./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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-tmp.no-commuhash-c3fed41 [2021-12-16 03:13:41,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:13:41,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:13:41,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:13:41,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:13:41,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:13:41,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:13:41,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:13:41,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:13:41,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:13:41,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:13:41,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:13:41,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:13:41,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:13:41,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:13:41,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:13:41,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:13:41,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:13:41,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:13:41,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:13:41,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:13:41,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:13:41,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:13:41,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:13:41,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:13:41,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:13:41,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:13:41,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:13:41,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:13:41,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:13:41,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:13:41,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:13:41,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:13:41,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:13:41,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:13:41,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:13:41,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:13:41,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:13:41,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:13:41,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:13:41,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:13:41,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:13:41,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:13:41,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:13:41,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:13:41,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:13:41,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:13:41,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:13:41,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:13:41,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:13:41,890 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:13:41,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:13:41,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:13:41,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:13:41,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:13:41,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:13:41,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:13:41,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:13:41,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:13:41,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:13:41,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:13:41,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:13:41,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-12-16 03:13:42,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:13:42,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:13:42,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:13:42,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:13:42,115 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:13:42,116 INFO L432 ainManager$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 [2021-12-16 03:13:42,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d046fafb/70f2b6e451ad4a17be6d516e673012b8/FLAG697879194 [2021-12-16 03:13:42,780 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:13:42,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-12-16 03:13:42,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d046fafb/70f2b6e451ad4a17be6d516e673012b8/FLAG697879194 [2021-12-16 03:13:43,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d046fafb/70f2b6e451ad4a17be6d516e673012b8 [2021-12-16 03:13:43,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:13:43,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:13:43,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:13:43,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:13:43,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:13:43,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:13:43" (1/1) ... [2021-12-16 03:13:43,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fdabe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:43, skipping insertion in model container [2021-12-16 03:13:43,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:13:43" (1/1) ... [2021-12-16 03:13:43,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:13:43,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:13:43,397 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] [2021-12-16 03:13:43,403 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] [2021-12-16 03:13:43,827 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:13:43,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:43,896 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,064 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:13:44,065 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:13:44,065 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:13:44,068 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:13:44,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:13:44,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:13:44,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:13:44,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:13:44,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:13:44,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:13:44,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:13:44,234 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:13:44,242 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] [2021-12-16 03:13:44,245 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] [2021-12-16 03:13:44,294 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:13:44,308 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,324 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,324 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:13:44,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:13:44,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:13:44,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:13:44,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:13:44,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:13:44,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:13:44,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:13:44,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:13:44,354 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:13:44,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:44,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:13:44,580 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:13:44,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44 WrapperNode [2021-12-16 03:13:44,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:13:44,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:13:44,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:13:44,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:13:44,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,730 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 895 [2021-12-16 03:13:44,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:13:44,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:13:44,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:13:44,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:13:44,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:13:44,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:13:44,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:13:44,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:13:44,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (1/1) ... [2021-12-16 03:13:44,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:13:44,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:44,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:13:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:13:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:13:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-16 03:13:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-16 03:13:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:13:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:13:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:13:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:13:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-16 03:13:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-16 03:13:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:13:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:13:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:13:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:13:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:13:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:13:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:13:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:13:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-16 03:13:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-16 03:13:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:13:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:13:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:13:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:13:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:13:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:13:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:13:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:13:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:13:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:13:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-16 03:13:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-16 03:13:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-16 03:13:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-16 03:13:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:13:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:13:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-16 03:13:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-16 03:13:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-16 03:13:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-16 03:13:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:13:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-16 03:13:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-16 03:13:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:13:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:13:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:13:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:13:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:13:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:13:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-16 03:13:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-16 03:13:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:13:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:13:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:13:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:13:45,100 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:13:45,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:13:45,648 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:13:45,657 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:13:45,660 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:13:45,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:13:45 BoogieIcfgContainer [2021-12-16 03:13:45,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:13:45,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:13:45,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:13:45,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:13:45,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:13:43" (1/3) ... [2021-12-16 03:13:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ec539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:13:45, skipping insertion in model container [2021-12-16 03:13:45,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:44" (2/3) ... [2021-12-16 03:13:45,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ec539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:13:45, skipping insertion in model container [2021-12-16 03:13:45,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:13:45" (3/3) ... [2021-12-16 03:13:45,673 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-12-16 03:13:45,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:13:45,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:13:45,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:13:45,734 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:13:45,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:13:45,749 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) [2021-12-16 03:13:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:13:45,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:45,758 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:45,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2021-12-16 03:13:45,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:45,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541392260] [2021-12-16 03:13:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:45,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:13:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:13:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:13:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:13:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:13:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:13:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:13:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:13:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:13:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:13:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:13:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:13:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:13:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:13:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:13:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:13:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:13:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:13:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:13:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:13:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:13:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-16 03:13:46,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:46,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541392260] [2021-12-16 03:13:46,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541392260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:46,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:46,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:13:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487260242] [2021-12-16 03:13:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:13:46,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:13:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:13:46,326 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) [2021-12-16 03:13:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:46,835 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2021-12-16 03:13:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:13:46,840 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 [2021-12-16 03:13:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:46,850 INFO L225 Difference]: With dead ends: 615 [2021-12-16 03:13:46,853 INFO L226 Difference]: Without dead ends: 319 [2021-12-16 03:13:46,861 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:46,864 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 205 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:46,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 523 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:13:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-16 03:13:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2021-12-16 03:13:46,931 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) [2021-12-16 03:13:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2021-12-16 03:13:46,936 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2021-12-16 03:13:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:46,936 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2021-12-16 03:13:46,937 INFO L471 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) [2021-12-16 03:13:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2021-12-16 03:13:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:13:46,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:46,941 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:13:46,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2021-12-16 03:13:46,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:46,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687359003] [2021-12-16 03:13:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:46,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:13:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:13:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:13:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:13:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:13:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:13:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:13:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:13:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:13:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:13:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:13:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:13:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:13:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:13:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:13:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:13:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:13:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:13:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:13:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:13:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:13:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-16 03:13:47,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:47,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687359003] [2021-12-16 03:13:47,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687359003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:13:47,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562552999] [2021-12-16 03:13:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:47,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:47,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:47,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:13:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:47,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:13:47,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-16 03:13:47,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:47,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562552999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:47,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:13:47,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-16 03:13:47,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671205961] [2021-12-16 03:13:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:47,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:13:47,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:13:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:13:47,832 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) [2021-12-16 03:13:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:48,219 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2021-12-16 03:13:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:13:48,220 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 [2021-12-16 03:13:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:48,223 INFO L225 Difference]: With dead ends: 562 [2021-12-16 03:13:48,223 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 03:13:48,224 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:48,225 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:48,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1120 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:13:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 03:13:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-16 03:13:48,240 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) [2021-12-16 03:13:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2021-12-16 03:13:48,242 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2021-12-16 03:13:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:48,243 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2021-12-16 03:13:48,243 INFO L471 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) [2021-12-16 03:13:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2021-12-16 03:13:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-16 03:13:48,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:48,245 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:48,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:48,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:48,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2021-12-16 03:13:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427249203] [2021-12-16 03:13:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:48,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:48,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:48,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556260851] [2021-12-16 03:13:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:48,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:48,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:48,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:48,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:13:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:13:48,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-16 03:13:49,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:49,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427249203] [2021-12-16 03:13:49,110 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556260851] [2021-12-16 03:13:49,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556260851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:49,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:49,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:13:49,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264073160] [2021-12-16 03:13:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:49,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:13:49,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:13:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:13:49,112 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) [2021-12-16 03:13:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:49,146 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2021-12-16 03:13:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:13:49,148 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 [2021-12-16 03:13:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:49,150 INFO L225 Difference]: With dead ends: 569 [2021-12-16 03:13:49,150 INFO L226 Difference]: Without dead ends: 300 [2021-12-16 03:13:49,151 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:49,152 INFO L933 BasicCegarLoop]: 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 [2021-12-16 03:13:49,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:13:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-16 03:13:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2021-12-16 03:13:49,164 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) [2021-12-16 03:13:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2021-12-16 03:13:49,167 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2021-12-16 03:13:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:49,167 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2021-12-16 03:13:49,167 INFO L471 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) [2021-12-16 03:13:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2021-12-16 03:13:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-16 03:13:49,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:49,169 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:49,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-16 03:13:49,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 03:13:49,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2021-12-16 03:13:49,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:49,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014756081] [2021-12-16 03:13:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:49,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:49,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:49,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908371141] [2021-12-16 03:13:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:49,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:49,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:49,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:49,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:13:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:49,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:13:49,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-16 03:13:50,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:50,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014756081] [2021-12-16 03:13:50,079 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908371141] [2021-12-16 03:13:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908371141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:50,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:50,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:13:50,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37571895] [2021-12-16 03:13:50,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:13:50,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:13:50,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:13:50,081 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) [2021-12-16 03:13:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:50,469 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2021-12-16 03:13:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:13:50,470 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 [2021-12-16 03:13:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:50,472 INFO L225 Difference]: With dead ends: 548 [2021-12-16 03:13:50,472 INFO L226 Difference]: Without dead ends: 297 [2021-12-16 03:13:50,473 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:50,473 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:50,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1344 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:13:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-16 03:13:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-12-16 03:13:50,490 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) [2021-12-16 03:13:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2021-12-16 03:13:50,492 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2021-12-16 03:13:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:50,493 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2021-12-16 03:13:50,493 INFO L471 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) [2021-12-16 03:13:50,493 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2021-12-16 03:13:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-16 03:13:50,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:50,495 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:50,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:50,715 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2021-12-16 03:13:50,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:50,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944770865] [2021-12-16 03:13:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:50,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:50,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:50,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938538883] [2021-12-16 03:13:50,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:13:50,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:50,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:50,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:13:51,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:13:51,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:13:51,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:13:51,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-12-16 03:13:51,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:51,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:51,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944770865] [2021-12-16 03:13:51,577 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:51,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938538883] [2021-12-16 03:13:51,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938538883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:51,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:51,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:13:51,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463154692] [2021-12-16 03:13:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:51,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:13:51,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:13:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:13:51,579 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) [2021-12-16 03:13:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:52,078 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2021-12-16 03:13:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:13:52,078 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 [2021-12-16 03:13:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:52,080 INFO L225 Difference]: With dead ends: 554 [2021-12-16 03:13:52,080 INFO L226 Difference]: Without dead ends: 309 [2021-12-16 03:13:52,082 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:52,082 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:52,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1949 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:13:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-16 03:13:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-16 03:13:52,094 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) [2021-12-16 03:13:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2021-12-16 03:13:52,096 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2021-12-16 03:13:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:52,096 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2021-12-16 03:13:52,097 INFO L471 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) [2021-12-16 03:13:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2021-12-16 03:13:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-16 03:13:52,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:52,098 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:52,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:52,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:52,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2021-12-16 03:13:52,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169000214] [2021-12-16 03:13:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:52,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:52,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:52,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614435447] [2021-12-16 03:13:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:52,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:52,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:52,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:13:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:13:52,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-16 03:13:53,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:53,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169000214] [2021-12-16 03:13:53,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614435447] [2021-12-16 03:13:53,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614435447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:53,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:53,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:13:53,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150281671] [2021-12-16 03:13:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:53,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:13:53,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:13:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:13:53,048 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) [2021-12-16 03:13:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:53,218 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2021-12-16 03:13:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:13:53,218 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 [2021-12-16 03:13:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:53,221 INFO L225 Difference]: With dead ends: 698 [2021-12-16 03:13:53,221 INFO L226 Difference]: Without dead ends: 438 [2021-12-16 03:13:53,223 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:53,223 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 173 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:53,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2498 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-16 03:13:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2021-12-16 03:13:53,239 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) [2021-12-16 03:13:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2021-12-16 03:13:53,240 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2021-12-16 03:13:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:53,241 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2021-12-16 03:13:53,241 INFO L471 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) [2021-12-16 03:13:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2021-12-16 03:13:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-16 03:13:53,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:53,243 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:53,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 03:13:53,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:53,466 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2021-12-16 03:13:53,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502618515] [2021-12-16 03:13:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:53,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:53,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787332892] [2021-12-16 03:13:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:53,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:53,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:53,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:13:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 03:13:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-16 03:13:54,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:54,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502618515] [2021-12-16 03:13:54,192 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787332892] [2021-12-16 03:13:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787332892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:54,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:54,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:13:54,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160566135] [2021-12-16 03:13:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:54,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:13:54,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:13:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:13:54,194 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) [2021-12-16 03:13:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:54,309 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2021-12-16 03:13:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:13:54,309 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 [2021-12-16 03:13:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:54,312 INFO L225 Difference]: With dead ends: 575 [2021-12-16 03:13:54,312 INFO L226 Difference]: Without dead ends: 309 [2021-12-16 03:13:54,313 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:54,314 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:54,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1469 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-16 03:13:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-16 03:13:54,327 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) [2021-12-16 03:13:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2021-12-16 03:13:54,328 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2021-12-16 03:13:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:54,329 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2021-12-16 03:13:54,329 INFO L471 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) [2021-12-16 03:13:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2021-12-16 03:13:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-16 03:13:54,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:54,332 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:54,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:54,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:54,547 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2021-12-16 03:13:54,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912936529] [2021-12-16 03:13:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:54,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:54,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:54,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099987289] [2021-12-16 03:13:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:54,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:54,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:54,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:13:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:55,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-16 03:13:55,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-16 03:13:55,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:55,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912936529] [2021-12-16 03:13:55,364 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099987289] [2021-12-16 03:13:55,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099987289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:55,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:55,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:13:55,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908030519] [2021-12-16 03:13:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:55,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:13:55,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:13:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:13:55,366 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) [2021-12-16 03:13:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:55,531 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2021-12-16 03:13:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:13:55,532 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 [2021-12-16 03:13:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:55,534 INFO L225 Difference]: With dead ends: 711 [2021-12-16 03:13:55,534 INFO L226 Difference]: Without dead ends: 451 [2021-12-16 03:13:55,536 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:55,536 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 177 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:55,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 3533 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-16 03:13:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2021-12-16 03:13:55,551 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) [2021-12-16 03:13:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2021-12-16 03:13:55,552 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2021-12-16 03:13:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:55,553 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2021-12-16 03:13:55,553 INFO L471 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) [2021-12-16 03:13:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2021-12-16 03:13:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-16 03:13:55,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:55,555 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:55,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:55,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:55,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2021-12-16 03:13:55,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:55,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973466537] [2021-12-16 03:13:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:55,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:55,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:55,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076596183] [2021-12-16 03:13:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:55,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:55,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:55,828 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:55,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:13:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:56,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:13:56,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-16 03:13:56,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:56,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973466537] [2021-12-16 03:13:56,547 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076596183] [2021-12-16 03:13:56,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076596183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:56,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:56,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:13:56,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912344096] [2021-12-16 03:13:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:56,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:13:56,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:13:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:13:56,549 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) [2021-12-16 03:13:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:56,731 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2021-12-16 03:13:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:13:56,732 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 [2021-12-16 03:13:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:56,734 INFO L225 Difference]: With dead ends: 591 [2021-12-16 03:13:56,734 INFO L226 Difference]: Without dead ends: 312 [2021-12-16 03:13:56,735 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:13:56,737 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 170 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:56,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1658 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-16 03:13:56,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-16 03:13:56,751 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) [2021-12-16 03:13:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2021-12-16 03:13:56,753 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2021-12-16 03:13:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:56,753 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2021-12-16 03:13:56,753 INFO L471 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) [2021-12-16 03:13:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2021-12-16 03:13:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-16 03:13:56,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:56,756 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:13:56,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:56,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-16 03:13:56,978 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2021-12-16 03:13:56,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:56,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563769419] [2021-12-16 03:13:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:56,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:57,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608455190] [2021-12-16 03:13:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:57,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:57,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:13:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:57,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-16 03:13:57,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:57,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 03:13:57,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 03:13:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-16 03:13:57,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:13:58,567 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-16 03:13:58,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-16 03:13:58,588 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-16 03:13:58,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 03:13:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-12-16 03:13:58,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:58,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563769419] [2021-12-16 03:13:58,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:58,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608455190] [2021-12-16 03:13:58,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608455190] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:13:58,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:13:58,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2021-12-16 03:13:58,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201912540] [2021-12-16 03:13:58,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:13:58,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-16 03:13:58,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-16 03:13:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-12-16 03:13:58,660 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) [2021-12-16 03:14:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:00,004 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2021-12-16 03:14:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 03:14:00,005 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 [2021-12-16 03:14:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:00,006 INFO L225 Difference]: With dead ends: 615 [2021-12-16 03:14:00,006 INFO L226 Difference]: Without dead ends: 325 [2021-12-16 03:14:00,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2021-12-16 03:14:00,008 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 5224 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:00,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5571 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1810 Invalid, 0 Unknown, 116 Unchecked, 1.1s Time] [2021-12-16 03:14:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-16 03:14:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2021-12-16 03:14:00,025 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) [2021-12-16 03:14:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2021-12-16 03:14:00,027 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2021-12-16 03:14:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:00,027 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2021-12-16 03:14:00,027 INFO L471 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) [2021-12-16 03:14:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2021-12-16 03:14:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-16 03:14:00,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:00,029 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:14:00,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 03:14:00,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2021-12-16 03:14:00,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:00,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137596057] [2021-12-16 03:14:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:00,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:00,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:00,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093197231] [2021-12-16 03:14:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:00,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:00,299 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:00,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 03:14:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:00,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:14:00,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-16 03:14:00,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:00,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:00,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137596057] [2021-12-16 03:14:00,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:00,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093197231] [2021-12-16 03:14:00,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093197231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:00,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:00,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:14:00,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830881714] [2021-12-16 03:14:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:00,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:14:00,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:14:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:14:00,965 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) [2021-12-16 03:14:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:01,208 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2021-12-16 03:14:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:14:01,208 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 [2021-12-16 03:14:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:01,210 INFO L225 Difference]: With dead ends: 609 [2021-12-16 03:14:01,210 INFO L226 Difference]: Without dead ends: 320 [2021-12-16 03:14:01,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:14:01,212 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:01,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1569 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:14:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-16 03:14:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2021-12-16 03:14:01,225 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) [2021-12-16 03:14:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2021-12-16 03:14:01,227 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2021-12-16 03:14:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:01,227 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2021-12-16 03:14:01,227 INFO L471 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) [2021-12-16 03:14:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2021-12-16 03:14:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-16 03:14:01,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:01,229 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:14:01,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:01,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 03:14:01,450 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2021-12-16 03:14:01,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:01,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143177963] [2021-12-16 03:14:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:01,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:01,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:01,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543224587] [2021-12-16 03:14:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:01,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:01,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:01,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:01,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 03:14:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:02,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-16 03:14:02,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:07,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-16 03:14:07,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-16 03:14:07,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-16 03:14:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-16 03:14:07,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:14:08,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-16 03:14:08,234 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-16 03:14:08,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-16 03:14:08,426 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-16 03:14:08,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-16 03:14:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-16 03:14:08,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143177963] [2021-12-16 03:14:08,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543224587] [2021-12-16 03:14:08,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543224587] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:14:08,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:14:08,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2021-12-16 03:14:08,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212503760] [2021-12-16 03:14:08,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:14:08,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-16 03:14:08,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-16 03:14:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=808, Unknown=1, NotChecked=0, Total=930 [2021-12-16 03:14:08,530 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) [2021-12-16 03:14:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:11,129 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2021-12-16 03:14:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:14:11,129 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 [2021-12-16 03:14:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:11,132 INFO L225 Difference]: With dead ends: 781 [2021-12-16 03:14:11,132 INFO L226 Difference]: Without dead ends: 500 [2021-12-16 03:14:11,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=217, Invalid=1422, Unknown=1, NotChecked=0, Total=1640 [2021-12-16 03:14:11,134 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 527 mSDsluCounter, 5057 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 4641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1287 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:11,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 5470 Invalid, 4641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3188 Invalid, 0 Unknown, 1287 Unchecked, 2.2s Time] [2021-12-16 03:14:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-16 03:14:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2021-12-16 03:14:11,155 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) [2021-12-16 03:14:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2021-12-16 03:14:11,157 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2021-12-16 03:14:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:11,157 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2021-12-16 03:14:11,157 INFO L471 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) [2021-12-16 03:14:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2021-12-16 03:14:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-16 03:14:11,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:11,159 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:14:11,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:11,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 03:14:11,375 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2021-12-16 03:14:11,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:11,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871006937] [2021-12-16 03:14:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:11,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:11,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696574772] [2021-12-16 03:14:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:11,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:11,429 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:11,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 03:14:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:11,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-16 03:14:11,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:11,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:14:16,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:14:16,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:14:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:14:16,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:14:16,984 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1636 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1636))) (exists ((v_ArrVal_1635 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1635)))) is different from true [2021-12-16 03:14:17,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:14:17,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:14:17,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:14:17,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:14:17,339 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 03:14:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 156 proven. 4 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-16 03:14:17,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:14:17,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:17,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871006937] [2021-12-16 03:14:17,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:17,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696574772] [2021-12-16 03:14:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696574772] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:14:17,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:14:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-16 03:14:17,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231060529] [2021-12-16 03:14:17,963 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 03:14:17,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 03:14:17,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 03:14:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=190, Unknown=14, NotChecked=28, Total=272 [2021-12-16 03:14:17,964 INFO L87 Difference]: Start difference. First operand 365 states and 543 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 03:14:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:20,662 INFO L93 Difference]: Finished difference Result 725 states and 1173 transitions. [2021-12-16 03:14:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 03:14:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 218 [2021-12-16 03:14:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:20,665 INFO L225 Difference]: With dead ends: 725 [2021-12-16 03:14:20,665 INFO L226 Difference]: Without dead ends: 427 [2021-12-16 03:14:20,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=50, Invalid=244, Unknown=16, NotChecked=32, Total=342 [2021-12-16 03:14:20,667 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 126 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2616 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:20,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1789 Invalid, 4082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1339 Invalid, 0 Unknown, 2616 Unchecked, 0.9s Time] [2021-12-16 03:14:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-16 03:14:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 384. [2021-12-16 03:14:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 230 states have (on average 1.1695652173913043) internal successors, (269), 236 states have internal predecessors, (269), 115 states have call successors, (115), 31 states have call predecessors, (115), 38 states have return successors, (206), 116 states have call predecessors, (206), 114 states have call successors, (206) [2021-12-16 03:14:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 590 transitions. [2021-12-16 03:14:20,691 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 590 transitions. Word has length 218 [2021-12-16 03:14:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:20,691 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 590 transitions. [2021-12-16 03:14:20,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 03:14:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 590 transitions. [2021-12-16 03:14:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-16 03:14:20,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:20,708 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:14:20,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:20,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 03:14:20,929 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash 256742611, now seen corresponding path program 1 times [2021-12-16 03:14:20,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267767633] [2021-12-16 03:14:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:20,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:20,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:20,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945956376] [2021-12-16 03:14:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:20,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:20,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:20,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:20,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 03:14:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:21,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-16 03:14:21,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-16 03:14:21,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:21,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267767633] [2021-12-16 03:14:21,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945956376] [2021-12-16 03:14:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945956376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:21,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:21,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:14:21,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054947814] [2021-12-16 03:14:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:21,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:14:21,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:14:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:14:21,788 INFO L87 Difference]: Start difference. First operand 384 states and 590 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) [2021-12-16 03:14:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:22,021 INFO L93 Difference]: Finished difference Result 690 states and 1124 transitions. [2021-12-16 03:14:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:14:22,022 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 [2021-12-16 03:14:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:22,024 INFO L225 Difference]: With dead ends: 690 [2021-12-16 03:14:22,024 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 03:14:22,025 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:14:22,026 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 11 mSDsluCounter, 4028 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:22,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4439 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:14:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 03:14:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-12-16 03:14:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 238 states have (on average 1.1638655462184875) internal successors, (277), 246 states have internal predecessors, (277), 115 states have call successors, (115), 31 states have call predecessors, (115), 40 states have return successors, (251), 116 states have call predecessors, (251), 114 states have call successors, (251) [2021-12-16 03:14:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 643 transitions. [2021-12-16 03:14:22,046 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 643 transitions. Word has length 248 [2021-12-16 03:14:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:22,047 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 643 transitions. [2021-12-16 03:14:22,047 INFO L471 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) [2021-12-16 03:14:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 643 transitions. [2021-12-16 03:14:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-16 03:14:22,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:22,048 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:22,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:22,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 03:14:22,269 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash 879399013, now seen corresponding path program 2 times [2021-12-16 03:14:22,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:22,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523614216] [2021-12-16 03:14:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:22,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:22,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878355348] [2021-12-16 03:14:22,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:14:22,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:22,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:22,319 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:22,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 03:14:23,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:14:23,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:14:23,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-16 03:14:23,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-12-16 03:14:23,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:23,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:23,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523614216] [2021-12-16 03:14:23,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:23,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878355348] [2021-12-16 03:14:23,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878355348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:23,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:23,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 03:14:23,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818060660] [2021-12-16 03:14:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:23,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 03:14:23,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 03:14:23,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:14:23,424 INFO L87 Difference]: Start difference. First operand 394 states and 643 transitions. Second operand has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-16 03:14:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:23,698 INFO L93 Difference]: Finished difference Result 688 states and 1147 transitions. [2021-12-16 03:14:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 03:14:23,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 242 [2021-12-16 03:14:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:23,703 INFO L225 Difference]: With dead ends: 688 [2021-12-16 03:14:23,703 INFO L226 Difference]: Without dead ends: 398 [2021-12-16 03:14:23,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:14:23,707 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 12 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:23,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 4868 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:14:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-16 03:14:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2021-12-16 03:14:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 238 states have (on average 1.1638655462184875) internal successors, (277), 246 states have internal predecessors, (277), 115 states have call successors, (115), 31 states have call predecessors, (115), 40 states have return successors, (244), 116 states have call predecessors, (244), 114 states have call successors, (244) [2021-12-16 03:14:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 636 transitions. [2021-12-16 03:14:23,731 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 636 transitions. Word has length 242 [2021-12-16 03:14:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:23,731 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 636 transitions. [2021-12-16 03:14:23,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-16 03:14:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 636 transitions. [2021-12-16 03:14:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-16 03:14:23,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:23,733 INFO L514 BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:23,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:23,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:23,947 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash 139177043, now seen corresponding path program 3 times [2021-12-16 03:14:23,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683123778] [2021-12-16 03:14:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:23,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:23,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591619030] [2021-12-16 03:14:23,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:14:23,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:23,994 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:23,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 03:14:25,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 03:14:25,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:14:25,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-16 03:14:25,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-16 03:14:25,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:25,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683123778] [2021-12-16 03:14:25,384 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591619030] [2021-12-16 03:14:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591619030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:25,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:25,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:14:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768237959] [2021-12-16 03:14:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:25,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:14:25,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:14:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:14:25,386 INFO L87 Difference]: Start difference. First operand 394 states and 636 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) [2021-12-16 03:14:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:25,645 INFO L93 Difference]: Finished difference Result 694 states and 1145 transitions. [2021-12-16 03:14:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:14:25,652 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 236 [2021-12-16 03:14:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:25,654 INFO L225 Difference]: With dead ends: 694 [2021-12-16 03:14:25,654 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 03:14:25,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:14:25,656 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 11 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:25,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4414 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:14:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 03:14:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-12-16 03:14:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 238 states have (on average 1.1638655462184875) internal successors, (277), 246 states have internal predecessors, (277), 115 states have call successors, (115), 31 states have call predecessors, (115), 40 states have return successors, (241), 116 states have call predecessors, (241), 114 states have call successors, (241) [2021-12-16 03:14:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 633 transitions. [2021-12-16 03:14:25,675 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 633 transitions. Word has length 236 [2021-12-16 03:14:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 633 transitions. [2021-12-16 03:14:25,676 INFO L471 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) [2021-12-16 03:14:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 633 transitions. [2021-12-16 03:14:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-16 03:14:25,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:25,677 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:25,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:25,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 03:14:25,899 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:25,899 INFO L85 PathProgramCache]: Analyzing trace with hash 58214273, now seen corresponding path program 4 times [2021-12-16 03:14:25,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:25,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157977466] [2021-12-16 03:14:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:25,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:25,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:25,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349906623] [2021-12-16 03:14:25,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 03:14:25,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:25,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:25,942 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:14:25,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 03:14:26,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 03:14:26,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:14:26,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 125 conjunts are in the unsatisfiable core [2021-12-16 03:14:26,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:26,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:14:26,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 03:14:26,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:14:26,730 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-16 03:14:26,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 03:14:26,782 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:14:26,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-16 03:14:26,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-16 03:14:26,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 03:14:26,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:14:26,944 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2231 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2231))) is different from true [2021-12-16 03:14:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:14:27,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:14:27,073 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:14:27,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-16 03:14:27,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-16 03:14:29,823 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2232 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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_2232)))) is different from true [2021-12-16 03:14:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 290 proven. 44 refuted. 0 times theorem prover too weak. 125 trivial. 3 not checked. [2021-12-16 03:14:39,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:14:40,949 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2240 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115| Int)) (not (= (select (select (store |c_#memory_$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_2240)) |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.offset| 32)) 0))) is different from false [2021-12-16 03:14:40,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:40,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157977466] [2021-12-16 03:14:40,950 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:40,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349906623] [2021-12-16 03:14:40,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349906623] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:14:40,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:14:40,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-16 03:14:40,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961798665] [2021-12-16 03:14:40,951 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 03:14:40,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-16 03:14:40,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-16 03:14:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1368, Unknown=6, NotChecked=228, Total=1722 [2021-12-16 03:14:40,952 INFO L87 Difference]: Start difference. First operand 394 states and 633 transitions. Second operand has 35 states, 31 states have (on average 3.5806451612903225) internal successors, (111), 30 states have internal predecessors, (111), 15 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (31), 13 states have call predecessors, (31), 15 states have call successors, (31)