./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_array_list_push_back_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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:07:58,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:07:58,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:07:58,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:07:58,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:07:58,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:07:58,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:07:58,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:07:58,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:07:58,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:07:58,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:07:58,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:07:58,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:07:58,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:07:58,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:07:58,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:07:58,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:07:58,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:07:58,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:07:58,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:07:58,741 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:07:58,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:07:58,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:07:58,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:07:58,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:07:58,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:07:58,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:07:58,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:07:58,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:07:58,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:07:58,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:07:58,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:07:58,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:07:58,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:07:58,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:07:58,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:07:58,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:07:58,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:07:58,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:07:58,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:07:58,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:07:58,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:07:58,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:07:58,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:07:58,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:07:58,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:07:58,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:07:58,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:07:58,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:07:58,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:07:58,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:07:58,780 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:07:58,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:07:58,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:07:58,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:07:58,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:07:58,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:07:58,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:07:58,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:07:58,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:07:58,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:07:58,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:07:58,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:07:58,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:07:58,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:07:58,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:07:58,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:07:58,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:07:58,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:07:58,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:07:58,785 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:07:58,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:07:58,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:07:58,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2022-07-22 22:07:58,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:07:58,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:07:59,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:07:59,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:07:59,002 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:07:59,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2022-07-22 22:07:59,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/235158d89/430390f7771546cbb902f4b80b46aba2/FLAGd441ca8ad [2022-07-22 22:07:59,639 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:07:59,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2022-07-22 22:07:59,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/235158d89/430390f7771546cbb902f4b80b46aba2/FLAGd441ca8ad [2022-07-22 22:07:59,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/235158d89/430390f7771546cbb902f4b80b46aba2 [2022-07-22 22:07:59,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:07:59,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:07:59,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:07:59,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:07:59,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:07:59,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:07:59" (1/1) ... [2022-07-22 22:07:59,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff063cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:07:59, skipping insertion in model container [2022-07-22 22:07:59,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:07:59" (1/1) ... [2022-07-22 22:07:59,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:07:59,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:08:00,163 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_array_list_push_back_harness.i[4498,4511] [2022-07-22 22:08:00,169 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_array_list_push_back_harness.i[4558,4571] [2022-07-22 22:08:00,641 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:00,685 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,686 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,687 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,687 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,688 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,702 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,704 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:00,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:00,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:00,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:00,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:00,897 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:00,898 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:00,898 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:00,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:00,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:00,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:00,984 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,012 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:01,097 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:08:01,109 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_array_list_push_back_harness.i[4498,4511] [2022-07-22 22:08:01,109 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_array_list_push_back_harness.i[4558,4571] [2022-07-22 22:08:01,141 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:01,152 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,154 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,162 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,162 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,163 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,163 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,188 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:01,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:01,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:01,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:01,191 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:01,191 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:01,191 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:01,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:01,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:01,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:01,212 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,216 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:01,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:01,476 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:08:01,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01 WrapperNode [2022-07-22 22:08:01,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:08:01,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:01,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:08:01,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:08:01,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,653 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 895 [2022-07-22 22:08:01,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:01,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:08:01,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:08:01,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:08:01,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:08:01,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:08:01,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:08:01,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:08:01,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (1/1) ... [2022-07-22 22:08:01,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:08:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:01,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:08:01,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:08:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:08:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:08:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:08:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:08:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:08:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:08:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:08:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-22 22:08:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-22 22:08:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:08:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:08:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:08:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:08:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:08:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:08:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:08:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:08:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-22 22:08:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-22 22:08:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:08:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:08:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:08:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:08:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:08:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:08:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:08:01,846 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:08:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-22 22:08:01,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-22 22:08:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-22 22:08:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-22 22:08:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:08:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:08:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-22 22:08:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-22 22:08:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-22 22:08:01,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-22 22:08:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:08:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-22 22:08:01,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-22 22:08:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:08:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:08:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:08:01,849 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:08:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:08:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:08:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-22 22:08:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-22 22:08:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:08:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:08:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:08:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:08:02,157 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:08:02,159 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:08:02,929 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:08:02,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:08:02,937 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:08:02,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:02 BoogieIcfgContainer [2022-07-22 22:08:02,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:08:02,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:08:02,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:08:02,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:08:02,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:07:59" (1/3) ... [2022-07-22 22:08:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ffcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:02, skipping insertion in model container [2022-07-22 22:08:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:01" (2/3) ... [2022-07-22 22:08:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ffcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:02, skipping insertion in model container [2022-07-22 22:08:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:02" (3/3) ... [2022-07-22 22:08:02,947 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2022-07-22 22:08:02,959 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:08:02,959 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:08:03,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:08:03,020 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c3cb147, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2af82c5e [2022-07-22 22:08:03,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:08:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2022-07-22 22:08:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:08:03,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:03,047 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:03,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2022-07-22 22:08:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:03,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857101246] [2022-07-22 22:08:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:08:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:08:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:08:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:08:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:08:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:08:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 22:08:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:08:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:08:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:08:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:08:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:08:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-22 22:08:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:03,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857101246] [2022-07-22 22:08:03,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857101246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:03,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:03,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:08:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468970373] [2022-07-22 22:08:03,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:03,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:08:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:08:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:03,866 INFO L87 Difference]: Start difference. First operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:08:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:04,571 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2022-07-22 22:08:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:04,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 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 130 [2022-07-22 22:08:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:04,586 INFO L225 Difference]: With dead ends: 615 [2022-07-22 22:08:04,586 INFO L226 Difference]: Without dead ends: 319 [2022-07-22 22:08:04,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:04,596 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 205 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:04,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 523 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:08:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-22 22:08:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2022-07-22 22:08:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 171 states have internal predecessors, (207), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 22:08:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2022-07-22 22:08:04,713 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2022-07-22 22:08:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:04,713 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2022-07-22 22:08:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:08:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2022-07-22 22:08:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:08:04,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:04,718 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:08:04,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2022-07-22 22:08:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:04,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157899014] [2022-07-22 22:08:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:08:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:08:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:08:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:08:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:08:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:08:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 22:08:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:08:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:08:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:08:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:08:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:08:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-22 22:08:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:05,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157899014] [2022-07-22 22:08:05,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157899014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:05,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766362665] [2022-07-22 22:08:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:05,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:05,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:05,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:08:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:05,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:08:05,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-22 22:08:05,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:05,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766362665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:05,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:05,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:08:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404493779] [2022-07-22 22:08:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:08:05,702 INFO L87 Difference]: Start difference. First operand 293 states and 408 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 22:08:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:06,205 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2022-07-22 22:08:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2022-07-22 22:08:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:06,208 INFO L225 Difference]: With dead ends: 562 [2022-07-22 22:08:06,208 INFO L226 Difference]: Without dead ends: 295 [2022-07-22 22:08:06,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:08:06,212 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:06,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1111 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:08:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-22 22:08:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-22 22:08:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 171 states have (on average 1.2163742690058479) internal successors, (208), 173 states have internal predecessors, (208), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2022-07-22 22:08:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2022-07-22 22:08:06,235 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2022-07-22 22:08:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:06,237 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2022-07-22 22:08:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 22:08:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2022-07-22 22:08:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 22:08:06,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:06,248 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:06,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:08:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:06,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2022-07-22 22:08:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:06,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505300081] [2022-07-22 22:08:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:06,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:06,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102969019] [2022-07-22 22:08:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:06,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:06,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:06,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:08:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:06,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:08:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-22 22:08:06,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:06,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505300081] [2022-07-22 22:08:06,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102969019] [2022-07-22 22:08:06,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102969019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:06,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:06,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:08:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862480025] [2022-07-22 22:08:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:06,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:08:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:08:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:08:06,982 INFO L87 Difference]: Start difference. First operand 295 states and 428 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:08:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:07,038 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2022-07-22 22:08:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 160 [2022-07-22 22:08:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:07,041 INFO L225 Difference]: With dead ends: 569 [2022-07-22 22:08:07,041 INFO L226 Difference]: Without dead ends: 300 [2022-07-22 22:08:07,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:07,044 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1211 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 [2022-07-22 22:08:07,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:08:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-22 22:08:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2022-07-22 22:08:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2022-07-22 22:08:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2022-07-22 22:08:07,066 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2022-07-22 22:08:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:07,067 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2022-07-22 22:08:07,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:08:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2022-07-22 22:08:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 22:08:07,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:07,069 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:07,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:07,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 22:08:07,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2022-07-22 22:08:07,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:07,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560750230] [2022-07-22 22:08:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:07,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:07,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145715509] [2022-07-22 22:08:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:07,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:07,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:07,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:07,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:08:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:07,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:08:07,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 22:08:07,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560750230] [2022-07-22 22:08:07,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145715509] [2022-07-22 22:08:07,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145715509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:07,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:07,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:08:07,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557901347] [2022-07-22 22:08:07,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:07,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:08:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:08:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:08:07,907 INFO L87 Difference]: Start difference. First operand 297 states and 430 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:08:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:08,458 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2022-07-22 22:08:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:08:08,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 160 [2022-07-22 22:08:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:08,462 INFO L225 Difference]: With dead ends: 548 [2022-07-22 22:08:08,462 INFO L226 Difference]: Without dead ends: 297 [2022-07-22 22:08:08,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:08,464 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:08,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1320 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:08:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-22 22:08:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-07-22 22:08:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2022-07-22 22:08:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2022-07-22 22:08:08,484 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2022-07-22 22:08:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:08,484 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2022-07-22 22:08:08,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:08:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2022-07-22 22:08:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 22:08:08,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:08,487 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:08,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:08,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2022-07-22 22:08:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:08,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33462136] [2022-07-22 22:08:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:08,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515574841] [2022-07-22 22:08:08,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:08:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:08,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:08,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:08:09,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:08:09,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:08:09,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:08:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-22 22:08:09,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33462136] [2022-07-22 22:08:09,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515574841] [2022-07-22 22:08:09,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515574841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:09,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:09,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:08:09,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699875765] [2022-07-22 22:08:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:09,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:08:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:08:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:08:09,573 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:08:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:10,261 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2022-07-22 22:08:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:08:10,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2022-07-22 22:08:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:10,264 INFO L225 Difference]: With dead ends: 554 [2022-07-22 22:08:10,264 INFO L226 Difference]: Without dead ends: 309 [2022-07-22 22:08:10,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:08:10,266 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:10,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1900 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:08:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-22 22:08:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-07-22 22:08:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2122905027932962) internal successors, (217), 181 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2022-07-22 22:08:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2022-07-22 22:08:10,284 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2022-07-22 22:08:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:10,285 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2022-07-22 22:08:10,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:08:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2022-07-22 22:08:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 22:08:10,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:10,287 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:10,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:10,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:10,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2022-07-22 22:08:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990409484] [2022-07-22 22:08:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:10,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:10,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399600244] [2022-07-22 22:08:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:10,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:10,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:10,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:10,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:08:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:11,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:08:11,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-22 22:08:11,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:11,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990409484] [2022-07-22 22:08:11,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399600244] [2022-07-22 22:08:11,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399600244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:11,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:11,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:08:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046965408] [2022-07-22 22:08:11,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:11,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:11,253 INFO L87 Difference]: Start difference. First operand 309 states and 444 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:11,499 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2022-07-22 22:08:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:08:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-07-22 22:08:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:11,504 INFO L225 Difference]: With dead ends: 698 [2022-07-22 22:08:11,504 INFO L226 Difference]: Without dead ends: 438 [2022-07-22 22:08:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:08:11,506 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 173 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2485 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-22 22:08:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2022-07-22 22:08:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 184 states have internal predecessors, (220), 109 states have call successors, (109), 22 states have call predecessors, (109), 23 states have return successors, (124), 108 states have call predecessors, (124), 108 states have call successors, (124) [2022-07-22 22:08:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2022-07-22 22:08:11,533 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2022-07-22 22:08:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:11,534 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2022-07-22 22:08:11,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2022-07-22 22:08:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 22:08:11,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:11,537 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:11,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:11,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:11,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:11,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2022-07-22 22:08:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:11,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30229474] [2022-07-22 22:08:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:11,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:11,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:11,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59461409] [2022-07-22 22:08:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:11,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:11,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:08:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:12,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 22:08:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-22 22:08:12,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:12,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30229474] [2022-07-22 22:08:12,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:12,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59461409] [2022-07-22 22:08:12,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59461409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:12,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:12,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:08:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928580365] [2022-07-22 22:08:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:08:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:08:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:12,413 INFO L87 Difference]: Start difference. First operand 315 states and 453 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:08:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:12,574 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2022-07-22 22:08:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:12,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2022-07-22 22:08:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:12,578 INFO L225 Difference]: With dead ends: 575 [2022-07-22 22:08:12,578 INFO L226 Difference]: Without dead ends: 309 [2022-07-22 22:08:12,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:12,580 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:12,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1468 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:08:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-22 22:08:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-07-22 22:08:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2067039106145252) internal successors, (216), 181 states have internal predecessors, (216), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2022-07-22 22:08:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2022-07-22 22:08:12,606 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2022-07-22 22:08:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:12,606 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2022-07-22 22:08:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:08:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2022-07-22 22:08:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 22:08:12,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:12,610 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:12,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 22:08:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:12,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2022-07-22 22:08:12,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:12,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999257563] [2022-07-22 22:08:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:12,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:12,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782255078] [2022-07-22 22:08:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:12,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:12,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:12,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:08:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:13,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 22:08:13,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-22 22:08:13,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:13,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:13,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999257563] [2022-07-22 22:08:13,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:13,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782255078] [2022-07-22 22:08:13,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782255078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:13,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:13,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:08:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995873717] [2022-07-22 22:08:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:13,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:08:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:08:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:08:13,557 INFO L87 Difference]: Start difference. First operand 309 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:13,780 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2022-07-22 22:08:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:08:13,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-07-22 22:08:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:13,784 INFO L225 Difference]: With dead ends: 711 [2022-07-22 22:08:13,784 INFO L226 Difference]: Without dead ends: 451 [2022-07-22 22:08:13,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:08:13,788 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 177 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:13,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 3525 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:08:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-07-22 22:08:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2022-07-22 22:08:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 191 states have (on average 1.198952879581152) internal successors, (229), 193 states have internal predecessors, (229), 112 states have call successors, (112), 22 states have call predecessors, (112), 24 states have return successors, (129), 112 states have call predecessors, (129), 111 states have call successors, (129) [2022-07-22 22:08:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2022-07-22 22:08:13,850 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2022-07-22 22:08:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:13,851 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2022-07-22 22:08:13,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2022-07-22 22:08:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 22:08:13,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:13,855 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:13,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:14,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:14,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2022-07-22 22:08:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:14,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071500286] [2022-07-22 22:08:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:14,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:14,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765977366] [2022-07-22 22:08:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:14,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:14,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:14,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:14,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:08:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:14,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:08:14,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-22 22:08:14,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071500286] [2022-07-22 22:08:14,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:14,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765977366] [2022-07-22 22:08:14,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765977366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:14,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:14,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:08:14,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094832280] [2022-07-22 22:08:14,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:14,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:14,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:14,708 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:14,951 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2022-07-22 22:08:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:14,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2022-07-22 22:08:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:14,954 INFO L225 Difference]: With dead ends: 591 [2022-07-22 22:08:14,954 INFO L226 Difference]: Without dead ends: 312 [2022-07-22 22:08:14,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:08:14,956 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 170 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:14,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1650 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-22 22:08:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-07-22 22:08:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 184 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 24 states have return successors, (122), 105 states have call predecessors, (122), 105 states have call successors, (122) [2022-07-22 22:08:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2022-07-22 22:08:14,980 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2022-07-22 22:08:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:14,981 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2022-07-22 22:08:14,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:08:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2022-07-22 22:08:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 22:08:14,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:14,984 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:15,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 22:08:15,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2022-07-22 22:08:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758880505] [2022-07-22 22:08:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:15,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:15,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609751690] [2022-07-22 22:08:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:15,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:15,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:15,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:08:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 22:08:15,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:16,041 INFO L390 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 15 treesize of output 7 [2022-07-22 22:08:16,047 INFO L390 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 15 treesize of output 7 [2022-07-22 22:08:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-07-22 22:08:16,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:08:16,646 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:08:16,647 INFO L390 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 30 treesize of output 25 [2022-07-22 22:08:16,654 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-22 22:08:16,655 INFO L390 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 24 treesize of output 12 [2022-07-22 22:08:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-22 22:08:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758880505] [2022-07-22 22:08:16,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609751690] [2022-07-22 22:08:16,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609751690] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:08:16,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:08:16,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2022-07-22 22:08:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217807394] [2022-07-22 22:08:16,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:08:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:08:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:08:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:08:16,701 INFO L87 Difference]: Start difference. First operand 312 states and 445 transitions. Second operand has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2022-07-22 22:08:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:18,480 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2022-07-22 22:08:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:08:18,481 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) Word has length 216 [2022-07-22 22:08:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:18,484 INFO L225 Difference]: With dead ends: 615 [2022-07-22 22:08:18,484 INFO L226 Difference]: Without dead ends: 325 [2022-07-22 22:08:18,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-07-22 22:08:18,486 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:18,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 5509 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1869 Invalid, 0 Unknown, 119 Unchecked, 1.4s Time] [2022-07-22 22:08:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-22 22:08:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2022-07-22 22:08:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 187 states have internal predecessors, (219), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2022-07-22 22:08:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2022-07-22 22:08:18,509 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2022-07-22 22:08:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:18,509 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2022-07-22 22:08:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2022-07-22 22:08:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2022-07-22 22:08:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-22 22:08:18,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:18,511 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:18,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:18,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:08:18,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:18,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2022-07-22 22:08:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:18,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351364220] [2022-07-22 22:08:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:18,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:18,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339420605] [2022-07-22 22:08:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:18,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:18,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:18,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:08:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:08:19,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-22 22:08:19,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:19,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351364220] [2022-07-22 22:08:19,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339420605] [2022-07-22 22:08:19,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339420605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:19,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:19,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:08:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756659458] [2022-07-22 22:08:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:19,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:08:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:08:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:19,452 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:08:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:19,698 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2022-07-22 22:08:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2022-07-22 22:08:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:19,701 INFO L225 Difference]: With dead ends: 609 [2022-07-22 22:08:19,701 INFO L226 Difference]: Without dead ends: 320 [2022-07-22 22:08:19,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:08:19,703 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:19,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1569 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-22 22:08:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2022-07-22 22:08:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 188 states have internal predecessors, (220), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2022-07-22 22:08:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2022-07-22 22:08:19,728 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2022-07-22 22:08:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:19,728 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2022-07-22 22:08:19,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:08:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2022-07-22 22:08:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-22 22:08:19,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:19,730 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:19,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:08:19,955 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2022-07-22 22:08:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:19,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805488443] [2022-07-22 22:08:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:20,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:20,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454051097] [2022-07-22 22:08:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:20,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:20,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:20,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:08:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:20,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-22 22:08:20,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:27,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-22 22:08:27,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-22 22:08:27,825 INFO L390 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 18 treesize of output 10 [2022-07-22 22:08:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-22 22:08:27,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:08:28,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-22 22:08:28,480 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 22:08:28,575 INFO L390 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 27 treesize of output 15 [2022-07-22 22:08:28,703 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:08:28,704 INFO L390 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 23 treesize of output 18 [2022-07-22 22:08:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-22 22:08:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:28,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805488443] [2022-07-22 22:08:28,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:28,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454051097] [2022-07-22 22:08:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454051097] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:08:28,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:08:28,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2022-07-22 22:08:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294452102] [2022-07-22 22:08:28,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:08:28,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:08:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:08:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-07-22 22:08:28,795 INFO L87 Difference]: Start difference. First operand 316 states and 471 transitions. Second operand has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2022-07-22 22:08:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:31,891 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2022-07-22 22:08:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 22:08:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) Word has length 218 [2022-07-22 22:08:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:31,896 INFO L225 Difference]: With dead ends: 781 [2022-07-22 22:08:31,896 INFO L226 Difference]: Without dead ends: 500 [2022-07-22 22:08:31,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2022-07-22 22:08:31,898 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 527 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 4675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1286 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:31,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 5436 Invalid, 4675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3223 Invalid, 0 Unknown, 1286 Unchecked, 2.6s Time] [2022-07-22 22:08:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-22 22:08:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2022-07-22 22:08:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 216 states have (on average 1.1666666666666667) internal successors, (252), 220 states have internal predecessors, (252), 114 states have call successors, (114), 30 states have call predecessors, (114), 34 states have return successors, (177), 114 states have call predecessors, (177), 113 states have call successors, (177) [2022-07-22 22:08:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2022-07-22 22:08:31,931 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2022-07-22 22:08:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:31,932 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2022-07-22 22:08:31,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2022-07-22 22:08:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2022-07-22 22:08:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-22 22:08:31,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:31,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:31,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:08:32,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2022-07-22 22:08:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:32,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936494699] [2022-07-22 22:08:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:32,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:32,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939041740] [2022-07-22 22:08:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:32,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:32,235 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:32,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:08:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:32,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 77 conjunts are in the unsatisfiable core [2022-07-22 22:08:32,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:32,786 INFO L390 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 [2022-07-22 22:08:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:36,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:08:36,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:36,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:08:36,903 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1636 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1636))) (exists ((v_ArrVal_1635 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1635) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:08:36,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:36,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:08:36,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:36,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:08:37,003 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:08:37,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 22:08:37,103 INFO L390 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 15 treesize of output 7 [2022-07-22 22:08:37,105 INFO L390 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 15 treesize of output 7 [2022-07-22 22:08:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 211 proven. 16 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-22 22:08:37,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:08:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936494699] [2022-07-22 22:08:38,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939041740] [2022-07-22 22:08:38,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939041740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:38,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:38,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-22 22:08:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159292136] [2022-07-22 22:08:38,830 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:08:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 22:08:38,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 22:08:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=4, NotChecked=44, Total=600 [2022-07-22 22:08:38,833 INFO L87 Difference]: Start difference. First operand 365 states and 543 transitions. Second operand has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-22 22:08:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:47,713 INFO L93 Difference]: Finished difference Result 766 states and 1242 transitions. [2022-07-22 22:08:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 22:08:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 218 [2022-07-22 22:08:47,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:47,718 INFO L225 Difference]: With dead ends: 766 [2022-07-22 22:08:47,718 INFO L226 Difference]: Without dead ends: 431 [2022-07-22 22:08:47,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=146, Invalid=1036, Unknown=12, NotChecked=66, Total=1260 [2022-07-22 22:08:47,720 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 112 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1867 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:47,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2741 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2143 Invalid, 0 Unknown, 1867 Unchecked, 1.5s Time] [2022-07-22 22:08:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-22 22:08:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2022-07-22 22:08:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 236 states have (on average 1.1652542372881356) internal successors, (275), 243 states have internal predecessors, (275), 115 states have call successors, (115), 31 states have call predecessors, (115), 39 states have return successors, (230), 116 states have call predecessors, (230), 114 states have call successors, (230) [2022-07-22 22:08:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2022-07-22 22:08:47,759 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 218 [2022-07-22 22:08:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:47,759 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2022-07-22 22:08:47,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-22 22:08:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2022-07-22 22:08:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-22 22:08:47,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:47,761 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:47,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:47,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:08:47,983 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash -102526788, now seen corresponding path program 1 times [2022-07-22 22:08:47,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:47,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214758432] [2022-07-22 22:08:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:48,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943455189] [2022-07-22 22:08:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:48,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:48,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:48,048 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) [2022-07-22 22:08:48,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:08:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:08:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-22 22:08:48,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:48,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214758432] [2022-07-22 22:08:48,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943455189] [2022-07-22 22:08:48,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943455189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:48,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:48,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:08:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513635479] [2022-07-22 22:08:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:08:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:08:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:48,665 INFO L87 Difference]: Start difference. First operand 391 states and 620 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:08:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:48,905 INFO L93 Difference]: Finished difference Result 704 states and 1174 transitions. [2022-07-22 22:08:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:48,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2022-07-22 22:08:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:48,909 INFO L225 Difference]: With dead ends: 704 [2022-07-22 22:08:48,909 INFO L226 Difference]: Without dead ends: 387 [2022-07-22 22:08:48,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:48,912 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 13 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1540 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-22 22:08:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2022-07-22 22:08:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 230 states have (on average 1.1565217391304348) internal successors, (266), 236 states have internal predecessors, (266), 115 states have call successors, (115), 31 states have call predecessors, (115), 38 states have return successors, (205), 116 states have call predecessors, (205), 114 states have call successors, (205) [2022-07-22 22:08:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 586 transitions. [2022-07-22 22:08:48,941 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 586 transitions. Word has length 218 [2022-07-22 22:08:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:48,941 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 586 transitions. [2022-07-22 22:08:48,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:08:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 586 transitions. [2022-07-22 22:08:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-22 22:08:48,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:48,943 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:48,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:08:49,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -989000721, now seen corresponding path program 1 times [2022-07-22 22:08:49,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368538371] [2022-07-22 22:08:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:49,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:49,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458974376] [2022-07-22 22:08:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:49,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:49,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:49,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:49,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:08:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-22 22:08:49,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:49,885 INFO L390 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 [2022-07-22 22:08:50,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:08:50,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-22 22:08:50,102 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:08:50,102 INFO L390 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 34 treesize of output 27 [2022-07-22 22:08:50,130 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-22 22:08:50,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 22:08:50,217 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2003 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2003) |c_#memory_$Pointer$.base|)) is different from true [2022-07-22 22:08:50,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:50,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-22 22:08:50,295 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-22 22:08:50,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-07-22 22:09:32,461 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2005 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2005)))) is different from true [2022-07-22 22:09:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 3 not checked. [2022-07-22 22:09:49,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:50,651 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115| Int) (v_ArrVal_2012 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115|) 0 v_ArrVal_2012)) |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.offset|)) 0))) is different from false [2022-07-22 22:09:50,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:50,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368538371] [2022-07-22 22:09:50,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:09:50,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458974376] [2022-07-22 22:09:50,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458974376] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:50,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:50,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-22 22:09:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619185984] [2022-07-22 22:09:50,653 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:50,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 22:09:50,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 22:09:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=566, Unknown=15, NotChecked=150, Total=812 [2022-07-22 22:09:50,654 INFO L87 Difference]: Start difference. First operand 384 states and 586 transitions. Second operand has 28 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (32), 8 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2022-07-22 22:10:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:11,198 INFO L93 Difference]: Finished difference Result 762 states and 1227 transitions. [2022-07-22 22:10:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 22:10:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (32), 8 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) Word has length 224 [2022-07-22 22:10:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:11,202 INFO L225 Difference]: With dead ends: 762 [2022-07-22 22:10:11,202 INFO L226 Difference]: Without dead ends: 463 [2022-07-22 22:10:11,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 294 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 79.1s TimeCoverageRelationStatistics Valid=151, Invalid=1309, Unknown=34, NotChecked=228, Total=1722 [2022-07-22 22:10:11,205 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 161 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 6722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3931 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:11,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2820 Invalid, 6722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2655 Invalid, 0 Unknown, 3931 Unchecked, 1.6s Time] [2022-07-22 22:10:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-22 22:10:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 429. [2022-07-22 22:10:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 260 states have (on average 1.146153846153846) internal successors, (298), 268 states have internal predecessors, (298), 123 states have call successors, (123), 36 states have call predecessors, (123), 45 states have return successors, (264), 124 states have call predecessors, (264), 122 states have call successors, (264) [2022-07-22 22:10:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 685 transitions. [2022-07-22 22:10:11,243 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 685 transitions. Word has length 224 [2022-07-22 22:10:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:11,243 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 685 transitions. [2022-07-22 22:10:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (32), 8 states have call predecessors, (32), 11 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2022-07-22 22:10:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 685 transitions. [2022-07-22 22:10:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-22 22:10:11,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:11,246 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:11,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:11,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:11,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 256742611, now seen corresponding path program 1 times [2022-07-22 22:10:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:11,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005190237] [2022-07-22 22:10:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:11,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:11,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813912285] [2022-07-22 22:10:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:11,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:11,527 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:11,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:10:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:12,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-22 22:10:12,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-22 22:10:12,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:12,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005190237] [2022-07-22 22:10:12,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:12,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813912285] [2022-07-22 22:10:12,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813912285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:12,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:10:12,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 22:10:12,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681982331] [2022-07-22 22:10:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:12,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:10:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:10:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:10:12,227 INFO L87 Difference]: Start difference. First operand 429 states and 685 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:10:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:12,555 INFO L93 Difference]: Finished difference Result 735 states and 1213 transitions. [2022-07-22 22:10:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:10:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 248 [2022-07-22 22:10:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:12,558 INFO L225 Difference]: With dead ends: 735 [2022-07-22 22:10:12,558 INFO L226 Difference]: Without dead ends: 429 [2022-07-22 22:10:12,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:10:12,561 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 11 mSDsluCounter, 3956 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:12,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4365 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:10:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-22 22:10:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-07-22 22:10:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 260 states have (on average 1.146153846153846) internal successors, (298), 268 states have internal predecessors, (298), 123 states have call successors, (123), 36 states have call predecessors, (123), 45 states have return successors, (258), 124 states have call predecessors, (258), 122 states have call successors, (258) [2022-07-22 22:10:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 679 transitions. [2022-07-22 22:10:12,594 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 679 transitions. Word has length 248 [2022-07-22 22:10:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:12,595 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 679 transitions. [2022-07-22 22:10:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:10:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 679 transitions. [2022-07-22 22:10:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-22 22:10:12,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:12,597 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:12,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-22 22:10:12,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 22:10:12,812 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1214278443, now seen corresponding path program 1 times [2022-07-22 22:10:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:12,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59451010] [2022-07-22 22:10:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:12,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:12,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:12,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797827494] [2022-07-22 22:10:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:12,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:12,889 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:12,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:10:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:13,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-22 22:10:13,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-22 22:10:13,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59451010] [2022-07-22 22:10:13,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797827494] [2022-07-22 22:10:13,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797827494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:13,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:10:13,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 22:10:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980811858] [2022-07-22 22:10:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:13,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:10:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:10:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:10:13,561 INFO L87 Difference]: Start difference. First operand 429 states and 679 transitions. Second operand has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:10:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:13,961 INFO L93 Difference]: Finished difference Result 729 states and 1193 transitions. [2022-07-22 22:10:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:10:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2022-07-22 22:10:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:13,965 INFO L225 Difference]: With dead ends: 729 [2022-07-22 22:10:13,965 INFO L226 Difference]: Without dead ends: 429 [2022-07-22 22:10:13,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:10:13,967 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 11 mSDsluCounter, 3983 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:13,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4395 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:10:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-22 22:10:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-07-22 22:10:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 260 states have (on average 1.146153846153846) internal successors, (298), 268 states have internal predecessors, (298), 123 states have call successors, (123), 36 states have call predecessors, (123), 45 states have return successors, (255), 124 states have call predecessors, (255), 122 states have call successors, (255) [2022-07-22 22:10:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 676 transitions. [2022-07-22 22:10:13,999 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 676 transitions. Word has length 244 [2022-07-22 22:10:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:14,000 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 676 transitions. [2022-07-22 22:10:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:10:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 676 transitions. [2022-07-22 22:10:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-22 22:10:14,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:14,002 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:14,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:14,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:10:14,223 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1390442585, now seen corresponding path program 2 times [2022-07-22 22:10:14,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:14,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562139893] [2022-07-22 22:10:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:14,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:14,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228604908] [2022-07-22 22:10:14,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:10:14,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:14,284 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:14,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:10:14,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:10:14,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:10:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 22:10:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 22:10:14,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:14,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:14,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562139893] [2022-07-22 22:10:14,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:14,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228604908] [2022-07-22 22:10:14,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228604908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:14,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:10:14,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 22:10:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063239191] [2022-07-22 22:10:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:10:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:10:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:10:14,946 INFO L87 Difference]: Start difference. First operand 429 states and 676 transitions. Second operand has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-22 22:10:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:15,387 INFO L93 Difference]: Finished difference Result 723 states and 1178 transitions. [2022-07-22 22:10:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:10:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 238 [2022-07-22 22:10:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:15,391 INFO L225 Difference]: With dead ends: 723 [2022-07-22 22:10:15,391 INFO L226 Difference]: Without dead ends: 433 [2022-07-22 22:10:15,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:10:15,394 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 12 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:15,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4783 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:10:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-22 22:10:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2022-07-22 22:10:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 260 states have (on average 1.146153846153846) internal successors, (298), 268 states have internal predecessors, (298), 123 states have call successors, (123), 36 states have call predecessors, (123), 45 states have return successors, (248), 124 states have call predecessors, (248), 122 states have call successors, (248) [2022-07-22 22:10:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 669 transitions. [2022-07-22 22:10:15,464 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 669 transitions. Word has length 238 [2022-07-22 22:10:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:15,466 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 669 transitions. [2022-07-22 22:10:15,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-22 22:10:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 669 transitions. [2022-07-22 22:10:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 22:10:15,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:15,468 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:15,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:15,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:10:15,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1678496715, now seen corresponding path program 1 times [2022-07-22 22:10:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:15,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193084851] [2022-07-22 22:10:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:15,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:15,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710474377] [2022-07-22 22:10:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:15,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:15,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:15,746 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:15,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:10:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:16,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 214 conjunts are in the unsatisfiable core [2022-07-22 22:10:16,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:16,334 INFO L390 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 [2022-07-22 22:10:16,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:16,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:16,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-22 22:10:16,607 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:10:16,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-22 22:10:16,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:16,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:10:16,666 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-22 22:10:16,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-22 22:10:16,780 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2615 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2615) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2616 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2616) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:10:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:16,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:10:16,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:16,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-22 22:10:16,890 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:10:16,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 22:10:19,527 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2618 Int) (v_ArrVal_2619 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2618))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2619))))) is different from true [2022-07-22 22:10:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:34,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-07-22 22:10:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:34,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:10:36,895 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2621 Int) (v_ArrVal_2622 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2621)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2622))))) is different from true [2022-07-22 22:10:38,909 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2621 Int) (v_ArrVal_2622 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2621))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2622)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:10:38,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-22 22:10:38,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-07-22 22:10:41,936 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2625 Int) (v_ArrVal_2626 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2626))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2625)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-22 22:10:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:52,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:10:52,655 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2022-07-22 22:10:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 194 proven. 92 refuted. 0 times theorem prover too weak. 139 trivial. 39 not checked. [2022-07-22 22:10:52,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:10:55,174 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| Int) (v_ArrVal_2641 Int) (v_ArrVal_2642 Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127|) 0 v_ArrVal_2641)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_127|) 0 v_ArrVal_2642)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2022-07-22 22:10:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:55,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193084851] [2022-07-22 22:10:55,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:55,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710474377] [2022-07-22 22:10:55,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710474377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:55,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:10:55,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-07-22 22:10:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110623997] [2022-07-22 22:10:55,176 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:10:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 22:10:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 22:10:55,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1443, Unknown=13, NotChecked=486, Total=2070 [2022-07-22 22:10:55,178 INFO L87 Difference]: Start difference. First operand 429 states and 669 transitions. Second operand has 42 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 38 states have internal predecessors, (124), 17 states have call successors, (33), 9 states have call predecessors, (33), 16 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) [2022-07-22 22:11:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:11:39,884 INFO L93 Difference]: Finished difference Result 792 states and 1256 transitions. [2022-07-22 22:11:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-22 22:11:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 38 states have internal predecessors, (124), 17 states have call successors, (33), 9 states have call predecessors, (33), 16 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) Word has length 226 [2022-07-22 22:11:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:11:39,888 INFO L225 Difference]: With dead ends: 792 [2022-07-22 22:11:39,888 INFO L226 Difference]: Without dead ends: 503 [2022-07-22 22:11:39,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 193 SyntacticMatches, 24 SemanticMatches, 62 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 80.6s TimeCoverageRelationStatistics Valid=254, Invalid=3035, Unknown=41, NotChecked=702, Total=4032 [2022-07-22 22:11:39,891 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 187 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 9485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6898 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:11:39,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3815 Invalid, 9485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2459 Invalid, 0 Unknown, 6898 Unchecked, 1.4s Time] [2022-07-22 22:11:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-22 22:11:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 489. [2022-07-22 22:11:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 296 states have (on average 1.135135135135135) internal successors, (336), 305 states have internal predecessors, (336), 140 states have call successors, (140), 43 states have call predecessors, (140), 52 states have return successors, (273), 140 states have call predecessors, (273), 139 states have call successors, (273) [2022-07-22 22:11:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 749 transitions. [2022-07-22 22:11:39,928 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 749 transitions. Word has length 226 [2022-07-22 22:11:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:11:39,928 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 749 transitions. [2022-07-22 22:11:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 38 states have internal predecessors, (124), 17 states have call successors, (33), 9 states have call predecessors, (33), 16 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) [2022-07-22 22:11:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 749 transitions. [2022-07-22 22:11:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-22 22:11:39,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:11:39,931 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2022-07-22 22:11:39,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:11:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:11:40,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:11:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:11:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2054268177, now seen corresponding path program 2 times [2022-07-22 22:11:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:11:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838171543] [2022-07-22 22:11:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:11:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:11:40,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:11:40,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394771445] [2022-07-22 22:11:40,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:11:40,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:11:40,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:11:40,207 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:11:40,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:11:41,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:11:41,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:11:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-22 22:11:41,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:11:42,133 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2828 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2831 Int) (v_ArrVal_2827 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2831))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2828))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2827) |c_#memory_int|))) is different from true [2022-07-22 22:11:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-22 22:11:54,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:11:55,268 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2850 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133| Int) (v_ArrVal_2851 Int) (v_ArrVal_2849 (Array Int Int))) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133|) 0 v_ArrVal_2851)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133|) 0 v_ArrVal_2850)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_133| v_ArrVal_2849) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616) 0))))) is different from false [2022-07-22 22:11:55,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:11:55,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838171543] [2022-07-22 22:11:55,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:11:55,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394771445] [2022-07-22 22:11:55,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394771445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:11:55,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:11:55,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-22 22:11:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002697691] [2022-07-22 22:11:55,270 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:11:55,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:11:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:11:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:11:55,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=959, Unknown=16, NotChecked=126, Total=1190 [2022-07-22 22:11:55,272 INFO L87 Difference]: Start difference. First operand 489 states and 749 transitions. Second operand has 31 states, 28 states have (on average 3.25) internal successors, (91), 26 states have internal predecessors, (91), 11 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:12:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:03,087 INFO L93 Difference]: Finished difference Result 1046 states and 1870 transitions. [2022-07-22 22:12:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:12:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.25) internal successors, (91), 26 states have internal predecessors, (91), 11 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 228 [2022-07-22 22:12:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:03,094 INFO L225 Difference]: With dead ends: 1046 [2022-07-22 22:12:03,094 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 22:12:03,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=232, Invalid=2504, Unknown=28, NotChecked=206, Total=2970 [2022-07-22 22:12:03,097 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 363 mSDsluCounter, 5159 mSDsCounter, 0 mSdLazyCounter, 7601 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 5657 SdHoareTripleChecker+Invalid, 12336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 7601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4364 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:03,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 5657 Invalid, 12336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 7601 Invalid, 0 Unknown, 4364 Unchecked, 6.7s Time] [2022-07-22 22:12:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 22:12:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 496. [2022-07-22 22:12:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 300 states have (on average 1.1333333333333333) internal successors, (340), 309 states have internal predecessors, (340), 142 states have call successors, (142), 44 states have call predecessors, (142), 53 states have return successors, (279), 142 states have call predecessors, (279), 141 states have call successors, (279) [2022-07-22 22:12:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 761 transitions. [2022-07-22 22:12:03,144 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 761 transitions. Word has length 228 [2022-07-22 22:12:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:03,145 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 761 transitions. [2022-07-22 22:12:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.25) internal successors, (91), 26 states have internal predecessors, (91), 11 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:12:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 761 transitions. [2022-07-22 22:12:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 22:12:03,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:03,147 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:03,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:03,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:03,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1274290955, now seen corresponding path program 2 times [2022-07-22 22:12:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:03,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24569408] [2022-07-22 22:12:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:03,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:12:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993119289] [2022-07-22 22:12:03,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:12:03,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:03,441 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:12:03,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:12:04,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:12:04,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:12:04,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-22 22:12:04,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:04,627 INFO L390 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 [2022-07-22 22:12:04,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:12:04,766 INFO L390 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 [2022-07-22 22:12:04,843 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:12:04,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:12:04,884 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 22:12:04,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 22:12:05,001 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3042 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3042))) is different from true [2022-07-22 22:12:05,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:12:05,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:12:05,250 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:12:05,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 22:12:05,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3