./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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-?-6c24879 [2022-07-12 10:51:20,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:51:20,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:51:20,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:51:20,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:51:20,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:51:20,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:51:20,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:51:20,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:51:20,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:51:20,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:51:20,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:51:20,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:51:20,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:51:20,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:51:20,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:51:20,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:51:20,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:51:20,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:51:20,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:51:20,825 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:51:20,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:51:20,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:51:20,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:51:20,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:51:20,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:51:20,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:51:20,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:51:20,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:51:20,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:51:20,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:51:20,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:51:20,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:51:20,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:51:20,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:51:20,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:51:20,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:51:20,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:51:20,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:51:20,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:51:20,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:51:20,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:51:20,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:51:20,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:51:20,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:51:20,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:51:20,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:51:20,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:51:20,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:51:20,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:51:20,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:51:20,886 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:51:20,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:51:20,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:51:20,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:51:20,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:51:20,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:51:20,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:51:20,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:51:20,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:51:20,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:51:20,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:51:20,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:51:20,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:51:20,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:51:20,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:51:20,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:51:20,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:51:20,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:51:20,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:51:20,890 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:51:20,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:51:20,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:51:20,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2022-07-12 10:51:21,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:51:21,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:51:21,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:51:21,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:51:21,090 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:51:21,091 INFO L432 ainManager$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 [2022-07-12 10:51:21,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c383c7/f8654feaa69e4ac09aa911758842e70d/FLAGabe3faac0 [2022-07-12 10:51:21,712 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:51:21,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2022-07-12 10:51:21,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c383c7/f8654feaa69e4ac09aa911758842e70d/FLAGabe3faac0 [2022-07-12 10:51:22,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c383c7/f8654feaa69e4ac09aa911758842e70d [2022-07-12 10:51:22,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:51:22,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:51:22,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:51:22,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:51:22,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:51:22,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:22" (1/1) ... [2022-07-12 10:51:22,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228e25e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:22, skipping insertion in model container [2022-07-12 10:51:22,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:22" (1/1) ... [2022-07-12 10:51:22,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:51:22,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:51:22,415 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] [2022-07-12 10:51:22,418 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] [2022-07-12 10:51:22,858 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:51:22,909 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,925 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,925 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,928 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,117 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:51:23,118 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:51:23,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:51:23,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:51:23,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:51:23,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:51:23,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:51:23,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:51:23,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:51:23,122 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:51:23,195 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:51:23,301 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:51:23,310 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] [2022-07-12 10:51:23,313 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] [2022-07-12 10:51:23,337 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:51:23,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,365 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,365 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,369 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,370 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,370 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,395 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:51:23,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:51:23,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:51:23,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:51:23,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:51:23,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:51:23,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:51:23,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:51:23,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:51:23,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:51:23,442 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,458 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:51:23,617 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:51:23,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23 WrapperNode [2022-07-12 10:51:23,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:51:23,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:51:23,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:51:23,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:51:23,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,773 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 895 [2022-07-12 10:51:23,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:51:23,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:51:23,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:51:23,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:51:23,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:51:23,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:51:23,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:51:23,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:51:23,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:51:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:23,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:51:23,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:51:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:51:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:51:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:51:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:51:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:51:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 10:51:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 10:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:51:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:51:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:51:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:51:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:51:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:51:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:51:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:51:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:51:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:51:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:51:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:51:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:51:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:51:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 10:51:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 10:51:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:51:23,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:51:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-12 10:51:23,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-12 10:51:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:51:23,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:51:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:51:23,973 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:51:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-12 10:51:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-12 10:51:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:51:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-12 10:51:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-12 10:51:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:51:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:51:23,975 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:51:23,975 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:51:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:51:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:51:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-12 10:51:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-12 10:51:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:51:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:51:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:51:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:51:24,254 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:51:24,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:51:24,948 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:51:24,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:51:24,963 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:51:24,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:51:24 BoogieIcfgContainer [2022-07-12 10:51:24,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:51:24,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:51:24,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:51:24,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:51:24,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:51:22" (1/3) ... [2022-07-12 10:51:24,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580524a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:51:24, skipping insertion in model container [2022-07-12 10:51:24,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (2/3) ... [2022-07-12 10:51:24,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580524a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:51:24, skipping insertion in model container [2022-07-12 10:51:24,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:51:24" (3/3) ... [2022-07-12 10:51:24,973 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2022-07-12 10:51:24,984 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:51:24,984 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:51:25,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:51:25,050 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@3e0a9ebb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ae6c4e1 [2022-07-12 10:51:25,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:51:25,058 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) [2022-07-12 10:51:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:51:25,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:25,072 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] [2022-07-12 10:51:25,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2022-07-12 10:51:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333931212] [2022-07-12 10:51:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:51:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:51:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:51:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:51:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:51:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:51:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:51:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:51:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:51:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:51:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:51:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:51:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:51:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:51:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:51:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:51:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:51:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:51:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:51:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:51:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:51:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-12 10:51:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333931212] [2022-07-12 10:51:25,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333931212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:25,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:25,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:51:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619697500] [2022-07-12 10:51:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:51:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:51:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:51:25,802 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) [2022-07-12 10:51:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:26,421 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2022-07-12 10:51:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:51:26,423 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 [2022-07-12 10:51:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:26,437 INFO L225 Difference]: With dead ends: 615 [2022-07-12 10:51:26,441 INFO L226 Difference]: Without dead ends: 319 [2022-07-12 10:51:26,447 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 [2022-07-12 10:51:26,449 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 205 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:26,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 523 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:51:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-12 10:51:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2022-07-12 10:51:26,501 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) [2022-07-12 10:51:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2022-07-12 10:51:26,507 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2022-07-12 10:51:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:26,507 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2022-07-12 10:51:26,508 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) [2022-07-12 10:51:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2022-07-12 10:51:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:51:26,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:26,518 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] [2022-07-12 10:51:26,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:51:26,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2022-07-12 10:51:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:26,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100282752] [2022-07-12 10:51:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:26,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:51:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:51:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:51:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:51:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:51:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:51:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:51:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:51:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:51:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 10:51:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:51:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:51:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:51:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:51:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:51:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:51:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:51:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:51:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:51:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:51:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:51:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 10:51:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:26,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100282752] [2022-07-12 10:51:26,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100282752] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:51:26,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807319465] [2022-07-12 10:51:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:26,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:26,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:26,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:26,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:51:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:51:27,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 10:51:27,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:27,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807319465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:27,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:51:27,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 10:51:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324648220] [2022-07-12 10:51:27,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:27,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:51:27,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:51:27,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:51:27,357 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) [2022-07-12 10:51:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:27,748 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2022-07-12 10:51:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:51:27,749 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 [2022-07-12 10:51:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:27,751 INFO L225 Difference]: With dead ends: 562 [2022-07-12 10:51:27,752 INFO L226 Difference]: Without dead ends: 295 [2022-07-12 10:51:27,753 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 [2022-07-12 10:51:27,754 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:27,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1111 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:51:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-12 10:51:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-12 10:51:27,778 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) [2022-07-12 10:51:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2022-07-12 10:51:27,781 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2022-07-12 10:51:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:27,781 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2022-07-12 10:51:27,782 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) [2022-07-12 10:51:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2022-07-12 10:51:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:51:27,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:27,784 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] [2022-07-12 10:51:27,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:27,999 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 [2022-07-12 10:51:28,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2022-07-12 10:51:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99428832] [2022-07-12 10:51:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:28,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109876016] [2022-07-12 10:51:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:28,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:28,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:51:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:28,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:51:28,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-12 10:51:28,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99428832] [2022-07-12 10:51:28,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109876016] [2022-07-12 10:51:28,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109876016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:28,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:28,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:51:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036686762] [2022-07-12 10:51:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:51:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:51:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:51:28,461 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) [2022-07-12 10:51:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:28,493 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2022-07-12 10:51:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:51:28,494 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 [2022-07-12 10:51:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:28,497 INFO L225 Difference]: With dead ends: 569 [2022-07-12 10:51:28,497 INFO L226 Difference]: Without dead ends: 300 [2022-07-12 10:51:28,498 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 [2022-07-12 10:51:28,500 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 [2022-07-12 10:51:28,501 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] [2022-07-12 10:51:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-12 10:51:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2022-07-12 10:51:28,536 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) [2022-07-12 10:51:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2022-07-12 10:51:28,538 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2022-07-12 10:51:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:28,538 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2022-07-12 10:51:28,539 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) [2022-07-12 10:51:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2022-07-12 10:51:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:51:28,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:28,540 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] [2022-07-12 10:51:28,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:28,760 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 [2022-07-12 10:51:28,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2022-07-12 10:51:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:28,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171896623] [2022-07-12 10:51:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:28,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732509105] [2022-07-12 10:51:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:28,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:51:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:29,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:51:29,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 10:51:29,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:29,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:29,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171896623] [2022-07-12 10:51:29,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:29,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732509105] [2022-07-12 10:51:29,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732509105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:29,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:29,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:51:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443968937] [2022-07-12 10:51:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:29,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:51:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:29,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:51:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:51:29,292 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) [2022-07-12 10:51:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:29,775 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2022-07-12 10:51:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:51:29,775 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 [2022-07-12 10:51:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:29,777 INFO L225 Difference]: With dead ends: 548 [2022-07-12 10:51:29,777 INFO L226 Difference]: Without dead ends: 297 [2022-07-12 10:51:29,778 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 [2022-07-12 10:51:29,779 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:29,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1320 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:51:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-12 10:51:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-07-12 10:51:29,790 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) [2022-07-12 10:51:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2022-07-12 10:51:29,792 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2022-07-12 10:51:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:29,792 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2022-07-12 10:51:29,793 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) [2022-07-12 10:51:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2022-07-12 10:51:29,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-12 10:51:29,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:29,794 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] [2022-07-12 10:51:29,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:30,003 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 [2022-07-12 10:51:30,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2022-07-12 10:51:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:30,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70659471] [2022-07-12 10:51:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:30,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:30,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813066557] [2022-07-12 10:51:30,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:51:30,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:30,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:30,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:30,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:51:30,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:51:30,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:51:30,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 10:51:30,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-12 10:51:30,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:30,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:30,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70659471] [2022-07-12 10:51:30,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813066557] [2022-07-12 10:51:30,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813066557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:30,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:30,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:51:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611409984] [2022-07-12 10:51:30,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:30,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:51:30,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:51:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:51:30,627 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) [2022-07-12 10:51:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:31,204 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2022-07-12 10:51:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:51:31,204 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 [2022-07-12 10:51:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:31,206 INFO L225 Difference]: With dead ends: 554 [2022-07-12 10:51:31,206 INFO L226 Difference]: Without dead ends: 309 [2022-07-12 10:51:31,207 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 [2022-07-12 10:51:31,208 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:31,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1900 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:51:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-12 10:51:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-07-12 10:51:31,220 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) [2022-07-12 10:51:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2022-07-12 10:51:31,222 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2022-07-12 10:51:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2022-07-12 10:51:31,223 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) [2022-07-12 10:51:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2022-07-12 10:51:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 10:51:31,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:31,225 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] [2022-07-12 10:51:31,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:31,439 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 [2022-07-12 10:51:31,439 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2022-07-12 10:51:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:31,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083945330] [2022-07-12 10:51:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:31,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:31,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325363144] [2022-07-12 10:51:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:31,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:31,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:31,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:51:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:31,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:51:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-12 10:51:31,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:31,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083945330] [2022-07-12 10:51:31,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:31,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325363144] [2022-07-12 10:51:31,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325363144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:31,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:31,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:51:31,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132644218] [2022-07-12 10:51:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:32,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:51:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:51:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:51:32,025 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) [2022-07-12 10:51:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:32,203 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2022-07-12 10:51:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:51:32,204 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 [2022-07-12 10:51:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:32,206 INFO L225 Difference]: With dead ends: 698 [2022-07-12 10:51:32,206 INFO L226 Difference]: Without dead ends: 438 [2022-07-12 10:51:32,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:51:32,208 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:32,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2485 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:51:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-12 10:51:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2022-07-12 10:51:32,222 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) [2022-07-12 10:51:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2022-07-12 10:51:32,223 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2022-07-12 10:51:32,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:32,224 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2022-07-12 10:51:32,224 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) [2022-07-12 10:51:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2022-07-12 10:51:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 10:51:32,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:32,226 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] [2022-07-12 10:51:32,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:32,437 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 [2022-07-12 10:51:32,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2022-07-12 10:51:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:32,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632049696] [2022-07-12 10:51:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:32,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:32,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511184752] [2022-07-12 10:51:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:32,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:32,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:51:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:32,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 10:51:32,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 10:51:32,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:32,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632049696] [2022-07-12 10:51:32,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511184752] [2022-07-12 10:51:32,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511184752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:32,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:32,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:51:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107174185] [2022-07-12 10:51:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:51:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:51:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:51:32,957 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) [2022-07-12 10:51:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:33,068 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2022-07-12 10:51:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:51:33,071 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 [2022-07-12 10:51:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:33,073 INFO L225 Difference]: With dead ends: 575 [2022-07-12 10:51:33,073 INFO L226 Difference]: Without dead ends: 309 [2022-07-12 10:51:33,074 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 [2022-07-12 10:51:33,075 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 [2022-07-12 10:51:33,075 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] [2022-07-12 10:51:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-12 10:51:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-07-12 10:51:33,087 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) [2022-07-12 10:51:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2022-07-12 10:51:33,089 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2022-07-12 10:51:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:33,089 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2022-07-12 10:51:33,089 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) [2022-07-12 10:51:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2022-07-12 10:51:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 10:51:33,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:33,092 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] [2022-07-12 10:51:33,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:33,312 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 [2022-07-12 10:51:33,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2022-07-12 10:51:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452471314] [2022-07-12 10:51:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:33,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:33,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866856451] [2022-07-12 10:51:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:33,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:33,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:33,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:51:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:33,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:51:33,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-12 10:51:33,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452471314] [2022-07-12 10:51:33,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866856451] [2022-07-12 10:51:33,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866856451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:33,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:33,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:51:33,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832731875] [2022-07-12 10:51:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:51:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:51:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:51:33,870 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) [2022-07-12 10:51:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:34,062 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2022-07-12 10:51:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:51:34,062 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 [2022-07-12 10:51:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:34,065 INFO L225 Difference]: With dead ends: 711 [2022-07-12 10:51:34,065 INFO L226 Difference]: Without dead ends: 451 [2022-07-12 10:51:34,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:51:34,067 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 [2022-07-12 10:51:34,067 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] [2022-07-12 10:51:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-07-12 10:51:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2022-07-12 10:51:34,082 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) [2022-07-12 10:51:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2022-07-12 10:51:34,084 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2022-07-12 10:51:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:34,084 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2022-07-12 10:51:34,084 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) [2022-07-12 10:51:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2022-07-12 10:51:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 10:51:34,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:34,086 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] [2022-07-12 10:51:34,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:34,299 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 [2022-07-12 10:51:34,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2022-07-12 10:51:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:34,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598262258] [2022-07-12 10:51:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:34,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:34,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750088664] [2022-07-12 10:51:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:34,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:34,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:51:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:34,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:51:34,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-12 10:51:34,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:34,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598262258] [2022-07-12 10:51:34,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750088664] [2022-07-12 10:51:34,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750088664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:34,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:34,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:51:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18580429] [2022-07-12 10:51:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:51:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:51:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:51:34,854 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) [2022-07-12 10:51:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:35,046 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2022-07-12 10:51:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:51:35,047 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 [2022-07-12 10:51:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:35,049 INFO L225 Difference]: With dead ends: 591 [2022-07-12 10:51:35,049 INFO L226 Difference]: Without dead ends: 312 [2022-07-12 10:51:35,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:51:35,051 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:35,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1650 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:51:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-12 10:51:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-07-12 10:51:35,067 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) [2022-07-12 10:51:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2022-07-12 10:51:35,069 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2022-07-12 10:51:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:35,070 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2022-07-12 10:51:35,070 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) [2022-07-12 10:51:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2022-07-12 10:51:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 10:51:35,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:35,072 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] [2022-07-12 10:51:35,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:35,287 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 [2022-07-12 10:51:35,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2022-07-12 10:51:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:35,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352883341] [2022-07-12 10:51:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:35,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:35,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343480183] [2022-07-12 10:51:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:35,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:35,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:51:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 10:51:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:35,957 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 [2022-07-12 10:51:35,962 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 [2022-07-12 10:51:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-07-12 10:51:36,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:51:36,529 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:51:36,529 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 [2022-07-12 10:51:36,538 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 10:51:36,538 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 [2022-07-12 10:51:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-12 10:51:36,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:36,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352883341] [2022-07-12 10:51:36,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:36,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343480183] [2022-07-12 10:51:36,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343480183] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:51:36,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:51:36,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2022-07-12 10:51:36,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207318834] [2022-07-12 10:51:36,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:51:36,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:51:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:51:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:51:36,568 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) [2022-07-12 10:51:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:37,945 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2022-07-12 10:51:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:51:37,945 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 [2022-07-12 10:51:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:37,947 INFO L225 Difference]: With dead ends: 615 [2022-07-12 10:51:37,947 INFO L226 Difference]: Without dead ends: 325 [2022-07-12 10:51:37,948 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 [2022-07-12 10:51:37,949 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 5509 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1869 Invalid, 0 Unknown, 119 Unchecked, 1.1s Time] [2022-07-12 10:51:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-12 10:51:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2022-07-12 10:51:37,965 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) [2022-07-12 10:51:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2022-07-12 10:51:37,967 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2022-07-12 10:51:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:37,967 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2022-07-12 10:51:37,968 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) [2022-07-12 10:51:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2022-07-12 10:51:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 10:51:37,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:37,970 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] [2022-07-12 10:51:37,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:38,183 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 [2022-07-12 10:51:38,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2022-07-12 10:51:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315012604] [2022-07-12 10:51:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:38,236 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:38,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091688616] [2022-07-12 10:51:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:38,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:38,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:38,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:51:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:38,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:51:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 10:51:38,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:38,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315012604] [2022-07-12 10:51:38,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:38,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091688616] [2022-07-12 10:51:38,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091688616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:38,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:38,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:51:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882499016] [2022-07-12 10:51:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:38,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:51:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:51:38,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:51:38,731 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) [2022-07-12 10:51:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:38,950 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2022-07-12 10:51:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:51:38,951 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 [2022-07-12 10:51:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:38,953 INFO L225 Difference]: With dead ends: 609 [2022-07-12 10:51:38,953 INFO L226 Difference]: Without dead ends: 320 [2022-07-12 10:51:38,954 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 [2022-07-12 10:51:38,954 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-12 10:51:38,954 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] [2022-07-12 10:51:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-12 10:51:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2022-07-12 10:51:38,969 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) [2022-07-12 10:51:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2022-07-12 10:51:38,971 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2022-07-12 10:51:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:38,971 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2022-07-12 10:51:38,972 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) [2022-07-12 10:51:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2022-07-12 10:51:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 10:51:38,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:38,973 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] [2022-07-12 10:51:39,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:39,187 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 [2022-07-12 10:51:39,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:39,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2022-07-12 10:51:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:39,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368135052] [2022-07-12 10:51:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:39,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:39,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402193568] [2022-07-12 10:51:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:39,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:39,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:39,258 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:39,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:51:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:51:39,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:44,795 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 [2022-07-12 10:51:44,799 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 [2022-07-12 10:51:44,801 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 [2022-07-12 10:51:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-12 10:51:44,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:51:45,321 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 [2022-07-12 10:51:45,323 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-12 10:51:45,426 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 [2022-07-12 10:51:45,518 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:51:45,518 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 [2022-07-12 10:51:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-12 10:51:45,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:45,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368135052] [2022-07-12 10:51:45,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:45,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402193568] [2022-07-12 10:51:45,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402193568] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:51:45,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:51:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2022-07-12 10:51:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141636349] [2022-07-12 10:51:45,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:51:45,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:51:45,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:45,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:51:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:51:45,580 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) [2022-07-12 10:51:52,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:52,348 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2022-07-12 10:51:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:51:52,349 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 [2022-07-12 10:51:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:52,351 INFO L225 Difference]: With dead ends: 781 [2022-07-12 10:51:52,352 INFO L226 Difference]: Without dead ends: 500 [2022-07-12 10:51:52,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 10:51:52,356 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 527 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:52,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 5436 Invalid, 4675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3223 Invalid, 0 Unknown, 1286 Unchecked, 2.3s Time] [2022-07-12 10:51:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-12 10:51:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2022-07-12 10:51:52,376 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) [2022-07-12 10:51:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2022-07-12 10:51:52,379 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2022-07-12 10:51:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:52,379 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2022-07-12 10:51:52,380 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) [2022-07-12 10:51:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2022-07-12 10:51:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 10:51:52,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:52,381 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] [2022-07-12 10:51:52,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:52,595 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 [2022-07-12 10:51:52,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2022-07-12 10:51:52,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:52,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107827359] [2022-07-12 10:51:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:52,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689093944] [2022-07-12 10:51:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:52,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:52,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:52,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:51:52,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:51:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:53,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 77 conjunts are in the unsatisfiable core [2022-07-12 10:51:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:53,175 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 [2022-07-12 10:51:56,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:51:56,839 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 [2022-07-12 10:51:56,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:51:56,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2022-07-12 10:51:56,917 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 [2022-07-12 10:51:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:51:56,987 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 [2022-07-12 10:51:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:51:56,992 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 [2022-07-12 10:51:56,998 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:51:56,999 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 [2022-07-12 10:51:57,129 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 [2022-07-12 10:51:57,132 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 [2022-07-12 10:51:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 211 proven. 16 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-12 10:51:57,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:51:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:58,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107827359] [2022-07-12 10:51:58,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:58,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689093944] [2022-07-12 10:51:58,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689093944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:51:58,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:51:58,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-12 10:51:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688703057] [2022-07-12 10:51:58,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:51:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:51:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:51:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=4, NotChecked=44, Total=600 [2022-07-12 10:51:58,829 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) [2022-07-12 10:52:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:07,205 INFO L93 Difference]: Finished difference Result 766 states and 1242 transitions. [2022-07-12 10:52:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:52:07,205 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 [2022-07-12 10:52:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:07,207 INFO L225 Difference]: With dead ends: 766 [2022-07-12 10:52:07,207 INFO L226 Difference]: Without dead ends: 431 [2022-07-12 10:52:07,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=146, Invalid=1036, Unknown=12, NotChecked=66, Total=1260 [2022-07-12 10:52:07,209 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 112 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 4141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1868 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:07,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2741 Invalid, 4141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2143 Invalid, 0 Unknown, 1868 Unchecked, 1.3s Time] [2022-07-12 10:52:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-12 10:52:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2022-07-12 10:52:07,234 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) [2022-07-12 10:52:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2022-07-12 10:52:07,236 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 218 [2022-07-12 10:52:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:07,236 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2022-07-12 10:52:07,236 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) [2022-07-12 10:52:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2022-07-12 10:52:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 10:52:07,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:07,238 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] [2022-07-12 10:52:07,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:07,443 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 [2022-07-12 10:52:07,443 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash -102526788, now seen corresponding path program 1 times [2022-07-12 10:52:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:07,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043419306] [2022-07-12 10:52:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:07,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:07,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724541774] [2022-07-12 10:52:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:07,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:07,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:07,488 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) [2022-07-12 10:52:07,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:52:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:07,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 10:52:07,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:07,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043419306] [2022-07-12 10:52:07,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:52:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724541774] [2022-07-12 10:52:07,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724541774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:07,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:07,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:52:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284347456] [2022-07-12 10:52:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:07,988 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) [2022-07-12 10:52:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:08,181 INFO L93 Difference]: Finished difference Result 704 states and 1174 transitions. [2022-07-12 10:52:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:08,182 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 [2022-07-12 10:52:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:08,184 INFO L225 Difference]: With dead ends: 704 [2022-07-12 10:52:08,184 INFO L226 Difference]: Without dead ends: 387 [2022-07-12 10:52:08,186 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 [2022-07-12 10:52:08,186 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 13 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-12 10:52:08,187 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] [2022-07-12 10:52:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-12 10:52:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2022-07-12 10:52:08,206 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) [2022-07-12 10:52:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 586 transitions. [2022-07-12 10:52:08,208 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 586 transitions. Word has length 218 [2022-07-12 10:52:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 586 transitions. [2022-07-12 10:52:08,209 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) [2022-07-12 10:52:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 586 transitions. [2022-07-12 10:52:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-12 10:52:08,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:08,210 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] [2022-07-12 10:52:08,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:08,411 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 [2022-07-12 10:52:08,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -989000721, now seen corresponding path program 1 times [2022-07-12 10:52:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:08,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700149860] [2022-07-12 10:52:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:08,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:08,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:08,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384005829] [2022-07-12 10:52:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:08,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:08,478 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) [2022-07-12 10:52:08,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:52:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-12 10:52:08,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:08,991 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 [2022-07-12 10:52:09,077 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 [2022-07-12 10:52:09,096 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 [2022-07-12 10:52:09,154 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:52:09,154 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 [2022-07-12 10:52:09,178 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-12 10:52:09,178 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 [2022-07-12 10:52:09,267 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 [2022-07-12 10:52:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:09,323 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 [2022-07-12 10:52:09,333 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-12 10:52:09,334 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 [2022-07-12 10:52:51,682 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 [2022-07-12 10:53:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 3 not checked. [2022-07-12 10:53:08,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:10,659 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 [2022-07-12 10:53:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700149860] [2022-07-12 10:53:10,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384005829] [2022-07-12 10:53:10,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384005829] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:10,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:53:10,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-12 10:53:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583031628] [2022-07-12 10:53:10,661 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:53:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:53:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=566, Unknown=15, NotChecked=150, Total=812 [2022-07-12 10:53:10,662 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) [2022-07-12 10:53:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:31,542 INFO L93 Difference]: Finished difference Result 762 states and 1227 transitions. [2022-07-12 10:53:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:53:31,542 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 [2022-07-12 10:53:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:31,545 INFO L225 Difference]: With dead ends: 762 [2022-07-12 10:53:31,545 INFO L226 Difference]: Without dead ends: 463 [2022-07-12 10:53:31,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 294 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 80.6s TimeCoverageRelationStatistics Valid=151, Invalid=1309, Unknown=34, NotChecked=228, Total=1722 [2022-07-12 10:53:31,547 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 161 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2671 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 6736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3931 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:31,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2839 Invalid, 6736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2671 Invalid, 0 Unknown, 3931 Unchecked, 1.4s Time] [2022-07-12 10:53:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-12 10:53:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 429. [2022-07-12 10:53:31,572 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) [2022-07-12 10:53:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 685 transitions. [2022-07-12 10:53:31,575 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 685 transitions. Word has length 224 [2022-07-12 10:53:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:31,575 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 685 transitions. [2022-07-12 10:53:31,575 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) [2022-07-12 10:53:31,575 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 685 transitions. [2022-07-12 10:53:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-12 10:53:31,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:31,577 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] [2022-07-12 10:53:31,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:53:31,803 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 [2022-07-12 10:53:31,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 256742611, now seen corresponding path program 1 times [2022-07-12 10:53:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:31,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247828435] [2022-07-12 10:53:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:31,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:53:31,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972360176] [2022-07-12 10:53:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:31,847 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) [2022-07-12 10:53:31,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:53:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:32,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:53:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-12 10:53:32,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:53:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247828435] [2022-07-12 10:53:32,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972360176] [2022-07-12 10:53:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972360176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:32,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:53:32,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:53:32,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294525442] [2022-07-12 10:53:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:32,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:53:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:53:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:53:32,414 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) [2022-07-12 10:53:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:32,737 INFO L93 Difference]: Finished difference Result 735 states and 1213 transitions. [2022-07-12 10:53:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:53:32,737 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 [2022-07-12 10:53:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:32,740 INFO L225 Difference]: With dead ends: 735 [2022-07-12 10:53:32,740 INFO L226 Difference]: Without dead ends: 429 [2022-07-12 10:53:32,741 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 [2022-07-12 10:53:32,741 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 11 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4372 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:32,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4372 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:53:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-12 10:53:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-07-12 10:53:32,767 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) [2022-07-12 10:53:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 679 transitions. [2022-07-12 10:53:32,769 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 679 transitions. Word has length 248 [2022-07-12 10:53:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 679 transitions. [2022-07-12 10:53:32,770 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) [2022-07-12 10:53:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 679 transitions. [2022-07-12 10:53:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-12 10:53:32,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:32,772 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] [2022-07-12 10:53:32,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:53:32,979 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 [2022-07-12 10:53:32,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1214278443, now seen corresponding path program 1 times [2022-07-12 10:53:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250823401] [2022-07-12 10:53:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:33,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:53:33,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051614990] [2022-07-12 10:53:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:33,030 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) [2022-07-12 10:53:33,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:53:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:53:33,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 10:53:33,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:53:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250823401] [2022-07-12 10:53:33,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051614990] [2022-07-12 10:53:33,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051614990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:33,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:53:33,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:53:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892466328] [2022-07-12 10:53:33,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:53:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:53:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:53:33,599 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) [2022-07-12 10:53:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:33,929 INFO L93 Difference]: Finished difference Result 729 states and 1193 transitions. [2022-07-12 10:53:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:53:33,929 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 [2022-07-12 10:53:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:33,932 INFO L225 Difference]: With dead ends: 729 [2022-07-12 10:53:33,932 INFO L226 Difference]: Without dead ends: 429 [2022-07-12 10:53:33,933 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 [2022-07-12 10:53:33,934 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 11 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:33,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4366 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:53:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-12 10:53:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-07-12 10:53:33,956 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) [2022-07-12 10:53:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 676 transitions. [2022-07-12 10:53:33,958 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 676 transitions. Word has length 244 [2022-07-12 10:53:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:33,958 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 676 transitions. [2022-07-12 10:53:33,958 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) [2022-07-12 10:53:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 676 transitions. [2022-07-12 10:53:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-12 10:53:33,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:33,960 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] [2022-07-12 10:53:33,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:53:34,175 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 [2022-07-12 10:53:34,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1390442585, now seen corresponding path program 2 times [2022-07-12 10:53:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104289308] [2022-07-12 10:53:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:34,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:53:34,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107402020] [2022-07-12 10:53:34,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:53:34,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:34,219 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) [2022-07-12 10:53:34,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:53:34,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:53:34,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:53:34,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-12 10:53:34,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-12 10:53:34,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:53:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104289308] [2022-07-12 10:53:34,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:34,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107402020] [2022-07-12 10:53:34,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107402020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:34,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:53:34,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:53:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856506616] [2022-07-12 10:53:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:34,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:53:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:53:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:53:34,816 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) [2022-07-12 10:53:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:35,161 INFO L93 Difference]: Finished difference Result 723 states and 1178 transitions. [2022-07-12 10:53:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:53:35,162 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 [2022-07-12 10:53:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:35,164 INFO L225 Difference]: With dead ends: 723 [2022-07-12 10:53:35,164 INFO L226 Difference]: Without dead ends: 433 [2022-07-12 10:53:35,166 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 [2022-07-12 10:53:35,166 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 12 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:35,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4751 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:53:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-12 10:53:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2022-07-12 10:53:35,194 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) [2022-07-12 10:53:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 669 transitions. [2022-07-12 10:53:35,196 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 669 transitions. Word has length 238 [2022-07-12 10:53:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:35,196 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 669 transitions. [2022-07-12 10:53:35,196 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) [2022-07-12 10:53:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 669 transitions. [2022-07-12 10:53:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:53:35,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:35,198 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] [2022-07-12 10:53:35,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 10:53:35,419 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 [2022-07-12 10:53:35,420 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1678496715, now seen corresponding path program 1 times [2022-07-12 10:53:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:35,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613662962] [2022-07-12 10:53:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:35,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:53:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129526903] [2022-07-12 10:53:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:35,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:35,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:35,463 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) [2022-07-12 10:53:35,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:53:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:35,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 214 conjunts are in the unsatisfiable core [2022-07-12 10:53:35,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:35,991 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 [2022-07-12 10:53:36,101 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 [2022-07-12 10:53:36,106 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 [2022-07-12 10:53:36,147 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 [2022-07-12 10:53:36,249 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:53:36,249 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 [2022-07-12 10:53:36,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:36,257 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 [2022-07-12 10:53:36,304 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-12 10:53:36,304 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 [2022-07-12 10:53:36,406 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 [2022-07-12 10:53:36,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:36,498 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 [2022-07-12 10:53:36,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:36,502 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 [2022-07-12 10:53:36,508 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:53:36,509 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 [2022-07-12 10:53:39,059 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 [2022-07-12 10:53:54,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:54,162 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 32 treesize of output 25 [2022-07-12 10:53:54,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:54,166 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 [2022-07-12 10:53:56,773 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 [2022-07-12 10:53:58,785 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 [2022-07-12 10:53:58,831 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 [2022-07-12 10:53:58,835 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 [2022-07-12 10:54:01,968 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 [2022-07-12 10:54:12,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:12,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:54:12,526 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 [2022-07-12 10:54:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 194 proven. 92 refuted. 0 times theorem prover too weak. 139 trivial. 39 not checked. [2022-07-12 10:54:12,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:16,959 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 [2022-07-12 10:54:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613662962] [2022-07-12 10:54:16,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:54:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129526903] [2022-07-12 10:54:16,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129526903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:16,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:16,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-07-12 10:54:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736835405] [2022-07-12 10:54:16,961 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:16,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 10:54:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 10:54:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1443, Unknown=13, NotChecked=486, Total=2070 [2022-07-12 10:54:16,962 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) [2022-07-12 10:55:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:03,175 INFO L93 Difference]: Finished difference Result 792 states and 1256 transitions. [2022-07-12 10:55:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:55:03,175 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 [2022-07-12 10:55:03,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:03,178 INFO L225 Difference]: With dead ends: 792 [2022-07-12 10:55:03,178 INFO L226 Difference]: Without dead ends: 503 [2022-07-12 10:55:03,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 193 SyntacticMatches, 24 SemanticMatches, 62 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 84.5s TimeCoverageRelationStatistics Valid=254, Invalid=3035, Unknown=41, NotChecked=702, Total=4032 [2022-07-12 10:55:03,181 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 187 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:03,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3815 Invalid, 9485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2459 Invalid, 0 Unknown, 6898 Unchecked, 1.3s Time] [2022-07-12 10:55:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-12 10:55:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 489. [2022-07-12 10:55:03,230 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) [2022-07-12 10:55:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 749 transitions. [2022-07-12 10:55:03,232 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 749 transitions. Word has length 226 [2022-07-12 10:55:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:03,233 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 749 transitions. [2022-07-12 10:55:03,233 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) [2022-07-12 10:55:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 749 transitions. [2022-07-12 10:55:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 10:55:03,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:03,235 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] [2022-07-12 10:55:03,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-12 10:55:03,443 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 [2022-07-12 10:55:03,443 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2054268177, now seen corresponding path program 2 times [2022-07-12 10:55:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280315184] [2022-07-12 10:55:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:03,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:03,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749830670] [2022-07-12 10:55:03,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:55:03,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:03,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:03,492 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) [2022-07-12 10:55:03,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:55:04,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:55:04,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:04,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-12 10:55:04,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:05,233 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 [2022-07-12 10:55:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-12 10:55:17,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:55:18,362 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 [2022-07-12 10:55:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:18,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280315184] [2022-07-12 10:55:18,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:55:18,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749830670] [2022-07-12 10:55:18,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749830670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:18,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:55:18,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-12 10:55:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120008091] [2022-07-12 10:55:18,364 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:55:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:55:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:55:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=959, Unknown=16, NotChecked=126, Total=1190 [2022-07-12 10:55:18,366 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) [2022-07-12 10:55:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:25,392 INFO L93 Difference]: Finished difference Result 1046 states and 1870 transitions. [2022-07-12 10:55:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:55:25,393 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 [2022-07-12 10:55:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:25,397 INFO L225 Difference]: With dead ends: 1046 [2022-07-12 10:55:25,397 INFO L226 Difference]: Without dead ends: 760 [2022-07-12 10:55:25,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=232, Invalid=2504, Unknown=28, NotChecked=206, Total=2970 [2022-07-12 10:55:25,399 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 360 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 7564 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 12300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 7564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4360 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:25,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 5683 Invalid, 12300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 7564 Invalid, 0 Unknown, 4360 Unchecked, 5.9s Time] [2022-07-12 10:55:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-12 10:55:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 496. [2022-07-12 10:55:25,455 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) [2022-07-12 10:55:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 761 transitions. [2022-07-12 10:55:25,458 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 761 transitions. Word has length 228 [2022-07-12 10:55:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:25,459 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 761 transitions. [2022-07-12 10:55:25,459 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) [2022-07-12 10:55:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 761 transitions. [2022-07-12 10:55:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:55:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:25,462 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] [2022-07-12 10:55:25,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:25,672 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 [2022-07-12 10:55:25,673 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1274290955, now seen corresponding path program 2 times [2022-07-12 10:55:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:25,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078525493] [2022-07-12 10:55:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:25,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:25,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:25,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740013315] [2022-07-12 10:55:25,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:55:25,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:25,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:25,715 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) [2022-07-12 10:55:25,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:55:26,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:55:26,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-12 10:55:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:26,825 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 [2022-07-12 10:55:26,927 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 [2022-07-12 10:55:26,954 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 [2022-07-12 10:55:27,041 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:55:27,041 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 [2022-07-12 10:55:27,079 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:55:27,080 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 [2022-07-12 10:55:27,183 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 [2022-07-12 10:55:27,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:27,402 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 [2022-07-12 10:55:27,407 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:55:27,407 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 [2022-07-12 10:55:27,523 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