./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_hash_table_swap_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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:09:05,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:09:05,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:09:05,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:09:05,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:09:05,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:09:05,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:09:05,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:09:05,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:09:05,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:09:05,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:09:05,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:09:05,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:09:05,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:09:05,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:09:05,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:09:05,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:09:05,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:09:05,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:09:05,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:09:05,648 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:09:05,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:09:05,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:09:05,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:09:05,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:09:05,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:09:05,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:09:05,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:09:05,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:09:05,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:09:05,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:09:05,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:09:05,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:09:05,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:09:05,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:09:05,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:09:05,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:09:05,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:09:05,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:09:05,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:09:05,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:09:05,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:09:05,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:09:05,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:09:05,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:09:05,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:09:05,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:09:05,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:09:05,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:09:05,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:09:05,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:09:05,681 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:09:05,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:09:05,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:09:05,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:09:05,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:09:05,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:09:05,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:09:05,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:09:05,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:09:05,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:09:05,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:09:05,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:09:05,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:09:05,689 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:09:05,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:09:05,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:09:05,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2022-07-12 11:09:05,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:09:05,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:09:05,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:09:05,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:09:05,913 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:09:05,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-07-12 11:09:05,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2712a2b85/5fd4547cd948411a8d6988accf491236/FLAG964d3b80e [2022-07-12 11:09:06,593 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:09:06,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-07-12 11:09:06,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2712a2b85/5fd4547cd948411a8d6988accf491236/FLAG964d3b80e [2022-07-12 11:09:06,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2712a2b85/5fd4547cd948411a8d6988accf491236 [2022-07-12 11:09:06,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:09:06,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:09:06,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:09:06,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:09:06,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:09:06,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:09:06" (1/1) ... [2022-07-12 11:09:06,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db08530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:06, skipping insertion in model container [2022-07-12 11:09:06,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:09:06" (1/1) ... [2022-07-12 11:09:06,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:09:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:09:06,945 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_hash_table_swap_harness.i[4493,4506] [2022-07-12 11:09:06,950 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_hash_table_swap_harness.i[4553,4566] [2022-07-12 11:09:07,471 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,472 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,472 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,472 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,473 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,481 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,482 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,484 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:07,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:09:07,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:09:07,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:09:07,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:09:07,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:09:07,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:09:07,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:09:07,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:09:07,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:09:07,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:09:07,813 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:09:08,002 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,049 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,050 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,056 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,056 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,070 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,072 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,073 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,073 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,073 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,074 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:09:08,136 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:09:08,156 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_hash_table_swap_harness.i[4493,4506] [2022-07-12 11:09:08,156 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_hash_table_swap_harness.i[4553,4566] [2022-07-12 11:09:08,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,190 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,190 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,192 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:09:08,213 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:09:08,214 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:09:08,214 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:09:08,214 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:09:08,215 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:09:08,215 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:09:08,215 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:09:08,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:09:08,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:09:08,234 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:09:08,335 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,335 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,350 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,350 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:09:08,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:09:08,517 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:09:08,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08 WrapperNode [2022-07-12 11:09:08,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:09:08,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:09:08,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:09:08,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:09:08,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,668 INFO L137 Inliner]: procedures = 774, calls = 2441, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 599 [2022-07-12 11:09:08,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:09:08,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:09:08,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:09:08,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:09:08,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:09:08,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:09:08,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:09:08,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:09:08,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (1/1) ... [2022-07-12 11:09:08,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:09:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:08,764 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) [2022-07-12 11:09:08,782 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 [2022-07-12 11:09:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-12 11:09:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2022-07-12 11:09:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2022-07-12 11:09:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:09:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 11:09:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 11:09:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:09:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:09:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-12 11:09:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-12 11:09:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:09:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:09:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:09:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:09:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:09:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:09:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:09:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 11:09:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 11:09:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:09:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-12 11:09:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-12 11:09:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:09:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:09:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:09:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:09:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-12 11:09:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-12 11:09:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:09:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-12 11:09:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-12 11:09:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:09:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:09:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-12 11:09:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-12 11:09:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:09:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2022-07-12 11:09:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2022-07-12 11:09:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 11:09:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 11:09:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-12 11:09:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-12 11:09:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2022-07-12 11:09:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2022-07-12 11:09:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:09:09,105 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:09:09,107 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:09:09,633 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:09:09,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:09:09,640 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:09:09,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:09:09 BoogieIcfgContainer [2022-07-12 11:09:09,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:09:09,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:09:09,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:09:09,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:09:09,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:09:06" (1/3) ... [2022-07-12 11:09:09,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a01e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:09:09, skipping insertion in model container [2022-07-12 11:09:09,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:09:08" (2/3) ... [2022-07-12 11:09:09,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a01e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:09:09, skipping insertion in model container [2022-07-12 11:09:09,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:09:09" (3/3) ... [2022-07-12 11:09:09,653 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2022-07-12 11:09:09,664 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:09:09,664 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:09:09,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:09:09,721 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a892186, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15382f3c [2022-07-12 11:09:09,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:09:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 11:09:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 11:09:09,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:09,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:09,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1925006632, now seen corresponding path program 1 times [2022-07-12 11:09:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:09,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382268954] [2022-07-12 11:09:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 11:09:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:09:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:09:10,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:10,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382268954] [2022-07-12 11:09:10,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382268954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:10,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:10,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 11:09:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220296476] [2022-07-12 11:09:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:10,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 11:09:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 11:09:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:09:10,148 INFO L87 Difference]: Start difference. First operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:10,177 INFO L93 Difference]: Finished difference Result 268 states and 349 transitions. [2022-07-12 11:09:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 11:09:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-07-12 11:09:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:10,183 INFO L225 Difference]: With dead ends: 268 [2022-07-12 11:09:10,184 INFO L226 Difference]: Without dead ends: 131 [2022-07-12 11:09:10,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:09:10,191 INFO L413 NwaCegarLoop]: 166 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, 166 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:10,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:09:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-12 11:09:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-12 11:09:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 83 states have internal predecessors, (91), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 11:09:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-07-12 11:09:10,253 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 25 [2022-07-12 11:09:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:10,253 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-07-12 11:09:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-07-12 11:09:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 11:09:10,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:10,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:10,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:09:10,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -69138074, now seen corresponding path program 1 times [2022-07-12 11:09:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:10,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902479222] [2022-07-12 11:09:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 11:09:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:09:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:09:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:10,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902479222] [2022-07-12 11:09:10,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902479222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:10,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:10,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:09:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209017188] [2022-07-12 11:09:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:09:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:09:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:09:10,479 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:10,522 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2022-07-12 11:09:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:09:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-07-12 11:09:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:10,528 INFO L225 Difference]: With dead ends: 185 [2022-07-12 11:09:10,528 INFO L226 Difference]: Without dead ends: 147 [2022-07-12 11:09:10,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:09:10,531 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 321 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:09:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-12 11:09:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-07-12 11:09:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 89 states have internal predecessors, (98), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:09:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2022-07-12 11:09:10,546 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 25 [2022-07-12 11:09:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:10,546 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2022-07-12 11:09:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2022-07-12 11:09:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 11:09:10,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:10,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:10,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:09:10,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1141503883, now seen corresponding path program 1 times [2022-07-12 11:09:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589251453] [2022-07-12 11:09:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 11:09:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:09:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:09:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589251453] [2022-07-12 11:09:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589251453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:10,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:09:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126600299] [2022-07-12 11:09:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:10,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:09:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:09:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:09:10,723 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:10,748 INFO L93 Difference]: Finished difference Result 190 states and 234 transitions. [2022-07-12 11:09:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:09:10,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-07-12 11:09:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:10,751 INFO L225 Difference]: With dead ends: 190 [2022-07-12 11:09:10,752 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 11:09:10,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:09:10,754 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 320 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:09:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 11:09:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 11:09:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 93 states have internal predecessors, (102), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-12 11:09:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 188 transitions. [2022-07-12 11:09:10,776 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 188 transitions. Word has length 26 [2022-07-12 11:09:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:10,776 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 188 transitions. [2022-07-12 11:09:10,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 11:09:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 188 transitions. [2022-07-12 11:09:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 11:09:10,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:10,784 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:10,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 11:09:10,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash -478144861, now seen corresponding path program 1 times [2022-07-12 11:09:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:10,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057287206] [2022-07-12 11:09:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:10,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:09:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263036610] [2022-07-12 11:09:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:10,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:10,886 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) [2022-07-12 11:09:10,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:09:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:09:11,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 11:09:11,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057287206] [2022-07-12 11:09:11,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:09:11,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263036610] [2022-07-12 11:09:11,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263036610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:11,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:11,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:09:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730963355] [2022-07-12 11:09:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:11,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:09:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:09:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:09:11,445 INFO L87 Difference]: Start difference. First operand 151 states and 188 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:09:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:11,470 INFO L93 Difference]: Finished difference Result 301 states and 381 transitions. [2022-07-12 11:09:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:09:11,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 126 [2022-07-12 11:09:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:11,471 INFO L225 Difference]: With dead ends: 301 [2022-07-12 11:09:11,472 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 11:09:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:09:11,473 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 623 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:09:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 11:09:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-12 11:09:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.127659574468085) internal successors, (106), 97 states have internal predecessors, (106), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-07-12 11:09:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2022-07-12 11:09:11,480 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 126 [2022-07-12 11:09:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:11,481 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 193 transitions. [2022-07-12 11:09:11,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:09:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 193 transitions. [2022-07-12 11:09:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 11:09:11,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:11,483 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:11,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:11,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1837351329, now seen corresponding path program 1 times [2022-07-12 11:09:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523612801] [2022-07-12 11:09:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:09:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:09:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:09:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:09:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:09:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:09:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 11:09:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523612801] [2022-07-12 11:09:12,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523612801] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094179717] [2022-07-12 11:09:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:12,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:12,253 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) [2022-07-12 11:09:12,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:09:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:12,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 11:09:12,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:12,738 INFO L390 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 11 treesize of output 7 [2022-07-12 11:09:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 11:09:12,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:12,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094179717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:12,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:12,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 22 [2022-07-12 11:09:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891027719] [2022-07-12 11:09:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:12,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:09:12,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:09:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:09:12,918 INFO L87 Difference]: Start difference. First operand 156 states and 193 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-12 11:09:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:13,015 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2022-07-12 11:09:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:09:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 138 [2022-07-12 11:09:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:13,018 INFO L225 Difference]: With dead ends: 313 [2022-07-12 11:09:13,018 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 11:09:13,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:09:13,019 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 25 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:13,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1049 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-07-12 11:09:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 11:09:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2022-07-12 11:09:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 105 states have internal predecessors, (116), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-07-12 11:09:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2022-07-12 11:09:13,026 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 138 [2022-07-12 11:09:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:13,027 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2022-07-12 11:09:13,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-12 11:09:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2022-07-12 11:09:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 11:09:13,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:13,028 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:13,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 11:09:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:13,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -484295599, now seen corresponding path program 1 times [2022-07-12 11:09:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269453504] [2022-07-12 11:09:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:09:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:09:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:09:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:09:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:09:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 11:09:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269453504] [2022-07-12 11:09:13,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269453504] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942159248] [2022-07-12 11:09:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:13,685 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) [2022-07-12 11:09:13,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:09:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 11:09:14,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 11:09:14,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:14,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942159248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:14,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:14,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-07-12 11:09:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053048839] [2022-07-12 11:09:14,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:14,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:09:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:09:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:09:14,136 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-12 11:09:14,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:14,220 INFO L93 Difference]: Finished difference Result 278 states and 340 transitions. [2022-07-12 11:09:14,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:09:14,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 139 [2022-07-12 11:09:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:14,221 INFO L225 Difference]: With dead ends: 278 [2022-07-12 11:09:14,221 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 11:09:14,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:09:14,223 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:14,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 859 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:09:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 11:09:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-12 11:09:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.1346153846153846) internal successors, (118), 108 states have internal predecessors, (118), 44 states have call successors, (44), 17 states have call predecessors, (44), 19 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2022-07-12 11:09:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 209 transitions. [2022-07-12 11:09:14,233 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 209 transitions. Word has length 139 [2022-07-12 11:09:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:14,233 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 209 transitions. [2022-07-12 11:09:14,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-12 11:09:14,234 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 209 transitions. [2022-07-12 11:09:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 11:09:14,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:14,237 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:14,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:14,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1344725155, now seen corresponding path program 1 times [2022-07-12 11:09:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:14,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620492680] [2022-07-12 11:09:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:09:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:09:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:09:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:09:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:09:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:09:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 11:09:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:14,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620492680] [2022-07-12 11:09:14,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620492680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:14,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515501110] [2022-07-12 11:09:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:14,787 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) [2022-07-12 11:09:14,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:09:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:09:15,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 11:09:15,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:15,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515501110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:15,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:15,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 11:09:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569497575] [2022-07-12 11:09:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:15,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:09:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:09:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:09:15,222 INFO L87 Difference]: Start difference. First operand 168 states and 209 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-12 11:09:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:15,343 INFO L93 Difference]: Finished difference Result 321 states and 402 transitions. [2022-07-12 11:09:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:09:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 138 [2022-07-12 11:09:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:15,347 INFO L225 Difference]: With dead ends: 321 [2022-07-12 11:09:15,347 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 11:09:15,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:09:15,350 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 169 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:15,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 387 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:09:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 11:09:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 11:09:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 112 states have internal predecessors, (120), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (53), 44 states have call predecessors, (53), 43 states have call successors, (53) [2022-07-12 11:09:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 218 transitions. [2022-07-12 11:09:15,361 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 218 transitions. Word has length 138 [2022-07-12 11:09:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:15,361 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 218 transitions. [2022-07-12 11:09:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-12 11:09:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 218 transitions. [2022-07-12 11:09:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 11:09:15,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:15,363 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:15,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:15,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:15,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1514885783, now seen corresponding path program 1 times [2022-07-12 11:09:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008806277] [2022-07-12 11:09:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:09:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:09:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:09:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:09:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:09:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:09:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 11:09:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:15,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008806277] [2022-07-12 11:09:15,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008806277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:15,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217805205] [2022-07-12 11:09:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:15,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:15,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:15,987 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) [2022-07-12 11:09:15,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:09:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:16,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 11:09:16,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:17,188 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-12 11:09:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 11:09:22,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:22,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217805205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:22,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:22,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-12 11:09:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236150008] [2022-07-12 11:09:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:22,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:09:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:09:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-07-12 11:09:22,883 INFO L87 Difference]: Start difference. First operand 173 states and 218 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:09:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:22,996 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-07-12 11:09:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:09:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 144 [2022-07-12 11:09:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:22,998 INFO L225 Difference]: With dead ends: 338 [2022-07-12 11:09:22,998 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:09:22,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2022-07-12 11:09:22,999 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 5 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:22,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 871 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 231 Unchecked, 0.0s Time] [2022-07-12 11:09:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:09:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-12 11:09:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 113 states have internal predecessors, (122), 45 states have call successors, (45), 18 states have call predecessors, (45), 20 states have return successors, (53), 44 states have call predecessors, (53), 43 states have call successors, (53) [2022-07-12 11:09:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 220 transitions. [2022-07-12 11:09:23,006 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 220 transitions. Word has length 144 [2022-07-12 11:09:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:23,006 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 220 transitions. [2022-07-12 11:09:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:09:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 220 transitions. [2022-07-12 11:09:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:09:23,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:23,007 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:23,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 11:09:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:23,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1222683155, now seen corresponding path program 1 times [2022-07-12 11:09:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:23,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750703418] [2022-07-12 11:09:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:09:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:09:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:09:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:09:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:09:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:09:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:09:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 11:09:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:26,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750703418] [2022-07-12 11:09:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750703418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-07-12 11:09:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233419488] [2022-07-12 11:09:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 11:09:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 11:09:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:09:26,608 INFO L87 Difference]: Start difference. First operand 175 states and 220 transitions. Second operand has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-07-12 11:09:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:32,026 INFO L93 Difference]: Finished difference Result 268 states and 362 transitions. [2022-07-12 11:09:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 11:09:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) Word has length 149 [2022-07-12 11:09:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:32,029 INFO L225 Difference]: With dead ends: 268 [2022-07-12 11:09:32,029 INFO L226 Difference]: Without dead ends: 254 [2022-07-12 11:09:32,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=320, Invalid=2986, Unknown=0, NotChecked=0, Total=3306 [2022-07-12 11:09:32,031 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 268 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:32,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1295 Invalid, 3783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 11:09:32,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-12 11:09:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 197. [2022-07-12 11:09:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 130 states have internal predecessors, (140), 49 states have call successors, (49), 18 states have call predecessors, (49), 23 states have return successors, (66), 49 states have call predecessors, (66), 47 states have call successors, (66) [2022-07-12 11:09:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 255 transitions. [2022-07-12 11:09:32,042 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 255 transitions. Word has length 149 [2022-07-12 11:09:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:32,043 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 255 transitions. [2022-07-12 11:09:32,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-07-12 11:09:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 255 transitions. [2022-07-12 11:09:32,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:09:32,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:32,045 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:32,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 11:09:32,045 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:32,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash 829656145, now seen corresponding path program 1 times [2022-07-12 11:09:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:32,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385348866] [2022-07-12 11:09:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:09:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:09:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:09:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:09:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:09:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:09:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:09:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 11:09:32,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:32,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385348866] [2022-07-12 11:09:32,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385348866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:32,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:32,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:09:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337067656] [2022-07-12 11:09:32,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:32,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:09:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:09:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:09:32,410 INFO L87 Difference]: Start difference. First operand 197 states and 255 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:09:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:32,728 INFO L93 Difference]: Finished difference Result 361 states and 459 transitions. [2022-07-12 11:09:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:09:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2022-07-12 11:09:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:32,729 INFO L225 Difference]: With dead ends: 361 [2022-07-12 11:09:32,730 INFO L226 Difference]: Without dead ends: 206 [2022-07-12 11:09:32,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:09:32,730 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 116 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:32,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 456 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:09:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-12 11:09:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2022-07-12 11:09:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 120 states have internal predecessors, (128), 48 states have call successors, (48), 17 states have call predecessors, (48), 21 states have return successors, (57), 48 states have call predecessors, (57), 46 states have call successors, (57) [2022-07-12 11:09:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2022-07-12 11:09:32,743 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 149 [2022-07-12 11:09:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:32,744 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2022-07-12 11:09:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:09:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2022-07-12 11:09:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 11:09:32,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:32,745 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 11:09:32,746 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1154155911, now seen corresponding path program 1 times [2022-07-12 11:09:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:32,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622345789] [2022-07-12 11:09:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:09:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:09:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:09:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:09:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:09:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:09:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 11:09:33,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:33,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622345789] [2022-07-12 11:09:33,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622345789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:33,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:33,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 11:09:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12629687] [2022-07-12 11:09:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:09:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:09:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:09:33,223 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 11:09:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:34,374 INFO L93 Difference]: Finished difference Result 246 states and 319 transitions. [2022-07-12 11:09:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 11:09:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 150 [2022-07-12 11:09:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:34,376 INFO L225 Difference]: With dead ends: 246 [2022-07-12 11:09:34,376 INFO L226 Difference]: Without dead ends: 232 [2022-07-12 11:09:34,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 11:09:34,377 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 155 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:34,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1050 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:09:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-12 11:09:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 201. [2022-07-12 11:09:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.112) internal successors, (139), 130 states have internal predecessors, (139), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (64), 55 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-12 11:09:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 257 transitions. [2022-07-12 11:09:34,392 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 257 transitions. Word has length 150 [2022-07-12 11:09:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:34,392 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 257 transitions. [2022-07-12 11:09:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 11:09:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 257 transitions. [2022-07-12 11:09:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 11:09:34,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:34,394 INFO L195 NwaCegarLoop]: 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 11:09:34,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash 539994885, now seen corresponding path program 1 times [2022-07-12 11:09:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:34,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112978742] [2022-07-12 11:09:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:09:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:09:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:09:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:09:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:09:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:09:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:09:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:09:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:09:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:09:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:09:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:09:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:09:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:09:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:09:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:09:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 11:09:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112978742] [2022-07-12 11:09:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112978742] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473159698] [2022-07-12 11:09:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:34,946 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) [2022-07-12 11:09:34,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:09:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-12 11:09:35,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 11:09:35,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:35,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473159698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:35,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:35,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2022-07-12 11:09:35,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640937225] [2022-07-12 11:09:35,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:35,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:09:35,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:35,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:09:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:09:35,469 INFO L87 Difference]: Start difference. First operand 201 states and 257 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-12 11:09:35,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:35,592 INFO L93 Difference]: Finished difference Result 402 states and 517 transitions. [2022-07-12 11:09:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:09:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 161 [2022-07-12 11:09:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:35,593 INFO L225 Difference]: With dead ends: 402 [2022-07-12 11:09:35,594 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 11:09:35,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:09:35,595 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 19 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:35,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 773 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:09:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 11:09:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-12 11:09:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 127 states have (on average 1.110236220472441) internal successors, (141), 134 states have internal predecessors, (141), 54 states have call successors, (54), 17 states have call predecessors, (54), 23 states have return successors, (66), 55 states have call predecessors, (66), 52 states have call successors, (66) [2022-07-12 11:09:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 261 transitions. [2022-07-12 11:09:35,605 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 261 transitions. Word has length 161 [2022-07-12 11:09:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:35,606 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 261 transitions. [2022-07-12 11:09:35,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-12 11:09:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 261 transitions. [2022-07-12 11:09:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 11:09:35,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:35,607 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:35,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:35,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1216251191, now seen corresponding path program 1 times [2022-07-12 11:09:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782119272] [2022-07-12 11:09:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:35,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:09:35,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307559161] [2022-07-12 11:09:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:35,866 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) [2022-07-12 11:09:35,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:09:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:36,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 11:09:36,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 11:09:36,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:09:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-12 11:09:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782119272] [2022-07-12 11:09:36,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:09:36,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307559161] [2022-07-12 11:09:36,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307559161] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:09:36,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:09:36,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2022-07-12 11:09:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324140018] [2022-07-12 11:09:36,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:09:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:09:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:09:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:09:36,701 INFO L87 Difference]: Start difference. First operand 205 states and 261 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-12 11:09:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:36,836 INFO L93 Difference]: Finished difference Result 398 states and 507 transitions. [2022-07-12 11:09:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:09:36,837 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 167 [2022-07-12 11:09:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:36,838 INFO L225 Difference]: With dead ends: 398 [2022-07-12 11:09:36,838 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 11:09:36,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:09:36,839 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 5 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:36,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1694 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:09:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 11:09:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2022-07-12 11:09:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.088) internal successors, (136), 130 states have internal predecessors, (136), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (64), 55 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-12 11:09:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 254 transitions. [2022-07-12 11:09:36,849 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 254 transitions. Word has length 167 [2022-07-12 11:09:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:36,849 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 254 transitions. [2022-07-12 11:09:36,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-12 11:09:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 254 transitions. [2022-07-12 11:09:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 11:09:36,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:36,851 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:36,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:37,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:37,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -382620781, now seen corresponding path program 1 times [2022-07-12 11:09:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:37,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668925271] [2022-07-12 11:09:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:37,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:09:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353122937] [2022-07-12 11:09:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:37,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:37,110 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) [2022-07-12 11:09:37,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:09:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:37,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 205 conjunts are in the unsatisfiable core [2022-07-12 11:09:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:37,700 INFO L356 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2022-07-12 11:09:37,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 55 treesize of output 54 [2022-07-12 11:09:37,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-12 11:09:38,243 INFO L356 Elim1Store]: treesize reduction 114, result has 27.4 percent of original size [2022-07-12 11:09:38,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 238 treesize of output 257 [2022-07-12 11:09:38,473 INFO L390 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 11 treesize of output 7 [2022-07-12 11:09:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:38,904 INFO L356 Elim1Store]: treesize reduction 664, result has 22.1 percent of original size [2022-07-12 11:09:38,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 430 treesize of output 572 [2022-07-12 11:09:40,761 INFO L390 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 91 treesize of output 71 [2022-07-12 11:09:40,791 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:09:40,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 76 treesize of output 138 [2022-07-12 11:09:41,812 INFO L356 Elim1Store]: treesize reduction 114, result has 27.4 percent of original size [2022-07-12 11:09:41,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 238 treesize of output 257 [2022-07-12 11:09:41,826 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:09:41,826 INFO L390 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 [2022-07-12 11:09:42,591 INFO L356 Elim1Store]: treesize reduction 550, result has 28.5 percent of original size [2022-07-12 11:09:42,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 46 case distinctions, treesize of input 321 treesize of output 503 [2022-07-12 11:09:42,632 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-07-12 11:09:42,633 INFO L390 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 427 treesize of output 427 [2022-07-12 11:09:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:44,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:44,636 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:09:44,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 128 [2022-07-12 11:09:44,725 INFO L356 Elim1Store]: treesize reduction 8, result has 92.9 percent of original size [2022-07-12 11:09:44,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 138 treesize of output 230 [2022-07-12 11:09:44,737 INFO L390 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 103 treesize of output 88 [2022-07-12 11:09:44,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 120 treesize of output 94 [2022-07-12 11:09:46,057 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29|) 0))) (and (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6|) 0) .cse0) (< (+ .cse0 1) |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29|) (not (= |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29| |v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6|))))) is different from true [2022-07-12 11:09:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 1 not checked. [2022-07-12 11:09:48,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:09:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668925271] [2022-07-12 11:09:49,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:09:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353122937] [2022-07-12 11:09:49,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353122937] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:09:49,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:09:49,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2022-07-12 11:09:49,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448583994] [2022-07-12 11:09:49,320 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:09:49,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 11:09:49,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 11:09:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1656, Unknown=88, NotChecked=84, Total=1980 [2022-07-12 11:09:49,321 INFO L87 Difference]: Start difference. First operand 201 states and 254 transitions. Second operand has 39 states, 33 states have (on average 2.696969696969697) internal successors, (89), 34 states have internal predecessors, (89), 18 states have call successors, (27), 6 states have call predecessors, (27), 12 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-12 11:09:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:56,153 INFO L93 Difference]: Finished difference Result 314 states and 398 transitions. [2022-07-12 11:09:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 11:09:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 2.696969696969697) internal successors, (89), 34 states have internal predecessors, (89), 18 states have call successors, (27), 6 states have call predecessors, (27), 12 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) Word has length 161 [2022-07-12 11:09:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:56,155 INFO L225 Difference]: With dead ends: 314 [2022-07-12 11:09:56,155 INFO L226 Difference]: Without dead ends: 297 [2022-07-12 11:09:56,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=196, Invalid=2166, Unknown=92, NotChecked=96, Total=2550 [2022-07-12 11:09:56,156 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 54 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2279 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:56,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1677 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 328 Invalid, 0 Unknown, 2279 Unchecked, 0.3s Time] [2022-07-12 11:09:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-12 11:09:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 288. [2022-07-12 11:09:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 180 states have (on average 1.0833333333333333) internal successors, (195), 185 states have internal predecessors, (195), 75 states have call successors, (75), 27 states have call predecessors, (75), 32 states have return successors, (98), 77 states have call predecessors, (98), 73 states have call successors, (98) [2022-07-12 11:09:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 368 transitions. [2022-07-12 11:09:56,170 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 368 transitions. Word has length 161 [2022-07-12 11:09:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:56,171 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 368 transitions. [2022-07-12 11:09:56,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 2.696969696969697) internal successors, (89), 34 states have internal predecessors, (89), 18 states have call successors, (27), 6 states have call predecessors, (27), 12 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-12 11:09:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 368 transitions. [2022-07-12 11:09:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 11:09:56,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:56,173 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:56,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:09:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 11:09:56,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1557762011, now seen corresponding path program 1 times [2022-07-12 11:09:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:56,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121832141] [2022-07-12 11:09:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:56,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:09:56,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864631424] [2022-07-12 11:09:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:56,447 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) [2022-07-12 11:09:56,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:09:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:56,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:09:56,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-12 11:09:56,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:09:56,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:09:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121832141] [2022-07-12 11:09:56,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:09:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864631424] [2022-07-12 11:09:56,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864631424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:09:56,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:09:56,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:09:56,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893366320] [2022-07-12 11:09:56,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:09:56,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:09:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:09:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:09:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:09:56,918 INFO L87 Difference]: Start difference. First operand 288 states and 368 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 11:09:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:09:56,954 INFO L93 Difference]: Finished difference Result 466 states and 603 transitions. [2022-07-12 11:09:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:09:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 167 [2022-07-12 11:09:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:09:56,956 INFO L225 Difference]: With dead ends: 466 [2022-07-12 11:09:56,956 INFO L226 Difference]: Without dead ends: 249 [2022-07-12 11:09:56,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:09:56,957 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:09:56,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 926 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:09:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-12 11:09:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-07-12 11:09:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 154 states have (on average 1.0649350649350648) internal successors, (164), 158 states have internal predecessors, (164), 65 states have call successors, (65), 27 states have call predecessors, (65), 29 states have return successors, (76), 64 states have call predecessors, (76), 63 states have call successors, (76) [2022-07-12 11:09:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 305 transitions. [2022-07-12 11:09:56,970 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 305 transitions. Word has length 167 [2022-07-12 11:09:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:09:56,971 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 305 transitions. [2022-07-12 11:09:56,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 11:09:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 305 transitions. [2022-07-12 11:09:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 11:09:56,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:09:56,972 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:09:56,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 11:09:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 11:09:57,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:09:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:09:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash -708152249, now seen corresponding path program 1 times [2022-07-12 11:09:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:09:57,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957630809] [2022-07-12 11:09:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:09:57,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:09:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964191199] [2022-07-12 11:09:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:09:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:09:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:09:57,233 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) [2022-07-12 11:09:57,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:09:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:09:57,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 169 conjunts are in the unsatisfiable core [2022-07-12 11:09:57,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:09:57,806 INFO L356 Elim1Store]: treesize reduction 113, result has 15.0 percent of original size [2022-07-12 11:09:57,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 140 treesize of output 141 [2022-07-12 11:09:57,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:09:58,273 INFO L356 Elim1Store]: treesize reduction 124, result has 21.0 percent of original size [2022-07-12 11:09:58,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 637 treesize of output 634 [2022-07-12 11:09:58,560 INFO L390 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 11 treesize of output 7 [2022-07-12 11:09:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:58,851 INFO L356 Elim1Store]: treesize reduction 428, result has 21.6 percent of original size [2022-07-12 11:09:58,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 23 case distinctions, treesize of input 266 treesize of output 344 [2022-07-12 11:09:59,631 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2643 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2643))) is different from true [2022-07-12 11:09:59,735 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2644 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2644))) is different from true [2022-07-12 11:09:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:59,892 INFO L390 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 9 treesize of output 11 [2022-07-12 11:09:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:09:59,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 50 [2022-07-12 11:09:59,970 INFO L356 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-07-12 11:09:59,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 93 [2022-07-12 11:10:32,445 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-12 11:10:32,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-12 11:10:32,450 INFO L390 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 16 treesize of output 12 [2022-07-12 11:11:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 24 trivial. 6 not checked. [2022-07-12 11:11:06,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:11:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:11:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957630809] [2022-07-12 11:11:09,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:11:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964191199] [2022-07-12 11:11:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964191199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:11:09,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:11:09,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2022-07-12 11:11:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583455173] [2022-07-12 11:11:09,671 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:11:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 11:11:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:11:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 11:11:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1601, Unknown=67, NotChecked=166, Total=1980 [2022-07-12 11:11:09,672 INFO L87 Difference]: Start difference. First operand 249 states and 305 transitions. Second operand has 39 states, 35 states have (on average 2.857142857142857) internal successors, (100), 34 states have internal predecessors, (100), 18 states have call successors, (27), 9 states have call predecessors, (27), 14 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-12 11:12:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:11,977 INFO L93 Difference]: Finished difference Result 338 states and 408 transitions. [2022-07-12 11:12:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 11:12:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 2.857142857142857) internal successors, (100), 34 states have internal predecessors, (100), 18 states have call successors, (27), 9 states have call predecessors, (27), 14 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) Word has length 162 [2022-07-12 11:12:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:11,979 INFO L225 Difference]: With dead ends: 338 [2022-07-12 11:12:11,979 INFO L226 Difference]: Without dead ends: 318 [2022-07-12 11:12:11,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 132.3s TimeCoverageRelationStatistics Valid=342, Invalid=4225, Unknown=133, NotChecked=270, Total=4970 [2022-07-12 11:12:11,981 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 93 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2534 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:11,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1151 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 526 Invalid, 0 Unknown, 2534 Unchecked, 0.4s Time] [2022-07-12 11:12:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-12 11:12:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 304. [2022-07-12 11:12:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 191 states have (on average 1.057591623036649) internal successors, (202), 195 states have internal predecessors, (202), 75 states have call successors, (75), 33 states have call predecessors, (75), 37 states have return successors, (90), 76 states have call predecessors, (90), 73 states have call successors, (90) [2022-07-12 11:12:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 367 transitions. [2022-07-12 11:12:11,996 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 367 transitions. Word has length 162 [2022-07-12 11:12:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:11,996 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 367 transitions. [2022-07-12 11:12:11,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 2.857142857142857) internal successors, (100), 34 states have internal predecessors, (100), 18 states have call successors, (27), 9 states have call predecessors, (27), 14 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-12 11:12:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 367 transitions. [2022-07-12 11:12:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 11:12:11,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:11,998 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:12,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 11:12:12,232 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1012559470, now seen corresponding path program 1 times [2022-07-12 11:12:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:12,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011200992] [2022-07-12 11:12:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:12,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:12,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806887169] [2022-07-12 11:12:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:12,278 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) [2022-07-12 11:12:12,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:12:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:12,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:12:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 11:12:12,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011200992] [2022-07-12 11:12:12,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806887169] [2022-07-12 11:12:12,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806887169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:12,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:12,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:12:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059065480] [2022-07-12 11:12:12,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:12:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:12:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:12:12,767 INFO L87 Difference]: Start difference. First operand 304 states and 367 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 11:12:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:12,799 INFO L93 Difference]: Finished difference Result 458 states and 550 transitions. [2022-07-12 11:12:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:12:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 167 [2022-07-12 11:12:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:12,802 INFO L225 Difference]: With dead ends: 458 [2022-07-12 11:12:12,802 INFO L226 Difference]: Without dead ends: 260 [2022-07-12 11:12:12,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:12:12,803 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:12,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 903 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-12 11:12:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-07-12 11:12:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 169 states have internal predecessors, (172), 62 states have call successors, (62), 31 states have call predecessors, (62), 32 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2022-07-12 11:12:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 300 transitions. [2022-07-12 11:12:12,816 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 300 transitions. Word has length 167 [2022-07-12 11:12:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 300 transitions. [2022-07-12 11:12:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 11:12:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 300 transitions. [2022-07-12 11:12:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:12:12,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:12,818 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:12,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:13,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 11:12:13,036 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash -932993755, now seen corresponding path program 1 times [2022-07-12 11:12:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:13,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288819869] [2022-07-12 11:12:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:13,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:13,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57387215] [2022-07-12 11:12:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:13,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:13,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:13,079 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) [2022-07-12 11:12:13,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:12:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:13,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 183 conjunts are in the unsatisfiable core [2022-07-12 11:12:13,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:13,743 INFO L356 Elim1Store]: treesize reduction 113, result has 15.0 percent of original size [2022-07-12 11:12:13,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 86 treesize of output 89 [2022-07-12 11:12:13,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:12:14,185 INFO L356 Elim1Store]: treesize reduction 124, result has 21.0 percent of original size [2022-07-12 11:12:14,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 153 treesize of output 164 [2022-07-12 11:12:14,440 INFO L390 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 11 treesize of output 7 [2022-07-12 11:12:14,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:14,735 INFO L356 Elim1Store]: treesize reduction 424, result has 22.3 percent of original size [2022-07-12 11:12:14,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 23 case distinctions, treesize of input 853 treesize of output 925 [2022-07-12 11:12:15,636 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3134 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3134))) is different from true [2022-07-12 11:12:15,738 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3135 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3135) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 11:12:15,881 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:12:15,884 INFO L390 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 [2022-07-12 11:12:15,891 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 11:12:15,891 INFO L390 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 24 treesize of output 23 [2022-07-12 11:12:16,070 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-12 11:12:16,071 INFO L390 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-07-12 11:12:16,079 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 11:12:16,079 INFO L390 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 24 treesize of output 23 [2022-07-12 11:12:16,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:16,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:16,231 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-12 11:12:16,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 56 [2022-07-12 11:12:16,270 INFO L356 Elim1Store]: treesize reduction 13, result has 68.3 percent of original size [2022-07-12 11:12:16,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 61 [2022-07-12 11:12:53,202 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-12 11:12:53,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-12 11:12:53,207 INFO L390 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 16 treesize of output 12 [2022-07-12 11:13:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 48 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 6 not checked. [2022-07-12 11:13:28,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:13:30,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:13:30,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288819869] [2022-07-12 11:13:30,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:13:30,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57387215] [2022-07-12 11:13:30,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57387215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:13:30,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:13:30,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-07-12 11:13:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631283587] [2022-07-12 11:13:30,720 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:13:30,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 11:13:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:13:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 11:13:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1755, Unknown=87, NotChecked=174, Total=2162 [2022-07-12 11:13:30,723 INFO L87 Difference]: Start difference. First operand 260 states and 300 transitions. Second operand has 41 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 36 states have internal predecessors, (102), 19 states have call successors, (28), 9 states have call predecessors, (28), 13 states have return successors, (27), 18 states have call predecessors, (27), 18 states have call successors, (27)