: 260.0MB). Free memory was 72.8MB in the beginning and 246.6MB in the end (delta: -173.9MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2021-12-18 01:25:28,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1652.56ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 53.3MB in the beginning and 91.3MB in the end (delta: -38.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 166.96ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 81.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.80ms. Allocated memory is still 163.6MB. Free memory was 81.7MB in the beginning and 74.2MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 982.37ms. Allocated memory is still 163.6MB. Free memory was 74.2MB in the beginning and 72.8MB in the end (delta: 1.4MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * TraceAbstraction took 671141.24ms. Allocated memory was 163.6MB in the beginning and 423.6MB in the end (delta: 260.0MB). Free memory was 72.8MB in the beginning and 246.6MB in the end (delta: -173.9MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_up_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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:25:29,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:25:29,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:25:29,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:25:29,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:25:29,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:25:29,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:25:29,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:25:29,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:25:29,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:25:29,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:25:29,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:25:29,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:25:29,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:25:29,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:25:29,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:25:29,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:25:29,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:25:29,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:25:29,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:25:29,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:25:29,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:25:29,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:25:29,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:25:29,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:25:29,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:25:29,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:25:29,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:25:29,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:25:29,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:25:29,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:25:29,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:25:29,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:25:29,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:25:29,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:25:29,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:25:29,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:25:29,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:25:29,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:25:29,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:25:29,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:25:29,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-18 01:25:30,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:25:30,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:25:30,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:25:30,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:25:30,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:25:30,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:25:30,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:25:30,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:25:30,024 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:25:30,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:25:30,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:25:30,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:25:30,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:25:30,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:25:30,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:25:30,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:25:30,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:25:30,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:25:30,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 01:25:30,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-12-18 01:25:30,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:25:30,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:25:30,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:25:30,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:25:30,326 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:25:30,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:25:30,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7443c6a2c/b75090d2bb4945f4bc8605e219b8ff56/FLAG3ae6db857 [2021-12-18 01:25:30,928 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:25:30,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:25:30,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7443c6a2c/b75090d2bb4945f4bc8605e219b8ff56/FLAG3ae6db857 [2021-12-18 01:25:31,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7443c6a2c/b75090d2bb4945f4bc8605e219b8ff56 [2021-12-18 01:25:31,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:25:31,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:25:31,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:25:31,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:25:31,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:25:31,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:25:31" (1/1) ... [2021-12-18 01:25:31,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5f2c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:31, skipping insertion in model container [2021-12-18 01:25:31,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:25:31" (1/1) ... [2021-12-18 01:25:31,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:25:31,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:25:31,682 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_up_harness.i[4502,4515] [2021-12-18 01:25:31,686 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_up_harness.i[4562,4575] [2021-12-18 01:25:32,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,232 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,449 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:25:32,452 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:25:32,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:25:32,456 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:25:32,463 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:25:32,465 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:25:32,466 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:25:32,467 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:25:32,472 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:25:32,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:25:32,579 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:25:32,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,684 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,684 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:25:32,753 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 01:25:32,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:25:32,810 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_up_harness.i[4502,4515] [2021-12-18 01:25:32,811 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_up_harness.i[4562,4575] [2021-12-18 01:25:32,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:25:32,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:25:32,898 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:25:32,899 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:25:32,900 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:25:32,900 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:25:32,901 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:25:32,901 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:25:32,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:25:32,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:25:32,926 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:25:32,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:32,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:25:33,022 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:25:33,038 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_up_harness.i[4502,4515] [2021-12-18 01:25:33,039 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_up_harness.i[4562,4575] [2021-12-18 01:25:33,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,106 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:25:33,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:25:33,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:25:33,108 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:25:33,108 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:25:33,108 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:25:33,109 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:25:33,109 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:25:33,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:25:33,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:25:33,125 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:25:33,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,176 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,176 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:25:33,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:25:33,485 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:25:33,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33 WrapperNode [2021-12-18 01:25:33,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:25:33,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:25:33,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:25:33,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:25:33,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,631 INFO L137 Inliner]: procedures = 717, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 809 [2021-12-18 01:25:33,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:25:33,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:25:33,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:25:33,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:25:33,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:25:33,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:25:33,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:25:33,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:25:33,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (1/1) ... [2021-12-18 01:25:33,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:25:33,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:25:33,766 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 01:25:33,786 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 01:25:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-18 01:25:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-18 01:25:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-18 01:25:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-18 01:25:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:25:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-18 01:25:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-18 01:25:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:25:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:25:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-18 01:25:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-18 01:25:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:25:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:25:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-18 01:25:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-18 01:25:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:25:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-18 01:25:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:25:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-18 01:25:34,114 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:25:34,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:25:35,561 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:25:35,568 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:25:35,568 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 01:25:35,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:25:35 BoogieIcfgContainer [2021-12-18 01:25:35,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:25:35,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:25:35,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:25:35,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:25:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:25:31" (1/3) ... [2021-12-18 01:25:35,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2be04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:25:35, skipping insertion in model container [2021-12-18 01:25:35,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:25:33" (2/3) ... [2021-12-18 01:25:35,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2be04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:25:35, skipping insertion in model container [2021-12-18 01:25:35,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:25:35" (3/3) ... [2021-12-18 01:25:35,578 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-12-18 01:25:35,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:25:35,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 01:25:35,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:25:35,645 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 01:25:35,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 01:25:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 196 states have internal predecessors, (243), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-18 01:25:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 01:25:35,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:35,686 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:25:35,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash 320525751, now seen corresponding path program 1 times [2021-12-18 01:25:35,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:35,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943591120] [2021-12-18 01:25:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:35,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:35,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:35,719 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 01:25:35,731 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 01:25:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:36,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 01:25:36,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 01:25:36,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:36,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943591120] [2021-12-18 01:25:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943591120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:36,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:36,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 01:25:36,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718581790] [2021-12-18 01:25:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:36,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 01:25:36,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 01:25:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:25:36,585 INFO L87 Difference]: Start difference. First operand has 314 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 196 states have internal predecessors, (243), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 01:25:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:36,655 INFO L93 Difference]: Finished difference Result 615 states and 926 transitions. [2021-12-18 01:25:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 01:25:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2021-12-18 01:25:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:36,668 INFO L225 Difference]: With dead ends: 615 [2021-12-18 01:25:36,668 INFO L226 Difference]: Without dead ends: 307 [2021-12-18 01:25:36,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 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 01:25:36,685 INFO L933 BasicCegarLoop]: 423 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, 423 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 01:25:36,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:25:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-12-18 01:25:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-12-18 01:25:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 188 states have (on average 1.2234042553191489) internal successors, (230), 190 states have internal predecessors, (230), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-18 01:25:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 418 transitions. [2021-12-18 01:25:36,752 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 418 transitions. Word has length 104 [2021-12-18 01:25:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:36,754 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 418 transitions. [2021-12-18 01:25:36,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 01:25:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 418 transitions. [2021-12-18 01:25:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 01:25:36,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:36,757 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:25:36,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 01:25:36,980 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 01:25:36,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash -225956610, now seen corresponding path program 1 times [2021-12-18 01:25:36,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:36,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168172869] [2021-12-18 01:25:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:36,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:36,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:36,986 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 01:25:36,999 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 01:25:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:37,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:25:37,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:25:37,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:37,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:37,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168172869] [2021-12-18 01:25:37,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168172869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:37,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:37,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:25:37,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353756689] [2021-12-18 01:25:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:37,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:25:37,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:25:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:25:37,870 INFO L87 Difference]: Start difference. First operand 307 states and 418 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 01:25:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:38,054 INFO L93 Difference]: Finished difference Result 580 states and 796 transitions. [2021-12-18 01:25:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:25:38,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2021-12-18 01:25:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:38,061 INFO L225 Difference]: With dead ends: 580 [2021-12-18 01:25:38,061 INFO L226 Difference]: Without dead ends: 309 [2021-12-18 01:25:38,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 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 01:25:38,062 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 46 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:38,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1538 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:25:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-18 01:25:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-18 01:25:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 192 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-12-18 01:25:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 423 transitions. [2021-12-18 01:25:38,088 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 423 transitions. Word has length 104 [2021-12-18 01:25:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:38,089 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 423 transitions. [2021-12-18 01:25:38,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 01:25:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 423 transitions. [2021-12-18 01:25:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-18 01:25:38,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:38,090 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:25:38,127 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 01:25:38,316 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 01:25:38,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1037784090, now seen corresponding path program 1 times [2021-12-18 01:25:38,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:38,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234726557] [2021-12-18 01:25:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:38,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:38,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:38,319 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 01:25:38,319 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 01:25:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:38,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:25:38,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:25:39,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:39,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:39,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234726557] [2021-12-18 01:25:39,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234726557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:39,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:39,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:25:39,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571848199] [2021-12-18 01:25:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:39,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:25:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:25:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:25:39,152 INFO L87 Difference]: Start difference. First operand 309 states and 423 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 01:25:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:39,660 INFO L93 Difference]: Finished difference Result 603 states and 843 transitions. [2021-12-18 01:25:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:25:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2021-12-18 01:25:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:39,664 INFO L225 Difference]: With dead ends: 603 [2021-12-18 01:25:39,664 INFO L226 Difference]: Without dead ends: 330 [2021-12-18 01:25:39,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 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 01:25:39,665 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 98 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:39,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2220 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:25:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-18 01:25:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2021-12-18 01:25:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 205 states have (on average 1.2341463414634146) internal successors, (253), 208 states have internal predecessors, (253), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-18 01:25:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2021-12-18 01:25:39,681 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 112 [2021-12-18 01:25:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:39,682 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2021-12-18 01:25:39,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 01:25:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2021-12-18 01:25:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 01:25:39,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:39,684 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:39,708 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 01:25:39,897 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 01:25:39,898 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1833433112, now seen corresponding path program 1 times [2021-12-18 01:25:39,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:39,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257357467] [2021-12-18 01:25:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:39,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:39,901 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 01:25:39,902 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 01:25:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:40,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:25:40,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 01:25:40,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:40,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257357467] [2021-12-18 01:25:40,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257357467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:40,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:40,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:25:40,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40336910] [2021-12-18 01:25:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:40,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:25:40,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:25:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:25:40,868 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 01:25:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:41,148 INFO L93 Difference]: Finished difference Result 628 states and 892 transitions. [2021-12-18 01:25:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:25:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2021-12-18 01:25:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:41,151 INFO L225 Difference]: With dead ends: 628 [2021-12-18 01:25:41,151 INFO L226 Difference]: Without dead ends: 336 [2021-12-18 01:25:41,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:25:41,153 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 69 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:41,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1892 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:25:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-18 01:25:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 328. [2021-12-18 01:25:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 205 states have (on average 1.2341463414634146) internal successors, (253), 208 states have internal predecessors, (253), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-18 01:25:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2021-12-18 01:25:41,166 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 127 [2021-12-18 01:25:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:41,166 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2021-12-18 01:25:41,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-18 01:25:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2021-12-18 01:25:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-18 01:25:41,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:41,168 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-12-18 01:25:41,201 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 01:25:41,383 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 01:25:41,383 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1942839837, now seen corresponding path program 1 times [2021-12-18 01:25:41,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:41,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286380329] [2021-12-18 01:25:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:41,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:41,403 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 01:25:41,439 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 01:25:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:42,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:25:42,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-18 01:25:42,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:42,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:42,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286380329] [2021-12-18 01:25:42,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286380329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:42,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:42,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:25:42,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300025686] [2021-12-18 01:25:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:42,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:25:42,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:25:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:25:42,450 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:25:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:43,221 INFO L93 Difference]: Finished difference Result 650 states and 921 transitions. [2021-12-18 01:25:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:25:43,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2021-12-18 01:25:43,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:43,224 INFO L225 Difference]: With dead ends: 650 [2021-12-18 01:25:43,224 INFO L226 Difference]: Without dead ends: 358 [2021-12-18 01:25:43,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 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 01:25:43,225 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 141 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:43,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 2584 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:25:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-18 01:25:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 340. [2021-12-18 01:25:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 215 states have (on average 1.241860465116279) internal successors, (267), 218 states have internal predecessors, (267), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-18 01:25:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 476 transitions. [2021-12-18 01:25:43,238 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 476 transitions. Word has length 143 [2021-12-18 01:25:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:43,239 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 476 transitions. [2021-12-18 01:25:43,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:25:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 476 transitions. [2021-12-18 01:25:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:25:43,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:43,241 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:43,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-18 01:25:43,454 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 01:25:43,454 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 501938161, now seen corresponding path program 1 times [2021-12-18 01:25:43,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:43,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867197611] [2021-12-18 01:25:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:43,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:43,457 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 01:25:43,458 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 01:25:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:25:44,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 01:25:45,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:45,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:45,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867197611] [2021-12-18 01:25:45,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867197611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:45,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:25:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314977814] [2021-12-18 01:25:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:25:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:25:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:25:45,114 INFO L87 Difference]: Start difference. First operand 340 states and 476 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:25:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:47,291 INFO L93 Difference]: Finished difference Result 680 states and 973 transitions. [2021-12-18 01:25:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:25:47,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-18 01:25:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:47,296 INFO L225 Difference]: With dead ends: 680 [2021-12-18 01:25:47,296 INFO L226 Difference]: Without dead ends: 376 [2021-12-18 01:25:47,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 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 01:25:47,298 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 21 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:47,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1949 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 01:25:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-18 01:25:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2021-12-18 01:25:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 223 states have (on average 1.242152466367713) internal successors, (277), 226 states have internal predecessors, (277), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-18 01:25:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 486 transitions. [2021-12-18 01:25:47,310 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 486 transitions. Word has length 158 [2021-12-18 01:25:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:47,310 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 486 transitions. [2021-12-18 01:25:47,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:25:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 486 transitions. [2021-12-18 01:25:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:25:47,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:47,312 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:47,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-18 01:25:47,523 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 01:25:47,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 945838835, now seen corresponding path program 1 times [2021-12-18 01:25:47,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221519637] [2021-12-18 01:25:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:47,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:47,526 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 01:25:47,527 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 01:25:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:48,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:25:48,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:25:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 01:25:49,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:25:49,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:25:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221519637] [2021-12-18 01:25:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221519637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:25:49,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:25:49,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:25:49,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068307968] [2021-12-18 01:25:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:25:49,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:25:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:25:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:25:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:25:49,121 INFO L87 Difference]: Start difference. First operand 348 states and 486 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:25:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:25:51,730 INFO L93 Difference]: Finished difference Result 690 states and 983 transitions. [2021-12-18 01:25:51,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 01:25:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-18 01:25:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:25:51,735 INFO L225 Difference]: With dead ends: 690 [2021-12-18 01:25:51,735 INFO L226 Difference]: Without dead ends: 378 [2021-12-18 01:25:51,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:25:51,738 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 17 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:25:51,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2358 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-18 01:25:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-18 01:25:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 352. [2021-12-18 01:25:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 227 states have (on average 1.2378854625550662) internal successors, (281), 230 states have internal predecessors, (281), 98 states have call successors, (98), 24 states have call predecessors, (98), 25 states have return successors, (111), 97 states have call predecessors, (111), 96 states have call successors, (111) [2021-12-18 01:25:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 490 transitions. [2021-12-18 01:25:51,754 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 490 transitions. Word has length 158 [2021-12-18 01:25:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:25:51,755 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 490 transitions. [2021-12-18 01:25:51,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:25:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 490 transitions. [2021-12-18 01:25:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:25:51,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:25:51,758 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:51,800 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 01:25:51,967 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 01:25:51,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:25:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:25:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1082747275, now seen corresponding path program 1 times [2021-12-18 01:25:51,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:25:51,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363430012] [2021-12-18 01:25:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:25:51,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:25:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:25:51,970 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 01:25:51,972 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 01:25:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:25:52,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-18 01:25:52,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:02,718 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 01:26:02,723 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 01:26:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-18 01:26:04,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:04,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363430012] [2021-12-18 01:26:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363430012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:04,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:04,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:26:04,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185730416] [2021-12-18 01:26:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:26:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:26:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=86, Unknown=2, NotChecked=0, Total=110 [2021-12-18 01:26:04,819 INFO L87 Difference]: Start difference. First operand 352 states and 490 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:26:24,409 WARN L227 SmtUtils]: Spent 12.11s 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 01:26:26,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:26:28,535 WARN L534 Checker$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 01:26:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:30,392 INFO L93 Difference]: Finished difference Result 697 states and 985 transitions. [2021-12-18 01:26:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:26:30,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 158 [2021-12-18 01:26:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:30,396 INFO L225 Difference]: With dead ends: 697 [2021-12-18 01:26:30,396 INFO L226 Difference]: Without dead ends: 407 [2021-12-18 01:26:30,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=70, Invalid=231, Unknown=5, NotChecked=0, Total=306 [2021-12-18 01:26:30,398 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 88 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:30,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3404 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 431 Invalid, 2 Unknown, 63 Unchecked, 6.6s Time] [2021-12-18 01:26:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-18 01:26:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 373. [2021-12-18 01:26:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 247 states have internal predecessors, (301), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (119), 100 states have call predecessors, (119), 98 states have call successors, (119) [2021-12-18 01:26:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 520 transitions. [2021-12-18 01:26:30,414 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 520 transitions. Word has length 158 [2021-12-18 01:26:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 520 transitions. [2021-12-18 01:26:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-18 01:26:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 520 transitions. [2021-12-18 01:26:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:26:30,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:30,417 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:30,458 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 01:26:30,621 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 01:26:30,621 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1888723571, now seen corresponding path program 1 times [2021-12-18 01:26:30,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077600539] [2021-12-18 01:26:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:30,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:30,625 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 01:26:30,627 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 01:26:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:31,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:26:31,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 01:26:31,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:31,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:31,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077600539] [2021-12-18 01:26:31,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077600539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:31,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:31,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:26:31,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437050692] [2021-12-18 01:26:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:31,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:26:31,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:26:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:26:31,838 INFO L87 Difference]: Start difference. First operand 373 states and 520 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:26:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:31,974 INFO L93 Difference]: Finished difference Result 721 states and 1027 transitions. [2021-12-18 01:26:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:26:31,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-18 01:26:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:31,977 INFO L225 Difference]: With dead ends: 721 [2021-12-18 01:26:31,977 INFO L226 Difference]: Without dead ends: 393 [2021-12-18 01:26:31,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 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 01:26:31,988 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 8 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1706 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 01:26:31,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1706 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:26:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-18 01:26:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 381. [2021-12-18 01:26:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 252 states have (on average 1.2301587301587302) internal successors, (310), 255 states have internal predecessors, (310), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (119), 100 states have call predecessors, (119), 98 states have call successors, (119) [2021-12-18 01:26:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 529 transitions. [2021-12-18 01:26:32,002 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 529 transitions. Word has length 158 [2021-12-18 01:26:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:32,002 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 529 transitions. [2021-12-18 01:26:32,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 01:26:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 529 transitions. [2021-12-18 01:26:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 01:26:32,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:32,004 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:32,044 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 01:26:32,219 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 01:26:32,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1527781988, now seen corresponding path program 1 times [2021-12-18 01:26:32,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:32,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504962254] [2021-12-18 01:26:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:32,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:32,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:32,224 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 01:26:32,251 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 01:26:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:26:33,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-18 01:26:33,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:33,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:33,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504962254] [2021-12-18 01:26:33,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504962254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:33,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:33,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:26:33,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173755667] [2021-12-18 01:26:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:33,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:26:33,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:26:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:26:33,546 INFO L87 Difference]: Start difference. First operand 381 states and 529 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-18 01:26:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:33,870 INFO L93 Difference]: Finished difference Result 690 states and 967 transitions. [2021-12-18 01:26:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:26:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 160 [2021-12-18 01:26:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:33,872 INFO L225 Difference]: With dead ends: 690 [2021-12-18 01:26:33,872 INFO L226 Difference]: Without dead ends: 383 [2021-12-18 01:26:33,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 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 01:26:33,874 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 98 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:33,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 2254 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:26:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-18 01:26:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-12-18 01:26:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 253 states have (on average 1.2292490118577075) internal successors, (311), 257 states have internal predecessors, (311), 100 states have call successors, (100), 25 states have call predecessors, (100), 28 states have return successors, (121), 100 states have call predecessors, (121), 98 states have call successors, (121) [2021-12-18 01:26:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 532 transitions. [2021-12-18 01:26:33,886 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 532 transitions. Word has length 160 [2021-12-18 01:26:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:33,887 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 532 transitions. [2021-12-18 01:26:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-18 01:26:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 532 transitions. [2021-12-18 01:26:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-18 01:26:33,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:33,888 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:33,931 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 01:26:34,097 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 01:26:34,097 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1195653730, now seen corresponding path program 1 times [2021-12-18 01:26:34,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:34,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654171831] [2021-12-18 01:26:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:34,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:34,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:34,100 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 01:26:34,101 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 01:26:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:35,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:26:35,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-18 01:26:35,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:35,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654171831] [2021-12-18 01:26:35,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654171831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:35,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:35,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:26:35,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375146019] [2021-12-18 01:26:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:26:35,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:26:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:26:35,886 INFO L87 Difference]: Start difference. First operand 383 states and 532 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 01:26:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:36,328 INFO L93 Difference]: Finished difference Result 695 states and 974 transitions. [2021-12-18 01:26:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:26:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 206 [2021-12-18 01:26:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:36,331 INFO L225 Difference]: With dead ends: 695 [2021-12-18 01:26:36,332 INFO L226 Difference]: Without dead ends: 386 [2021-12-18 01:26:36,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 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 01:26:36,333 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 121 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:36,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2592 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:26:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-18 01:26:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 384. [2021-12-18 01:26:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 254 states have (on average 1.2283464566929134) internal successors, (312), 258 states have internal predecessors, (312), 100 states have call successors, (100), 25 states have call predecessors, (100), 28 states have return successors, (121), 100 states have call predecessors, (121), 98 states have call successors, (121) [2021-12-18 01:26:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 533 transitions. [2021-12-18 01:26:36,343 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 533 transitions. Word has length 206 [2021-12-18 01:26:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:36,345 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 533 transitions. [2021-12-18 01:26:36,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 01:26:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 533 transitions. [2021-12-18 01:26:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-18 01:26:36,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:36,347 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 01:26:36,394 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 01:26:36,567 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 01:26:36,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 512750478, now seen corresponding path program 1 times [2021-12-18 01:26:36,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:36,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383098885] [2021-12-18 01:26:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:36,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:36,571 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 01:26:36,572 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 01:26:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:37,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 01:26:37,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-18 01:26:37,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:26:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-18 01:26:38,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:38,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383098885] [2021-12-18 01:26:38,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383098885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:26:38,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:26:38,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-12-18 01:26:38,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490033184] [2021-12-18 01:26:38,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:26:38,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:26:38,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:26:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:26:38,377 INFO L87 Difference]: Start difference. First operand 384 states and 533 transitions. Second operand has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-18 01:26:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:38,981 INFO L93 Difference]: Finished difference Result 727 states and 1016 transitions. [2021-12-18 01:26:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:26:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) Word has length 208 [2021-12-18 01:26:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:38,984 INFO L225 Difference]: With dead ends: 727 [2021-12-18 01:26:38,984 INFO L226 Difference]: Without dead ends: 417 [2021-12-18 01:26:38,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 01:26:38,985 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 153 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 2884 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:26:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-18 01:26:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 411. [2021-12-18 01:26:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 280 states have (on average 1.2357142857142858) internal successors, (346), 283 states have internal predecessors, (346), 101 states have call successors, (101), 25 states have call predecessors, (101), 28 states have return successors, (122), 102 states have call predecessors, (122), 99 states have call successors, (122) [2021-12-18 01:26:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 569 transitions. [2021-12-18 01:26:39,008 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 569 transitions. Word has length 208 [2021-12-18 01:26:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:39,008 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 569 transitions. [2021-12-18 01:26:39,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-18 01:26:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 569 transitions. [2021-12-18 01:26:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-18 01:26:39,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:39,011 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:39,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-18 01:26:39,231 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 01:26:39,231 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 601024338, now seen corresponding path program 1 times [2021-12-18 01:26:39,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:39,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321107909] [2021-12-18 01:26:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:39,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:39,235 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 01:26:39,237 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 01:26:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:41,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 01:26:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-18 01:26:41,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:41,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:41,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321107909] [2021-12-18 01:26:41,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321107909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:41,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:41,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:26:41,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206074652] [2021-12-18 01:26:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:41,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:26:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:26:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:26:41,471 INFO L87 Difference]: Start difference. First operand 411 states and 569 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:26:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:41,510 INFO L93 Difference]: Finished difference Result 612 states and 834 transitions. [2021-12-18 01:26:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:26:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2021-12-18 01:26:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:41,513 INFO L225 Difference]: With dead ends: 612 [2021-12-18 01:26:41,513 INFO L226 Difference]: Without dead ends: 431 [2021-12-18 01:26:41,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:26:41,514 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 13 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:41,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 841 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:26:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-18 01:26:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-12-18 01:26:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 283 states have (on average 1.2332155477031803) internal successors, (349), 286 states have internal predecessors, (349), 101 states have call successors, (101), 25 states have call predecessors, (101), 28 states have return successors, (122), 102 states have call predecessors, (122), 99 states have call successors, (122) [2021-12-18 01:26:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 572 transitions. [2021-12-18 01:26:41,525 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 572 transitions. Word has length 268 [2021-12-18 01:26:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:41,525 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 572 transitions. [2021-12-18 01:26:41,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:26:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 572 transitions. [2021-12-18 01:26:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-18 01:26:41,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:41,526 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 01:26:41,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-18 01:26:41,739 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 01:26:41,739 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1755671932, now seen corresponding path program 1 times [2021-12-18 01:26:41,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859186588] [2021-12-18 01:26:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:41,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:41,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:41,743 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 01:26:41,744 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 01:26:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:43,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 01:26:43,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 01:26:43,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:43,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:43,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859186588] [2021-12-18 01:26:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859186588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:43,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:43,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:26:43,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728707706] [2021-12-18 01:26:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:43,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:26:43,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:26:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:26:43,856 INFO L87 Difference]: Start difference. First operand 414 states and 572 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-18 01:26:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:45,013 INFO L93 Difference]: Finished difference Result 756 states and 1051 transitions. [2021-12-18 01:26:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:26:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 240 [2021-12-18 01:26:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:45,016 INFO L225 Difference]: With dead ends: 756 [2021-12-18 01:26:45,016 INFO L226 Difference]: Without dead ends: 416 [2021-12-18 01:26:45,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:26:45,018 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 193 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:45,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 3258 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 01:26:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-18 01:26:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 384. [2021-12-18 01:26:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 255 states have (on average 1.227450980392157) internal successors, (313), 258 states have internal predecessors, (313), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-18 01:26:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 530 transitions. [2021-12-18 01:26:45,029 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 530 transitions. Word has length 240 [2021-12-18 01:26:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 530 transitions. [2021-12-18 01:26:45,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-18 01:26:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 530 transitions. [2021-12-18 01:26:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-18 01:26:45,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:45,031 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:45,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-18 01:26:45,249 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 01:26:45,249 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:45,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash -140028404, now seen corresponding path program 1 times [2021-12-18 01:26:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:45,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961486989] [2021-12-18 01:26:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:45,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:45,253 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 01:26:45,255 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 01:26:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:47,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 01:26:47,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-18 01:26:47,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:47,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:47,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961486989] [2021-12-18 01:26:47,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961486989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:47,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:47,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:26:47,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669334944] [2021-12-18 01:26:47,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:47,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:26:47,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:26:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:26:47,535 INFO L87 Difference]: Start difference. First operand 384 states and 530 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:26:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:47,572 INFO L93 Difference]: Finished difference Result 557 states and 757 transitions. [2021-12-18 01:26:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:26:47,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 270 [2021-12-18 01:26:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:47,576 INFO L225 Difference]: With dead ends: 557 [2021-12-18 01:26:47,576 INFO L226 Difference]: Without dead ends: 406 [2021-12-18 01:26:47,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:26:47,577 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 14 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 845 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 01:26:47,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 845 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:26:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-18 01:26:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 386. [2021-12-18 01:26:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 260 states have internal predecessors, (315), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-18 01:26:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2021-12-18 01:26:47,590 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 532 transitions. Word has length 270 [2021-12-18 01:26:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:47,591 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-12-18 01:26:47,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:26:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 532 transitions. [2021-12-18 01:26:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-18 01:26:47,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:47,593 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:47,648 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 01:26:47,815 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 01:26:47,815 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1356182130, now seen corresponding path program 1 times [2021-12-18 01:26:47,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:47,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886853125] [2021-12-18 01:26:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:47,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:47,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:47,828 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 01:26:47,829 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 01:26:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:26:53,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:54,261 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-18 01:26:54,261 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 01:26:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-18 01:26:54,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:54,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:54,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886853125] [2021-12-18 01:26:54,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886853125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:54,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:54,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:26:54,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519323194] [2021-12-18 01:26:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:54,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:26:54,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:26:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:26:54,554 INFO L87 Difference]: Start difference. First operand 386 states and 532 transitions. Second operand has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 01:26:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:57,357 INFO L93 Difference]: Finished difference Result 704 states and 979 transitions. [2021-12-18 01:26:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:26:57,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 270 [2021-12-18 01:26:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:57,361 INFO L225 Difference]: With dead ends: 704 [2021-12-18 01:26:57,362 INFO L226 Difference]: Without dead ends: 389 [2021-12-18 01:26:57,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:26:57,364 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 5 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:57,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2544 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 34 Unchecked, 2.6s Time] [2021-12-18 01:26:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-18 01:26:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2021-12-18 01:26:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 259 states have (on average 1.223938223938224) internal successors, (317), 262 states have internal predecessors, (317), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-18 01:26:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 534 transitions. [2021-12-18 01:26:57,376 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 534 transitions. Word has length 270 [2021-12-18 01:26:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:57,376 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 534 transitions. [2021-12-18 01:26:57,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 01:26:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 534 transitions. [2021-12-18 01:26:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-18 01:26:57,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:57,379 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:57,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-18 01:26:57,591 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 01:26:57,591 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -278439071, now seen corresponding path program 1 times [2021-12-18 01:26:57,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920954151] [2021-12-18 01:26:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:57,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:57,595 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 01:26:57,596 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 01:26:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:26:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 01:26:59,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:26:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-18 01:26:59,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:26:59,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:26:59,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920954151] [2021-12-18 01:26:59,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920954151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:26:59,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:26:59,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:26:59,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805761805] [2021-12-18 01:26:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:26:59,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:26:59,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:26:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:26:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:26:59,506 INFO L87 Difference]: Start difference. First operand 388 states and 534 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 01:26:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:26:59,595 INFO L93 Difference]: Finished difference Result 739 states and 1041 transitions. [2021-12-18 01:26:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:26:59,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 275 [2021-12-18 01:26:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:26:59,598 INFO L225 Difference]: With dead ends: 739 [2021-12-18 01:26:59,598 INFO L226 Difference]: Without dead ends: 393 [2021-12-18 01:26:59,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 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 01:26:59,601 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 7 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:26:59,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1229 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:26:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-18 01:26:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2021-12-18 01:26:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 260 states have (on average 1.2230769230769232) internal successors, (318), 263 states have internal predecessors, (318), 100 states have call successors, (100), 25 states have call predecessors, (100), 27 states have return successors, (117), 100 states have call predecessors, (117), 98 states have call successors, (117) [2021-12-18 01:26:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 535 transitions. [2021-12-18 01:26:59,637 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 535 transitions. Word has length 275 [2021-12-18 01:26:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:26:59,637 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 535 transitions. [2021-12-18 01:26:59,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 01:26:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 535 transitions. [2021-12-18 01:26:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-18 01:26:59,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:26:59,639 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:59,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-18 01:26:59,863 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 01:26:59,864 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:26:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:26:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1775833590, now seen corresponding path program 1 times [2021-12-18 01:26:59,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:26:59,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247227857] [2021-12-18 01:26:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:26:59,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:26:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:26:59,867 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 01:26:59,868 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 01:27:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:01,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 01:27:01,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:27:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-12-18 01:27:01,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:27:01,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:27:01,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247227857] [2021-12-18 01:27:01,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247227857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:27:01,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:27:01,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:27:01,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854145068] [2021-12-18 01:27:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:27:01,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:27:01,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:27:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:27:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:27:01,874 INFO L87 Difference]: Start difference. First operand 389 states and 535 transitions. Second operand has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 01:27:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:02,288 INFO L93 Difference]: Finished difference Result 747 states and 1036 transitions. [2021-12-18 01:27:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 01:27:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 275 [2021-12-18 01:27:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:02,291 INFO L225 Difference]: With dead ends: 747 [2021-12-18 01:27:02,292 INFO L226 Difference]: Without dead ends: 403 [2021-12-18 01:27:02,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 266 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 01:27:02,293 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 4 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3507 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 01:27:02,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3507 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 01:27:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-18 01:27:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 396. [2021-12-18 01:27:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 265 states have (on average 1.2188679245283018) internal successors, (323), 269 states have internal predecessors, (323), 100 states have call successors, (100), 25 states have call predecessors, (100), 29 states have return successors, (126), 101 states have call predecessors, (126), 98 states have call successors, (126) [2021-12-18 01:27:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 549 transitions. [2021-12-18 01:27:02,304 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 549 transitions. Word has length 275 [2021-12-18 01:27:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:02,305 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 549 transitions. [2021-12-18 01:27:02,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 01:27:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 549 transitions. [2021-12-18 01:27:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-18 01:27:02,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:02,306 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:02,352 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 01:27:02,522 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 01:27:02,522 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash -432987408, now seen corresponding path program 1 times [2021-12-18 01:27:02,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:27:02,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916193680] [2021-12-18 01:27:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:02,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:27:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:27:02,525 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 01:27:02,528 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 01:27:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:04,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 01:27:04,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:27:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 232 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-18 01:27:04,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:27:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-12-18 01:27:05,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:27:05,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916193680] [2021-12-18 01:27:05,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916193680] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:27:05,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:27:05,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 01:27:05,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746113552] [2021-12-18 01:27:05,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:27:05,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:27:05,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:27:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:27:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:27:05,092 INFO L87 Difference]: Start difference. First operand 396 states and 549 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 01:27:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:05,371 INFO L93 Difference]: Finished difference Result 768 states and 1097 transitions. [2021-12-18 01:27:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:27:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 278 [2021-12-18 01:27:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:05,374 INFO L225 Difference]: With dead ends: 768 [2021-12-18 01:27:05,374 INFO L226 Difference]: Without dead ends: 411 [2021-12-18 01:27:05,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 548 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 01:27:05,376 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 44 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:05,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1652 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:27:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-18 01:27:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 405. [2021-12-18 01:27:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 274 states have (on average 1.2226277372262773) internal successors, (335), 278 states have internal predecessors, (335), 100 states have call successors, (100), 25 states have call predecessors, (100), 29 states have return successors, (126), 101 states have call predecessors, (126), 98 states have call successors, (126) [2021-12-18 01:27:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 561 transitions. [2021-12-18 01:27:05,392 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 561 transitions. Word has length 278 [2021-12-18 01:27:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:05,392 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 561 transitions. [2021-12-18 01:27:05,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 01:27:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 561 transitions. [2021-12-18 01:27:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-18 01:27:05,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:05,394 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:05,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-18 01:27:05,615 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 01:27:05,615 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1218434005, now seen corresponding path program 1 times [2021-12-18 01:27:05,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:27:05,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152127229] [2021-12-18 01:27:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:05,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:27:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:27:05,618 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 01:27:05,619 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 01:27:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 01:27:10,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:27:11,283 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-12-18 01:27:11,284 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 01:27:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-18 01:27:11,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:27:11,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:27:11,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152127229] [2021-12-18 01:27:11,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152127229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:27:11,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:27:11,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 01:27:11,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761445185] [2021-12-18 01:27:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:27:11,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 01:27:11,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:27:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 01:27:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:27:11,680 INFO L87 Difference]: Start difference. First operand 405 states and 561 transitions. Second operand has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2021-12-18 01:27:16,691 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 01:27:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:18,778 INFO L93 Difference]: Finished difference Result 798 states and 1135 transitions. [2021-12-18 01:27:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:27:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 284 [2021-12-18 01:27:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:18,783 INFO L225 Difference]: With dead ends: 798 [2021-12-18 01:27:18,783 INFO L226 Difference]: Without dead ends: 429 [2021-12-18 01:27:18,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:27:18,785 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 101 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:18,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 3627 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 688 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-12-18 01:27:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-18 01:27:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 415. [2021-12-18 01:27:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 286 states have internal predecessors, (343), 100 states have call successors, (100), 25 states have call predecessors, (100), 31 states have return successors, (137), 103 states have call predecessors, (137), 98 states have call successors, (137) [2021-12-18 01:27:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 580 transitions. [2021-12-18 01:27:18,807 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 580 transitions. Word has length 284 [2021-12-18 01:27:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:18,807 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 580 transitions. [2021-12-18 01:27:18,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2021-12-18 01:27:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 580 transitions. [2021-12-18 01:27:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-18 01:27:18,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:18,809 INFO L514 BasicCegarLoop]: trace histogram [7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:18,873 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 01:27:19,010 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 01:27:19,010 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 71813605, now seen corresponding path program 1 times [2021-12-18 01:27:19,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:27:19,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980729257] [2021-12-18 01:27:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:19,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:27:19,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:27:19,014 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 01:27:19,015 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 01:27:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:27:20,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:27:20,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:27:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-18 01:27:20,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:27:20,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 01:27:20,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980729257] [2021-12-18 01:27:20,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980729257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:27:20,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:27:20,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:27:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542163590] [2021-12-18 01:27:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:27:20,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:27:20,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 01:27:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:27:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:27:20,978 INFO L87 Difference]: Start difference. First operand 415 states and 580 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:27:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:27:21,052 INFO L93 Difference]: Finished difference Result 794 states and 1149 transitions. [2021-12-18 01:27:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:27:21,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 284 [2021-12-18 01:27:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:27:21,057 INFO L225 Difference]: With dead ends: 794 [2021-12-18 01:27:21,057 INFO L226 Difference]: Without dead ends: 415 [2021-12-18 01:27:21,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 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 01:27:21,059 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 7 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:27:21,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1246 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:27:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-18 01:27:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-12-18 01:27:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 282 states have (on average 1.2092198581560283) internal successors, (341), 286 states have internal predecessors, (341), 100 states have call successors, (100), 25 states have call predecessors, (100), 31 states have return successors, (137), 103 states have call predecessors, (137), 98 states have call successors, (137) [2021-12-18 01:27:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 578 transitions. [2021-12-18 01:27:21,074 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 578 transitions. Word has length 284 [2021-12-18 01:27:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:27:21,074 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 578 transitions. [2021-12-18 01:27:21,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 01:27:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 578 transitions. [2021-12-18 01:27:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-12-18 01:27:21,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:27:21,076 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-18 01:27:21,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-18 01:27:21,280 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 01:27:21,280 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:27:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:27:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 322697849, now seen corresponding path program 1 times [2021-12-18 01:27:21,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 01:27:21,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938582222] [2021-12-18 01:27:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:27:21,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 01:27:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 01:27:21,284 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 01:27:21,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process Killed by 15