./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_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 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:22:51,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:22:51,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:22:51,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:22:51,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:22:51,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:22:51,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:22:51,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:22:51,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:22:51,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:22:51,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:22:51,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:22:51,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:22:51,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:22:51,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:22:51,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:22:51,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:22:51,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:22:51,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:22:51,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:22:51,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:22:51,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:22:51,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:22:51,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:22:51,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:22:51,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:22:51,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:22:51,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:22:51,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:22:51,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:22:51,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:22:51,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:22:51,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:22:51,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:22:51,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:22:51,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:22:51,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:22:51,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:22:51,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:22:51,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:22:51,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:22:51,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:22:51,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:22:51,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:22:51,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:22:51,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:22:51,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:22:51,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:22:51,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:22:51,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:22:51,484 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:22:51,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:22:51,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:22:51,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:22:51,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:22:51,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:22:51,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:22:51,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:22:51,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:22:51,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:22:51,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:22:51,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:22:51,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:22:51,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:22:51,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:22:51,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:22:51,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:22:51,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:22:51,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2021-12-16 03:22:51,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:22:51,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:22:51,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:22:51,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:22:51,753 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:22:51,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-16 03:22:51,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ad2aae3/7e29d6ae413740a6887e3d062c75ab69/FLAG3618f3a28 [2021-12-16 03:22:52,461 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:22:52,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-16 03:22:52,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ad2aae3/7e29d6ae413740a6887e3d062c75ab69/FLAG3618f3a28 [2021-12-16 03:22:52,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ad2aae3/7e29d6ae413740a6887e3d062c75ab69 [2021-12-16 03:22:52,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:22:52,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:22:52,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:22:52,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:22:52,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:22:52,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:22:52" (1/1) ... [2021-12-16 03:22:52,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330a4efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:52, skipping insertion in model container [2021-12-16 03:22:52,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:22:52" (1/1) ... [2021-12-16 03:22:52,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:22:52,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:22:53,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-12-16 03:22:53,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-12-16 03:22:53,720 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:22:53,799 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,803 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,804 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,804 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,822 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:53,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,093 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:22:54,095 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:22:54,095 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:22:54,100 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:22:54,103 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:22:54,104 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:22:54,105 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:22:54,106 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:22:54,106 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:22:54,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:22:54,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:22:54,333 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:22:54,359 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-12-16 03:22:54,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-12-16 03:22:54,396 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:22:54,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,469 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:22:54,470 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:22:54,470 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:22:54,471 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:22:54,473 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:22:54,473 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:22:54,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:22:54,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:22:54,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:22:54,475 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:22:54,507 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,508 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:54,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:22:54,754 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:22:54,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54 WrapperNode [2021-12-16 03:22:54,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:22:54,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:22:54,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:22:54,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:22:54,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:54,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:54,922 INFO L137 Inliner]: procedures = 689, calls = 1531, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 667 [2021-12-16 03:22:54,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:22:54,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:22:54,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:22:54,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:22:54,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:54,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:54,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:54,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:55,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:55,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:55,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:55,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:22:55,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:22:55,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:22:55,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:22:55,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (1/1) ... [2021-12-16 03:22:55,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:22:55,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:55,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:22:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:22:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-16 03:22:55,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-16 03:22:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:22:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-16 03:22:55,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-16 03:22:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:22:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:22:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:22:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:22:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:22:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:22:55,124 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:22:55,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:22:55,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:22:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:22:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:22:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-16 03:22:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-16 03:22:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:22:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:22:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:22:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:22:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:22:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:22:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:22:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:22:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:22:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-16 03:22:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-16 03:22:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-16 03:22:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-16 03:22:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:22:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:22:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:22:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:22:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:22:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:22:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-16 03:22:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-16 03:22:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:22:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:22:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:22:55,409 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:22:55,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:22:56,143 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:22:56,153 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:22:56,154 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 03:22:56,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:22:56 BoogieIcfgContainer [2021-12-16 03:22:56,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:22:56,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:22:56,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:22:56,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:22:56,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:22:52" (1/3) ... [2021-12-16 03:22:56,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4296ab52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:22:56, skipping insertion in model container [2021-12-16 03:22:56,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:54" (2/3) ... [2021-12-16 03:22:56,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4296ab52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:22:56, skipping insertion in model container [2021-12-16 03:22:56,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:22:56" (3/3) ... [2021-12-16 03:22:56,166 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2021-12-16 03:22:56,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:22:56,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:22:56,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:22:56,231 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:22:56,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:22:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-16 03:22:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 03:22:56,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:56,264 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-16 03:22:56,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1923135121, now seen corresponding path program 1 times [2021-12-16 03:22:56,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:56,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084668915] [2021-12-16 03:22:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:56,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:22:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:22:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:22:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:22:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:22:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:22:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:22:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 03:22:57,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084668915] [2021-12-16 03:22:57,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084668915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:57,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:57,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:22:57,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464958368] [2021-12-16 03:22:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:57,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:22:57,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:22:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:22:57,142 INFO L87 Difference]: Start difference. First operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:22:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:57,718 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2021-12-16 03:22:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:22:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2021-12-16 03:22:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:57,730 INFO L225 Difference]: With dead ends: 399 [2021-12-16 03:22:57,731 INFO L226 Difference]: Without dead ends: 234 [2021-12-16 03:22:57,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:22:57,738 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 131 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:57,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 356 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:22:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-16 03:22:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-16 03:22:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 03:22:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-12-16 03:22:57,792 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 107 [2021-12-16 03:22:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:57,793 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-12-16 03:22:57,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:22:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-12-16 03:22:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 03:22:57,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:57,801 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-16 03:22:57,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:22:57,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1898390481, now seen corresponding path program 1 times [2021-12-16 03:22:57,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094083383] [2021-12-16 03:22:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:57,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:22:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:22:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:22:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:22:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:22:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:22:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:22:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 03:22:58,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094083383] [2021-12-16 03:22:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094083383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:58,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:58,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:22:58,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115217307] [2021-12-16 03:22:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:58,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:22:58,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:22:58,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:22:58,263 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-16 03:22:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:58,975 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2021-12-16 03:22:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2021-12-16 03:22:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:58,979 INFO L225 Difference]: With dead ends: 358 [2021-12-16 03:22:58,980 INFO L226 Difference]: Without dead ends: 234 [2021-12-16 03:22:58,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:22:58,982 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 288 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:58,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 580 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 03:22:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-16 03:22:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-16 03:22:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 03:22:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-12-16 03:22:59,002 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 107 [2021-12-16 03:22:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:59,003 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-12-16 03:22:59,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-16 03:22:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2021-12-16 03:22:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 03:22:59,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:59,007 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:22:59,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 413511437, now seen corresponding path program 1 times [2021-12-16 03:22:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310897951] [2021-12-16 03:22:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:59,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:22:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:22:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:22:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:22:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:22:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:22:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:22:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-16 03:22:59,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:59,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310897951] [2021-12-16 03:22:59,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310897951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:22:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880439657] [2021-12-16 03:22:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:59,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:59,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:59,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:22:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:59,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:22:59,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-16 03:23:00,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:00,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880439657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:00,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:23:00,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-16 03:23:00,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044152493] [2021-12-16 03:23:00,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:00,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:23:00,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:23:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:23:00,205 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-16 03:23:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:00,407 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2021-12-16 03:23:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:23:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 115 [2021-12-16 03:23:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:00,411 INFO L225 Difference]: With dead ends: 309 [2021-12-16 03:23:00,411 INFO L226 Difference]: Without dead ends: 168 [2021-12-16 03:23:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:23:00,416 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:00,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1075 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-16 03:23:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-16 03:23:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-16 03:23:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2021-12-16 03:23:00,451 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 115 [2021-12-16 03:23:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:00,453 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2021-12-16 03:23:00,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-16 03:23:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2021-12-16 03:23:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:23:00,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:00,464 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-12-16 03:23:00,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:00,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:00,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash -445935835, now seen corresponding path program 1 times [2021-12-16 03:23:00,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:00,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699738968] [2021-12-16 03:23:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:00,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:00,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:00,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266284301] [2021-12-16 03:23:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:00,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:00,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:00,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:23:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:01,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:01,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 03:23:01,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:01,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699738968] [2021-12-16 03:23:01,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:01,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266284301] [2021-12-16 03:23:01,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266284301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:01,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:01,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:01,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768984510] [2021-12-16 03:23:01,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:01,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:01,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:01,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:01,449 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:23:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:01,477 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2021-12-16 03:23:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:01,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-12-16 03:23:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:01,479 INFO L225 Difference]: With dead ends: 297 [2021-12-16 03:23:01,479 INFO L226 Difference]: Without dead ends: 173 [2021-12-16 03:23:01,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:01,481 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:01,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-16 03:23:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-12-16 03:23:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 114 states have internal predecessors, (134), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-16 03:23:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-12-16 03:23:01,494 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 130 [2021-12-16 03:23:01,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:01,494 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-12-16 03:23:01,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:23:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-12-16 03:23:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:23:01,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:01,496 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-12-16 03:23:01,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:01,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-16 03:23:01,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -879664921, now seen corresponding path program 1 times [2021-12-16 03:23:01,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:01,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167934397] [2021-12-16 03:23:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:01,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:01,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:01,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472532278] [2021-12-16 03:23:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:01,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:01,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:01,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:23:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:02,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:23:02,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-16 03:23:02,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:02,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167934397] [2021-12-16 03:23:02,467 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472532278] [2021-12-16 03:23:02,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472532278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:02,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:02,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:23:02,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837194752] [2021-12-16 03:23:02,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:02,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:23:02,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:23:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:23:02,469 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:23:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:02,634 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2021-12-16 03:23:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:23:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2021-12-16 03:23:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:02,637 INFO L225 Difference]: With dead ends: 299 [2021-12-16 03:23:02,637 INFO L226 Difference]: Without dead ends: 170 [2021-12-16 03:23:02,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:23:02,638 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 243 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:02,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 830 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-16 03:23:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-16 03:23:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-16 03:23:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2021-12-16 03:23:02,649 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 130 [2021-12-16 03:23:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:02,650 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2021-12-16 03:23:02,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:23:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2021-12-16 03:23:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 03:23:02,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:02,652 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:02,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:02,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:02,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:02,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 391202648, now seen corresponding path program 1 times [2021-12-16 03:23:02,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:02,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607679579] [2021-12-16 03:23:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:02,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:02,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:02,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223985634] [2021-12-16 03:23:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:02,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:02,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:02,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:02,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:23:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:03,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:23:03,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-16 03:23:03,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:03,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607679579] [2021-12-16 03:23:03,610 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223985634] [2021-12-16 03:23:03,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223985634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:03,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:03,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:23:03,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944541791] [2021-12-16 03:23:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:03,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:23:03,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:23:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:23:03,612 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-16 03:23:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:03,773 INFO L93 Difference]: Finished difference Result 312 states and 395 transitions. [2021-12-16 03:23:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:23:03,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 146 [2021-12-16 03:23:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:03,775 INFO L225 Difference]: With dead ends: 312 [2021-12-16 03:23:03,775 INFO L226 Difference]: Without dead ends: 170 [2021-12-16 03:23:03,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:23:03,777 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 104 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:03,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1200 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-16 03:23:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-16 03:23:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-16 03:23:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2021-12-16 03:23:03,787 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 146 [2021-12-16 03:23:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:03,788 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2021-12-16 03:23:03,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-16 03:23:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2021-12-16 03:23:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-16 03:23:03,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:03,790 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:03,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:04,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:04,007 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1071073244, now seen corresponding path program 2 times [2021-12-16 03:23:04,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:04,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236646478] [2021-12-16 03:23:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:04,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:04,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:04,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114908965] [2021-12-16 03:23:04,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:23:04,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:04,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:04,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:23:04,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:23:04,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:04,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:23:04,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-16 03:23:05,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:05,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236646478] [2021-12-16 03:23:05,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114908965] [2021-12-16 03:23:05,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114908965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:05,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:05,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:23:05,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562050048] [2021-12-16 03:23:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:23:05,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:23:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:23:05,161 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 03:23:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:05,283 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2021-12-16 03:23:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:23:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2021-12-16 03:23:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:05,285 INFO L225 Difference]: With dead ends: 277 [2021-12-16 03:23:05,285 INFO L226 Difference]: Without dead ends: 168 [2021-12-16 03:23:05,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:23:05,287 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 31 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:05,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1256 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-16 03:23:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-16 03:23:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 112 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 03:23:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2021-12-16 03:23:05,296 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 161 [2021-12-16 03:23:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:05,297 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2021-12-16 03:23:05,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 03:23:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2021-12-16 03:23:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-16 03:23:05,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:05,299 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:05,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:05,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:05,520 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash 153523288, now seen corresponding path program 1 times [2021-12-16 03:23:05,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:05,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558766488] [2021-12-16 03:23:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:05,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:05,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:05,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72784227] [2021-12-16 03:23:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:05,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:05,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:05,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:05,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:23:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:06,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:23:06,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:23:06,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:06,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558766488] [2021-12-16 03:23:06,492 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72784227] [2021-12-16 03:23:06,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72784227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:06,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:06,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:23:06,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264709390] [2021-12-16 03:23:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:23:06,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:23:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:06,494 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:06,717 INFO L93 Difference]: Finished difference Result 310 states and 389 transitions. [2021-12-16 03:23:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:23:06,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-16 03:23:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:06,719 INFO L225 Difference]: With dead ends: 310 [2021-12-16 03:23:06,719 INFO L226 Difference]: Without dead ends: 186 [2021-12-16 03:23:06,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:23:06,720 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 21 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:06,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 903 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:23:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-16 03:23:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-12-16 03:23:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 115 states have (on average 1.182608695652174) internal successors, (136), 116 states have internal predecessors, (136), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 03:23:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2021-12-16 03:23:06,727 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 191 [2021-12-16 03:23:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:06,728 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2021-12-16 03:23:06,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2021-12-16 03:23:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-16 03:23:06,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:06,730 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:06,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:06,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1805051498, now seen corresponding path program 1 times [2021-12-16 03:23:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:06,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365569380] [2021-12-16 03:23:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:06,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:07,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461592856] [2021-12-16 03:23:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:07,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:07,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:07,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:07,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:23:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:07,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:07,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:23:07,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:07,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:07,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365569380] [2021-12-16 03:23:07,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:07,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461592856] [2021-12-16 03:23:07,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461592856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:07,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:07,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:07,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226491132] [2021-12-16 03:23:07,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:07,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:07,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:07,799 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:07,837 INFO L93 Difference]: Finished difference Result 304 states and 379 transitions. [2021-12-16 03:23:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:07,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-16 03:23:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:07,840 INFO L225 Difference]: With dead ends: 304 [2021-12-16 03:23:07,840 INFO L226 Difference]: Without dead ends: 176 [2021-12-16 03:23:07,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:07,841 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:07,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-16 03:23:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2021-12-16 03:23:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 03:23:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2021-12-16 03:23:07,852 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 191 [2021-12-16 03:23:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:07,852 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2021-12-16 03:23:07,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2021-12-16 03:23:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-16 03:23:07,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:07,855 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:07,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:08,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:08,084 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash 610784852, now seen corresponding path program 1 times [2021-12-16 03:23:08,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278713931] [2021-12-16 03:23:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:08,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:08,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095238605] [2021-12-16 03:23:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:08,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:08,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:08,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:23:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:08,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-16 03:23:08,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:09,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-16 03:23:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:23:09,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:09,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:09,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278713931] [2021-12-16 03:23:09,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:09,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095238605] [2021-12-16 03:23:09,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095238605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:09,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:09,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:23:09,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157943831] [2021-12-16 03:23:09,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:09,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:23:09,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:09,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:23:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:23:09,178 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-16 03:23:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:09,511 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2021-12-16 03:23:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:23:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 191 [2021-12-16 03:23:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:09,514 INFO L225 Difference]: With dead ends: 329 [2021-12-16 03:23:09,514 INFO L226 Difference]: Without dead ends: 197 [2021-12-16 03:23:09,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:23:09,515 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 119 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:09,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1349 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:23:09,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-16 03:23:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2021-12-16 03:23:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.186046511627907) internal successors, (153), 130 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-16 03:23:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2021-12-16 03:23:09,529 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 191 [2021-12-16 03:23:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:09,530 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2021-12-16 03:23:09,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-16 03:23:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2021-12-16 03:23:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-16 03:23:09,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:09,533 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:09,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:09,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 03:23:09,743 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -841170410, now seen corresponding path program 1 times [2021-12-16 03:23:09,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:09,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704593685] [2021-12-16 03:23:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:09,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:09,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:09,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465666242] [2021-12-16 03:23:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:09,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:09,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:09,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:23:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:10,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 03:23:10,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:23:10,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:10,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704593685] [2021-12-16 03:23:10,566 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:10,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465666242] [2021-12-16 03:23:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465666242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:10,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:23:10,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081024336] [2021-12-16 03:23:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:23:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:23:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:10,568 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:10,610 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2021-12-16 03:23:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:23:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-16 03:23:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:10,612 INFO L225 Difference]: With dead ends: 346 [2021-12-16 03:23:10,612 INFO L226 Difference]: Without dead ends: 203 [2021-12-16 03:23:10,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:10,613 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 9 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:10,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 824 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-16 03:23:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2021-12-16 03:23:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1870503597122302) internal successors, (165), 140 states have internal predecessors, (165), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-16 03:23:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2021-12-16 03:23:10,623 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 191 [2021-12-16 03:23:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:10,624 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2021-12-16 03:23:10,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2021-12-16 03:23:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-16 03:23:10,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:10,626 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:10,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:10,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:10,842 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:10,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2030586518, now seen corresponding path program 1 times [2021-12-16 03:23:10,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:10,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581950068] [2021-12-16 03:23:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:10,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:10,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:10,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260758282] [2021-12-16 03:23:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:10,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:10,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:10,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:10,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 03:23:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:11,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:11,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:23:11,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:11,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581950068] [2021-12-16 03:23:11,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:11,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260758282] [2021-12-16 03:23:11,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260758282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:11,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:11,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:11,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090685438] [2021-12-16 03:23:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:11,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:11,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:11,692 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:11,724 INFO L93 Difference]: Finished difference Result 346 states and 434 transitions. [2021-12-16 03:23:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-16 03:23:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:11,728 INFO L225 Difference]: With dead ends: 346 [2021-12-16 03:23:11,728 INFO L226 Difference]: Without dead ends: 193 [2021-12-16 03:23:11,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:11,729 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:11,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-16 03:23:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2021-12-16 03:23:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.16793893129771) internal successors, (153), 132 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-16 03:23:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2021-12-16 03:23:11,739 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 191 [2021-12-16 03:23:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2021-12-16 03:23:11,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2021-12-16 03:23:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-16 03:23:11,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:11,742 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:11,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:11,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 03:23:11,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 955866556, now seen corresponding path program 1 times [2021-12-16 03:23:11,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196862353] [2021-12-16 03:23:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:11,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:12,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:12,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279534522] [2021-12-16 03:23:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:12,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:12,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:12,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 03:23:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:23:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:23:12,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:12,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196862353] [2021-12-16 03:23:12,853 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279534522] [2021-12-16 03:23:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279534522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:12,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:12,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:23:12,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037607651] [2021-12-16 03:23:12,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:12,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:23:12,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:23:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:12,856 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:13,014 INFO L93 Difference]: Finished difference Result 334 states and 421 transitions. [2021-12-16 03:23:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:23:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2021-12-16 03:23:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:13,016 INFO L225 Difference]: With dead ends: 334 [2021-12-16 03:23:13,016 INFO L226 Difference]: Without dead ends: 189 [2021-12-16 03:23:13,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:23:13,017 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:13,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 755 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-16 03:23:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-16 03:23:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 132 states have internal predecessors, (152), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-16 03:23:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2021-12-16 03:23:13,027 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 193 [2021-12-16 03:23:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:13,027 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2021-12-16 03:23:13,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:23:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2021-12-16 03:23:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-16 03:23:13,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:13,030 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:13,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:13,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 03:23:13,249 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -100864646, now seen corresponding path program 1 times [2021-12-16 03:23:13,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:13,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638243773] [2021-12-16 03:23:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:13,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:13,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:13,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234377117] [2021-12-16 03:23:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:13,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:13,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:13,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 03:23:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:13,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-16 03:23:13,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:15,541 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-16 03:23:15,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2021-12-16 03:23:15,549 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-16 03:23:15,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-12-16 03:23:15,554 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-16 03:23:15,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-16 03:23:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:23:15,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:16,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638243773] [2021-12-16 03:23:16,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:16,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234377117] [2021-12-16 03:23:16,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234377117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:23:16,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:23:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-12-16 03:23:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335235967] [2021-12-16 03:23:16,675 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:16,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 03:23:16,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 03:23:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-12-16 03:23:16,677 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-16 03:23:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:24,914 INFO L93 Difference]: Finished difference Result 427 states and 543 transitions. [2021-12-16 03:23:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 03:23:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 193 [2021-12-16 03:23:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:24,916 INFO L225 Difference]: With dead ends: 427 [2021-12-16 03:23:24,916 INFO L226 Difference]: Without dead ends: 294 [2021-12-16 03:23:24,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=354, Invalid=3184, Unknown=2, NotChecked=0, Total=3540 [2021-12-16 03:23:24,918 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 258 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:24,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1389 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2928 Invalid, 0 Unknown, 290 Unchecked, 2.5s Time] [2021-12-16 03:23:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-16 03:23:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 214. [2021-12-16 03:23:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 152 states have internal predecessors, (172), 43 states have call successors, (43), 18 states have call predecessors, (43), 21 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2021-12-16 03:23:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2021-12-16 03:23:24,934 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 193 [2021-12-16 03:23:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:24,935 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2021-12-16 03:23:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-16 03:23:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2021-12-16 03:23:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-16 03:23:24,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:24,937 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:24,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:25,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 03:23:25,151 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -348469826, now seen corresponding path program 1 times [2021-12-16 03:23:25,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:25,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361888811] [2021-12-16 03:23:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:25,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:25,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:25,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231101109] [2021-12-16 03:23:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:25,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:25,220 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:25,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 03:23:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:25,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 202 conjunts are in the unsatisfiable core [2021-12-16 03:23:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:25,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:23:26,499 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-16 03:23:26,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-16 03:23:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:26,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:23:26,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:26,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:23:29,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:29,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-16 03:23:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:29,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:23:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:29,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:23:33,911 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2066 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2066))) (exists ((v_ArrVal_2065 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2065))) (exists ((v_ArrVal_2064 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2064)))) is different from true [2021-12-16 03:23:34,450 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2070 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2069 Int) (v_ArrVal_2067 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2070)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2067)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2069))))) is different from true [2021-12-16 03:23:38,830 WARN L860 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_2070 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2069 Int) (v_ArrVal_2067 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2070)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2067)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2069)))))) is different from true [2021-12-16 03:23:40,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:23:40,194 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-12-16 03:23:40,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2021-12-16 03:23:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 139 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 8 not checked. [2021-12-16 03:23:40,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:42,887 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8| Int) (|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_8| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_8| 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8|) .cse3)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8|) .cse3)) (.cse1 (+ |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset| 80))) (or (not (= .cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) .cse1))) (and (= .cse0 0) (= .cse2 0)) (not (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_8|) (+ |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_8| 8)) (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset| 56)))) (not (= .cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) .cse1))))))) is different from false [2021-12-16 03:23:42,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361888811] [2021-12-16 03:23:42,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231101109] [2021-12-16 03:23:42,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231101109] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:23:42,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:23:42,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-16 03:23:42,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177677324] [2021-12-16 03:23:42,938 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:42,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-16 03:23:42,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-16 03:23:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1474, Unknown=50, NotChecked=324, Total=1980 [2021-12-16 03:23:42,940 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 35 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 30 states have internal predecessors, (113), 13 states have call successors, (28), 8 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 13 states have call successors, (26)