./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:47:20,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:47:20,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:47:20,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:47:20,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:47:20,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:47:20,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:47:20,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:47:20,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:47:20,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:47:20,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:47:20,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:47:20,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:47:20,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:47:20,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:47:20,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:47:20,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:47:20,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:47:20,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:47:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:47:20,151 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:47:20,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:47:20,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:47:20,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:47:20,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:47:20,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:47:20,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:47:20,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:47:20,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:47:20,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:47:20,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:47:20,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:47:20,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:47:20,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:47:20,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:47:20,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:47:20,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:47:20,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:47:20,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:47:20,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:47:20,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:47:20,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:47:20,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:47:20,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:47:20,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:47:20,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:47:20,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:47:20,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:47:20,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:47:20,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:47:20,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:47:20,202 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:47:20,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:47:20,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:47:20,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:47:20,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:47:20,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:47:20,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:47:20,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:47:20,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:47:20,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:47:20,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:47:20,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:47:20,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:47:20,205 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:47:20,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:47:20,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:47:20,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2022-07-21 09:47:20,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:47:20,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:47:20,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:47:20,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:47:20,506 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:47:20,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-07-21 09:47:20,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8ee915e/4cb2c702e3754663b81aaeea4eb4ab96/FLAG2d9535a8e [2022-07-21 09:47:21,143 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:47:21,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-07-21 09:47:21,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8ee915e/4cb2c702e3754663b81aaeea4eb4ab96/FLAG2d9535a8e [2022-07-21 09:47:21,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8ee915e/4cb2c702e3754663b81aaeea4eb4ab96 [2022-07-21 09:47:21,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:47:21,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:47:21,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:47:21,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:47:21,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:47:21,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:21" (1/1) ... [2022-07-21 09:47:21,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a94c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:21, skipping insertion in model container [2022-07-21 09:47:21,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:21" (1/1) ... [2022-07-21 09:47:21,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:47:21,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:47:21,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-07-21 09:47:21,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-07-21 09:47:22,405 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:47:22,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,468 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,468 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,470 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,482 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,483 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,484 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,485 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:47:22,759 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:47:22,759 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:47:22,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:47:22,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:47:22,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:47:22,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:47:22,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:47:22,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:47:22,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:47:22,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,856 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:47:22,913 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:47:22,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-07-21 09:47:22,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-07-21 09:47:22,968 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:47:22,974 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,988 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:22,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:23,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:47:23,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:47:23,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:47:23,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:47:23,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:47:23,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:47:23,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:47:23,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:47:23,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:47:23,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:47:23,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:23,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:23,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:47:23,229 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:47:23,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23 WrapperNode [2022-07-21 09:47:23,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:47:23,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:47:23,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:47:23,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:47:23,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,411 INFO L137 Inliner]: procedures = 689, calls = 1497, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 598 [2022-07-21 09:47:23,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:47:23,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:47:23,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:47:23,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:47:23,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:47:23,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:47:23,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:47:23,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:47:23,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (1/1) ... [2022-07-21 09:47:23,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:47:23,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:23,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:47:23,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:47:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-21 09:47:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-21 09:47:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:47:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:47:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:47:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:47:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:47:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:47:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:47:23,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:47:23,552 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:47:23,553 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:47:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:47:23,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:47:23,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2022-07-21 09:47:23,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2022-07-21 09:47:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:47:23,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:47:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:47:23,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:47:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-21 09:47:23,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-21 09:47:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-21 09:47:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-21 09:47:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:47:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:47:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:47:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:47:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:47:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:47:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:47:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:47:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:47:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:47:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-21 09:47:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-21 09:47:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-21 09:47:23,558 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-21 09:47:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:47:23,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:47:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:47:23,804 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:47:23,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:47:24,359 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:47:24,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:47:24,366 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 09:47:24,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:24 BoogieIcfgContainer [2022-07-21 09:47:24,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:47:24,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:47:24,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:47:24,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:47:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:47:21" (1/3) ... [2022-07-21 09:47:24,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45296b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:24, skipping insertion in model container [2022-07-21 09:47:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:23" (2/3) ... [2022-07-21 09:47:24,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45296b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:24, skipping insertion in model container [2022-07-21 09:47:24,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:24" (3/3) ... [2022-07-21 09:47:24,374 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2022-07-21 09:47:24,383 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:47:24,384 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:47:24,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:47:24,435 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@771d8518, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@439d9011 [2022-07-21 09:47:24,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:47:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 09:47:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 09:47:24,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:24,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2022-07-21 09:47:24,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:24,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 432166812, now seen corresponding path program 1 times [2022-07-21 09:47:24,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:24,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981043092] [2022-07-21 09:47:24,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:24,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:47:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:47:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:47:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:47:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:47:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:47:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:47:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:47:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:47:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981043092] [2022-07-21 09:47:25,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981043092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:25,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:25,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534878198] [2022-07-21 09:47:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:25,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:25,186 INFO L87 Difference]: Start difference. First operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:47:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:25,522 INFO L93 Difference]: Finished difference Result 361 states and 504 transitions. [2022-07-21 09:47:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:47:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2022-07-21 09:47:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:25,537 INFO L225 Difference]: With dead ends: 361 [2022-07-21 09:47:25,537 INFO L226 Difference]: Without dead ends: 202 [2022-07-21 09:47:25,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:25,545 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 89 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:25,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 308 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:47:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-21 09:47:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2022-07-21 09:47:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-21 09:47:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2022-07-21 09:47:25,593 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 105 [2022-07-21 09:47:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:25,593 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2022-07-21 09:47:25,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:47:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2022-07-21 09:47:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 09:47:25,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:25,598 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2022-07-21 09:47:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:47:25,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672400, now seen corresponding path program 1 times [2022-07-21 09:47:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:25,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161549028] [2022-07-21 09:47:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:47:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:47:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:47:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:47:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:47:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:47:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:47:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:47:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:47:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:47:25,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:25,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161549028] [2022-07-21 09:47:25,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161549028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:25,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:25,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:47:25,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392592697] [2022-07-21 09:47:25,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:25,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:47:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:47:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:47:25,980 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 09:47:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:26,496 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-07-21 09:47:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:47:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 122 [2022-07-21 09:47:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:26,499 INFO L225 Difference]: With dead ends: 341 [2022-07-21 09:47:26,499 INFO L226 Difference]: Without dead ends: 245 [2022-07-21 09:47:26,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:47:26,500 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 278 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:26,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 602 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:47:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-21 09:47:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2022-07-21 09:47:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-21 09:47:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2022-07-21 09:47:26,513 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 122 [2022-07-21 09:47:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:26,513 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2022-07-21 09:47:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 09:47:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2022-07-21 09:47:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:47:26,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:26,515 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2022-07-21 09:47:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:47:26,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2103837312, now seen corresponding path program 1 times [2022-07-21 09:47:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:26,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127228481] [2022-07-21 09:47:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:47:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:47:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:47:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:47:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:47:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:47:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:47:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:47:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:47:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:47:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:47:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 09:47:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:47:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127228481] [2022-07-21 09:47:26,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127228481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:26,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:26,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:47:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782200581] [2022-07-21 09:47:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:26,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:47:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:47:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:47:26,844 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 09:47:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:27,579 INFO L93 Difference]: Finished difference Result 371 states and 489 transitions. [2022-07-21 09:47:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:47:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-07-21 09:47:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:27,581 INFO L225 Difference]: With dead ends: 371 [2022-07-21 09:47:27,581 INFO L226 Difference]: Without dead ends: 226 [2022-07-21 09:47:27,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:47:27,582 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 238 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:27,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 849 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:47:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-21 09:47:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 162. [2022-07-21 09:47:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-07-21 09:47:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2022-07-21 09:47:27,597 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 130 [2022-07-21 09:47:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:27,598 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2022-07-21 09:47:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 09:47:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2022-07-21 09:47:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 09:47:27,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:27,601 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1] [2022-07-21 09:47:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:47:27,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash -209170488, now seen corresponding path program 1 times [2022-07-21 09:47:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:27,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848500672] [2022-07-21 09:47:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:27,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:27,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31906666] [2022-07-21 09:47:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:27,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:27,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:27,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:27,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:47:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:47:28,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 09:47:28,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:28,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848500672] [2022-07-21 09:47:28,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:28,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31906666] [2022-07-21 09:47:28,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31906666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:28,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:28,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:47:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079442993] [2022-07-21 09:47:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:47:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:47:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:47:28,175 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:47:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:28,324 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2022-07-21 09:47:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:47:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 145 [2022-07-21 09:47:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:28,326 INFO L225 Difference]: With dead ends: 261 [2022-07-21 09:47:28,326 INFO L226 Difference]: Without dead ends: 162 [2022-07-21 09:47:28,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:47:28,327 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 235 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:28,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 781 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-21 09:47:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-21 09:47:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-07-21 09:47:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2022-07-21 09:47:28,336 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 145 [2022-07-21 09:47:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:28,336 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2022-07-21 09:47:28,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:47:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2022-07-21 09:47:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:47:28,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:28,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:28,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:47:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:28,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1337604585, now seen corresponding path program 1 times [2022-07-21 09:47:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:28,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559639550] [2022-07-21 09:47:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:28,597 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118357150] [2022-07-21 09:47:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:28,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:28,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:28,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:47:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:28,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:47:28,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:47:29,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:29,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559639550] [2022-07-21 09:47:29,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:29,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118357150] [2022-07-21 09:47:29,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118357150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:29,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:29,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:47:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536626583] [2022-07-21 09:47:29,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:47:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:47:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:47:29,061 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 09:47:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:29,258 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions. [2022-07-21 09:47:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:47:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2022-07-21 09:47:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:29,259 INFO L225 Difference]: With dead ends: 274 [2022-07-21 09:47:29,260 INFO L226 Difference]: Without dead ends: 162 [2022-07-21 09:47:29,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:47:29,260 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 300 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:29,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1041 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-21 09:47:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-21 09:47:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:47:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2022-07-21 09:47:29,268 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 161 [2022-07-21 09:47:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:29,268 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2022-07-21 09:47:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 09:47:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2022-07-21 09:47:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:47:29,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:29,270 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:29,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:29,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 996052163, now seen corresponding path program 1 times [2022-07-21 09:47:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:29,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369659904] [2022-07-21 09:47:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:29,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:29,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238230025] [2022-07-21 09:47:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:29,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:29,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:29,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:29,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:47:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:29,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:47:29,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:47:30,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369659904] [2022-07-21 09:47:30,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238230025] [2022-07-21 09:47:30,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238230025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:30,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:30,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:47:30,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908441638] [2022-07-21 09:47:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:30,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:47:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:47:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:47:30,108 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:30,274 INFO L93 Difference]: Finished difference Result 286 states and 356 transitions. [2022-07-21 09:47:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:47:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-21 09:47:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:30,278 INFO L225 Difference]: With dead ends: 286 [2022-07-21 09:47:30,279 INFO L226 Difference]: Without dead ends: 180 [2022-07-21 09:47:30,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:47:30,280 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 21 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:30,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 893 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-21 09:47:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2022-07-21 09:47:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:47:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2022-07-21 09:47:30,287 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 176 [2022-07-21 09:47:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:30,288 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2022-07-21 09:47:30,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2022-07-21 09:47:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:47:30,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:30,290 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:30,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:30,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:30,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash 28701509, now seen corresponding path program 1 times [2022-07-21 09:47:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523300421] [2022-07-21 09:47:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:30,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:30,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751391849] [2022-07-21 09:47:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:30,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:30,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:30,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:30,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:47:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:30,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:47:30,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:47:30,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523300421] [2022-07-21 09:47:30,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751391849] [2022-07-21 09:47:30,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751391849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:30,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:30,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447981396] [2022-07-21 09:47:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:30,970 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:30,989 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2022-07-21 09:47:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:47:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-21 09:47:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:30,990 INFO L225 Difference]: With dead ends: 274 [2022-07-21 09:47:30,990 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 09:47:30,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:30,991 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:30,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 583 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 09:47:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2022-07-21 09:47:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 117 states have internal predecessors, (138), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:47:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2022-07-21 09:47:30,999 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 176 [2022-07-21 09:47:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:31,007 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2022-07-21 09:47:31,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2022-07-21 09:47:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:47:31,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:31,009 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:31,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:31,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -463924665, now seen corresponding path program 1 times [2022-07-21 09:47:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:31,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131252147] [2022-07-21 09:47:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:31,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:31,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820533261] [2022-07-21 09:47:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:31,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:31,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:31,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:47:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:31,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 09:47:31,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-21 09:47:31,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-21 09:47:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:31,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131252147] [2022-07-21 09:47:31,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:31,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820533261] [2022-07-21 09:47:31,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820533261] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:31,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:47:31,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:47:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777986164] [2022-07-21 09:47:31,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:31,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:47:31,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:47:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:47:31,897 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 09:47:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:31,932 INFO L93 Difference]: Finished difference Result 178 states and 222 transitions. [2022-07-21 09:47:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:47:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 176 [2022-07-21 09:47:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:31,933 INFO L225 Difference]: With dead ends: 178 [2022-07-21 09:47:31,934 INFO L226 Difference]: Without dead ends: 176 [2022-07-21 09:47:31,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:47:31,934 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 6 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:31,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 970 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-21 09:47:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-07-21 09:47:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 122 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-21 09:47:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 219 transitions. [2022-07-21 09:47:31,942 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 219 transitions. Word has length 176 [2022-07-21 09:47:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:31,943 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 219 transitions. [2022-07-21 09:47:31,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 09:47:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 219 transitions. [2022-07-21 09:47:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:47:31,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:31,944 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:31,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:32,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1104137534, now seen corresponding path program 1 times [2022-07-21 09:47:32,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119607079] [2022-07-21 09:47:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:32,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:32,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572416546] [2022-07-21 09:47:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:32,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:47:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:32,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 09:47:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:47:32,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:32,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119607079] [2022-07-21 09:47:32,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572416546] [2022-07-21 09:47:32,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572416546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:32,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:32,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:47:32,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614127035] [2022-07-21 09:47:32,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:32,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:47:32,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:32,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:47:32,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:47:32,662 INFO L87 Difference]: Start difference. First operand 175 states and 219 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:47:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:32,705 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2022-07-21 09:47:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:47:32,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 176 [2022-07-21 09:47:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:32,707 INFO L225 Difference]: With dead ends: 281 [2022-07-21 09:47:32,707 INFO L226 Difference]: Without dead ends: 175 [2022-07-21 09:47:32,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:47:32,708 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:32,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-21 09:47:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-21 09:47:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.194915254237288) internal successors, (141), 122 states have internal predecessors, (141), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-21 09:47:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2022-07-21 09:47:32,716 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 176 [2022-07-21 09:47:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:32,716 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2022-07-21 09:47:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:47:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2022-07-21 09:47:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-21 09:47:32,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:32,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:32,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:32,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:32,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424536, now seen corresponding path program 1 times [2022-07-21 09:47:32,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:32,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214404877] [2022-07-21 09:47:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:32,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:32,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732273821] [2022-07-21 09:47:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:32,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:32,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:32,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:47:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:33,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 09:47:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:47:33,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:33,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214404877] [2022-07-21 09:47:33,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:33,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732273821] [2022-07-21 09:47:33,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732273821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:33,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:33,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:47:33,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578862186] [2022-07-21 09:47:33,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:33,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:47:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:47:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:47:33,408 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:47:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:33,463 INFO L93 Difference]: Finished difference Result 283 states and 351 transitions. [2022-07-21 09:47:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:47:33,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 177 [2022-07-21 09:47:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:33,467 INFO L225 Difference]: With dead ends: 283 [2022-07-21 09:47:33,468 INFO L226 Difference]: Without dead ends: 177 [2022-07-21 09:47:33,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:47:33,468 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 18 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:33,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 942 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-21 09:47:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-07-21 09:47:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 123 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-21 09:47:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 219 transitions. [2022-07-21 09:47:33,475 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 219 transitions. Word has length 177 [2022-07-21 09:47:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:33,475 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 219 transitions. [2022-07-21 09:47:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:47:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 219 transitions. [2022-07-21 09:47:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 09:47:33,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:33,477 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:33,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:33,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1080671750, now seen corresponding path program 1 times [2022-07-21 09:47:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146795898] [2022-07-21 09:47:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:33,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:33,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434590535] [2022-07-21 09:47:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:33,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:33,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:33,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:33,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:47:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:34,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 09:47:34,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-21 09:47:34,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:34,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146795898] [2022-07-21 09:47:34,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:34,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434590535] [2022-07-21 09:47:34,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434590535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:34,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:34,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768884785] [2022-07-21 09:47:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:34,150 INFO L87 Difference]: Start difference. First operand 176 states and 219 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:34,188 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-07-21 09:47:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:47:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-07-21 09:47:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:34,190 INFO L225 Difference]: With dead ends: 293 [2022-07-21 09:47:34,190 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 09:47:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:34,191 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 7 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:34,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 09:47:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2022-07-21 09:47:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 124 states have internal predecessors, (143), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-21 09:47:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 220 transitions. [2022-07-21 09:47:34,198 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 220 transitions. Word has length 179 [2022-07-21 09:47:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:34,198 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 220 transitions. [2022-07-21 09:47:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 220 transitions. [2022-07-21 09:47:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 09:47:34,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:34,200 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:34,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:47:34,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash 712361510, now seen corresponding path program 1 times [2022-07-21 09:47:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192507364] [2022-07-21 09:47:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:34,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:34,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974756798] [2022-07-21 09:47:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:34,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:34,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:34,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:47:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-21 09:47:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:35,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-21 09:47:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-21 09:47:35,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:35,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:35,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192507364] [2022-07-21 09:47:35,038 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:35,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974756798] [2022-07-21 09:47:35,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974756798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:35,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:35,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:47:35,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529371820] [2022-07-21 09:47:35,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:35,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:47:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:47:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:47:35,043 INFO L87 Difference]: Start difference. First operand 177 states and 220 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-21 09:47:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:35,325 INFO L93 Difference]: Finished difference Result 319 states and 401 transitions. [2022-07-21 09:47:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:47:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 179 [2022-07-21 09:47:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:35,327 INFO L225 Difference]: With dead ends: 319 [2022-07-21 09:47:35,327 INFO L226 Difference]: Without dead ends: 202 [2022-07-21 09:47:35,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:47:35,328 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 107 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:35,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1454 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:47:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-21 09:47:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-07-21 09:47:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.2014925373134329) internal successors, (161), 138 states have internal predecessors, (161), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 36 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 241 transitions. [2022-07-21 09:47:35,335 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 241 transitions. Word has length 179 [2022-07-21 09:47:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:35,336 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 241 transitions. [2022-07-21 09:47:35,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-21 09:47:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 241 transitions. [2022-07-21 09:47:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 09:47:35,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:35,337 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:35,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:35,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1965868264, now seen corresponding path program 1 times [2022-07-21 09:47:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145868053] [2022-07-21 09:47:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:35,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:35,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360360120] [2022-07-21 09:47:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:35,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:35,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:35,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:35,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:47:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:36,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 09:47:36,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 09:47:36,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:36,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:36,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145868053] [2022-07-21 09:47:36,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360360120] [2022-07-21 09:47:36,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360360120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:36,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:36,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:47:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776637909] [2022-07-21 09:47:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:36,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:47:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:47:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:36,168 INFO L87 Difference]: Start difference. First operand 192 states and 241 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:36,196 INFO L93 Difference]: Finished difference Result 307 states and 387 transitions. [2022-07-21 09:47:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:47:36,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-07-21 09:47:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:36,198 INFO L225 Difference]: With dead ends: 307 [2022-07-21 09:47:36,198 INFO L226 Difference]: Without dead ends: 198 [2022-07-21 09:47:36,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:47:36,199 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 4 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:36,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 782 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-21 09:47:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-07-21 09:47:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 136 states have (on average 1.1985294117647058) internal successors, (163), 139 states have internal predecessors, (163), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 243 transitions. [2022-07-21 09:47:36,206 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 243 transitions. Word has length 179 [2022-07-21 09:47:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:36,207 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 243 transitions. [2022-07-21 09:47:36,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 243 transitions. [2022-07-21 09:47:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 09:47:36,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:36,208 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:36,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:36,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:47:36,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1941254556, now seen corresponding path program 1 times [2022-07-21 09:47:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:36,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026175201] [2022-07-21 09:47:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:36,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:36,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721449] [2022-07-21 09:47:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:36,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:36,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:36,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:36,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:47:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:36,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:47:36,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 09:47:36,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:36,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026175201] [2022-07-21 09:47:36,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:36,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721449] [2022-07-21 09:47:36,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:36,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:36,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639403592] [2022-07-21 09:47:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:36,959 INFO L87 Difference]: Start difference. First operand 194 states and 243 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:36,975 INFO L93 Difference]: Finished difference Result 222 states and 276 transitions. [2022-07-21 09:47:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:47:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-07-21 09:47:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:36,978 INFO L225 Difference]: With dead ends: 222 [2022-07-21 09:47:36,978 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 09:47:36,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:36,979 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:36,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 582 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 09:47:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-21 09:47:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 137 states have (on average 1.197080291970803) internal successors, (164), 139 states have internal predecessors, (164), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 244 transitions. [2022-07-21 09:47:36,986 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 244 transitions. Word has length 182 [2022-07-21 09:47:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:36,986 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 244 transitions. [2022-07-21 09:47:36,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 244 transitions. [2022-07-21 09:47:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 09:47:36,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:36,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:37,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:47:37,201 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash -101731212, now seen corresponding path program 2 times [2022-07-21 09:47:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:37,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459077983] [2022-07-21 09:47:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:37,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:37,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213473522] [2022-07-21 09:47:37,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:47:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:37,246 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:37,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:47:37,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:47:37,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:47:37,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:47:37,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 09:47:37,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459077983] [2022-07-21 09:47:37,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213473522] [2022-07-21 09:47:37,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213473522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:37,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:37,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:47:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275303853] [2022-07-21 09:47:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:47:37,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:47:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:37,829 INFO L87 Difference]: Start difference. First operand 195 states and 244 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:37,858 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-07-21 09:47:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:47:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-21 09:47:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:37,860 INFO L225 Difference]: With dead ends: 330 [2022-07-21 09:47:37,860 INFO L226 Difference]: Without dead ends: 211 [2022-07-21 09:47:37,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:47:37,863 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 9 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:37,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 788 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-21 09:47:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2022-07-21 09:47:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 147 states have (on average 1.1972789115646258) internal successors, (176), 149 states have internal predecessors, (176), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 256 transitions. [2022-07-21 09:47:37,875 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 256 transitions. Word has length 185 [2022-07-21 09:47:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:37,875 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 256 transitions. [2022-07-21 09:47:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 256 transitions. [2022-07-21 09:47:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 09:47:37,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:37,877 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:37,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:38,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 09:47:38,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 747347188, now seen corresponding path program 1 times [2022-07-21 09:47:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:38,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719078765] [2022-07-21 09:47:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:38,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:38,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596583703] [2022-07-21 09:47:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:38,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:38,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:38,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:47:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:38,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:47:38,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 09:47:38,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:38,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719078765] [2022-07-21 09:47:38,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:38,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596583703] [2022-07-21 09:47:38,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596583703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:38,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:38,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482306704] [2022-07-21 09:47:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:38,594 INFO L87 Difference]: Start difference. First operand 205 states and 256 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:38,612 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2022-07-21 09:47:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:47:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-21 09:47:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:38,614 INFO L225 Difference]: With dead ends: 332 [2022-07-21 09:47:38,614 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 09:47:38,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:38,615 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:38,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 582 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 09:47:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2022-07-21 09:47:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 244 transitions. [2022-07-21 09:47:38,625 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 244 transitions. Word has length 185 [2022-07-21 09:47:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 244 transitions. [2022-07-21 09:47:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 244 transitions. [2022-07-21 09:47:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 09:47:38,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:38,627 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:38,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:47:38,839 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 382427316, now seen corresponding path program 1 times [2022-07-21 09:47:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:38,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475663829] [2022-07-21 09:47:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:38,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:38,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923037945] [2022-07-21 09:47:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:38,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:38,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:47:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:47:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:47:39,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:39,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475663829] [2022-07-21 09:47:39,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923037945] [2022-07-21 09:47:39,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923037945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:39,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:39,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:47:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129798914] [2022-07-21 09:47:39,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:39,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:47:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:47:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:47:39,318 INFO L87 Difference]: Start difference. First operand 197 states and 244 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:39,335 INFO L93 Difference]: Finished difference Result 347 states and 435 transitions. [2022-07-21 09:47:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:47:39,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-07-21 09:47:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:39,337 INFO L225 Difference]: With dead ends: 347 [2022-07-21 09:47:39,337 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 09:47:39,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:47:39,338 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:39,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 586 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 09:47:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-07-21 09:47:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 141 states have internal predecessors, (163), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-21 09:47:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 243 transitions. [2022-07-21 09:47:39,344 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 243 transitions. Word has length 185 [2022-07-21 09:47:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:39,345 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 243 transitions. [2022-07-21 09:47:39,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:47:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 243 transitions. [2022-07-21 09:47:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-21 09:47:39,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:39,346 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:39,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:39,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:39,563 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash -908019048, now seen corresponding path program 1 times [2022-07-21 09:47:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:39,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278960181] [2022-07-21 09:47:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:39,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:39,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258787596] [2022-07-21 09:47:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:39,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:39,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:39,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:39,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:47:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:40,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-21 09:47:40,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:40,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:47:40,356 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:47:40,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:42,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:42,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:44,611 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_84| Int) (v_ArrVal_1769 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84| v_ArrVal_1769)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84|) 0))) (exists ((v_ArrVal_1770 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1770)))) is different from true [2022-07-21 09:47:44,936 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1772 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1772) |c_#memory_int|)) is different from true [2022-07-21 09:47:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 52 proven. 20 refuted. 2 times theorem prover too weak. 42 trivial. 3 not checked. [2022-07-21 09:47:45,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278960181] [2022-07-21 09:47:45,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258787596] [2022-07-21 09:47:45,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258787596] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:45,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:47:45,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-21 09:47:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401073080] [2022-07-21 09:47:45,944 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 09:47:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 09:47:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=803, Unknown=34, NotChecked=118, Total=1056 [2022-07-21 09:47:45,945 INFO L87 Difference]: Start difference. First operand 197 states and 243 transitions. Second operand has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-21 09:47:46,372 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1772 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1772) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_84| Int) (v_ArrVal_1769 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84| v_ArrVal_1769)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_84|) 0))) (exists ((v_ArrVal_1770 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1770)))) is different from true [2022-07-21 09:47:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:46,868 INFO L93 Difference]: Finished difference Result 395 states and 495 transitions. [2022-07-21 09:47:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:47:46,868 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) Word has length 187 [2022-07-21 09:47:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:46,870 INFO L225 Difference]: With dead ends: 395 [2022-07-21 09:47:46,870 INFO L226 Difference]: Without dead ends: 278 [2022-07-21 09:47:46,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 220 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=150, Invalid=1296, Unknown=48, NotChecked=228, Total=1722 [2022-07-21 09:47:46,871 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 94 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2325 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:46,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1697 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 989 Invalid, 0 Unknown, 2325 Unchecked, 0.6s Time] [2022-07-21 09:47:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-21 09:47:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 251. [2022-07-21 09:47:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 186 states have internal predecessors, (211), 40 states have call successors, (40), 22 states have call predecessors, (40), 29 states have return successors, (61), 43 states have call predecessors, (61), 39 states have call successors, (61) [2022-07-21 09:47:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 312 transitions. [2022-07-21 09:47:46,882 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 312 transitions. Word has length 187 [2022-07-21 09:47:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:46,882 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 312 transitions. [2022-07-21 09:47:46,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-21 09:47:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 312 transitions. [2022-07-21 09:47:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 09:47:46,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:46,884 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:46,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:47,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 09:47:47,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1925449391, now seen corresponding path program 1 times [2022-07-21 09:47:47,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:47,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196003917] [2022-07-21 09:47:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:47,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144110188] [2022-07-21 09:47:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:47,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:47,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:47,149 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:47,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:47:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:47,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-21 09:47:47,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:47,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:47:47,834 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:47:47,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:49,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:49,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:52,038 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1924 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1924) |c_#memory_int|)) is different from true [2022-07-21 09:47:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 3 not checked. [2022-07-21 09:47:52,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196003917] [2022-07-21 09:47:52,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144110188] [2022-07-21 09:47:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144110188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:52,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:47:52,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-21 09:47:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544770348] [2022-07-21 09:47:52,693 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:47:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:47:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=430, Unknown=7, NotChecked=42, Total=552 [2022-07-21 09:47:52,695 INFO L87 Difference]: Start difference. First operand 251 states and 312 transitions. Second operand has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-21 09:47:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:53,621 INFO L93 Difference]: Finished difference Result 481 states and 607 transitions. [2022-07-21 09:47:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:47:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) Word has length 193 [2022-07-21 09:47:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:53,627 INFO L225 Difference]: With dead ends: 481 [2022-07-21 09:47:53,627 INFO L226 Difference]: Without dead ends: 347 [2022-07-21 09:47:53,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=795, Unknown=18, NotChecked=58, Total=992 [2022-07-21 09:47:53,628 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 138 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 867 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:53,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1249 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1055 Invalid, 0 Unknown, 867 Unchecked, 0.7s Time] [2022-07-21 09:47:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-21 09:47:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 275. [2022-07-21 09:47:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 201 states have (on average 1.1741293532338308) internal successors, (236), 207 states have internal predecessors, (236), 41 states have call successors, (41), 23 states have call predecessors, (41), 32 states have return successors, (65), 45 states have call predecessors, (65), 40 states have call successors, (65) [2022-07-21 09:47:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 342 transitions. [2022-07-21 09:47:53,645 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 342 transitions. Word has length 193 [2022-07-21 09:47:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:53,645 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 342 transitions. [2022-07-21 09:47:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 11 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-21 09:47:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 342 transitions. [2022-07-21 09:47:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 09:47:53,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:53,647 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:53,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:53,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:53,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1752761233, now seen corresponding path program 1 times [2022-07-21 09:47:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:53,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713143059] [2022-07-21 09:47:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:53,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:53,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:53,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410646084] [2022-07-21 09:47:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:53,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:53,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:53,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:47:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 119 conjunts are in the unsatisfiable core [2022-07-21 09:47:54,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:54,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:47:54,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:54,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-21 09:47:54,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-07-21 09:47:54,753 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:47:54,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:54,805 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:47:54,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:47:56,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:56,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:47:59,425 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2086 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2086) |c_#memory_int|)) is different from true [2022-07-21 09:48:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 22 refuted. 2 times theorem prover too weak. 42 trivial. 3 not checked. [2022-07-21 09:48:00,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:00,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:00,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713143059] [2022-07-21 09:48:00,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:00,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410646084] [2022-07-21 09:48:00,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410646084] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:48:00,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:48:00,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-07-21 09:48:00,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907083637] [2022-07-21 09:48:00,610 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:00,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 09:48:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 09:48:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1026, Unknown=51, NotChecked=66, Total=1260 [2022-07-21 09:48:00,612 INFO L87 Difference]: Start difference. First operand 275 states and 342 transitions. Second operand has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-21 09:48:01,090 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_117| Int) (v_ArrVal_2083 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_117| v_ArrVal_2083)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_117|) 0))) (exists ((v_ArrVal_2086 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2086) |c_#memory_int|)) (exists ((v_ArrVal_2084 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2084)))) is different from true [2022-07-21 09:48:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:01,619 INFO L93 Difference]: Finished difference Result 471 states and 588 transitions. [2022-07-21 09:48:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 09:48:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 193 [2022-07-21 09:48:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:01,621 INFO L225 Difference]: With dead ends: 471 [2022-07-21 09:48:01,621 INFO L226 Difference]: Without dead ends: 339 [2022-07-21 09:48:01,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=167, Invalid=1584, Unknown=63, NotChecked=166, Total=1980 [2022-07-21 09:48:01,622 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 99 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2199 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:01,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1829 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 924 Invalid, 0 Unknown, 2199 Unchecked, 0.6s Time] [2022-07-21 09:48:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-21 09:48:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 312. [2022-07-21 09:48:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 229 states have (on average 1.1746724890829694) internal successors, (269), 236 states have internal predecessors, (269), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (74), 50 states have call predecessors, (74), 44 states have call successors, (74) [2022-07-21 09:48:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2022-07-21 09:48:01,636 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 193 [2022-07-21 09:48:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:01,637 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2022-07-21 09:48:01,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.935483870967742) internal successors, (122), 30 states have internal predecessors, (122), 14 states have call successors, (27), 8 states have call predecessors, (27), 13 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-21 09:48:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2022-07-21 09:48:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 09:48:01,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:01,639 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:01,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:01,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:01,859 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash -16710381, now seen corresponding path program 1 times [2022-07-21 09:48:01,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:01,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494990685] [2022-07-21 09:48:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:01,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:01,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:01,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304640861] [2022-07-21 09:48:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:01,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:01,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:01,904 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:01,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:48:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:03,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 09:48:03,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 09:48:03,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-21 09:48:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:03,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494990685] [2022-07-21 09:48:03,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:03,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304640861] [2022-07-21 09:48:03,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304640861] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:03,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:03,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-21 09:48:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321358579] [2022-07-21 09:48:03,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:48:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:48:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:48:03,746 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:48:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:03,863 INFO L93 Difference]: Finished difference Result 470 states and 604 transitions. [2022-07-21 09:48:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:48:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2022-07-21 09:48:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:03,865 INFO L225 Difference]: With dead ends: 470 [2022-07-21 09:48:03,865 INFO L226 Difference]: Without dead ends: 327 [2022-07-21 09:48:03,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:48:03,867 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 46 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 940 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-21 09:48:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 321. [2022-07-21 09:48:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 238 states have (on average 1.180672268907563) internal successors, (281), 245 states have internal predecessors, (281), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (74), 50 states have call predecessors, (74), 44 states have call successors, (74) [2022-07-21 09:48:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 400 transitions. [2022-07-21 09:48:03,880 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 400 transitions. Word has length 193 [2022-07-21 09:48:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:03,880 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 400 transitions. [2022-07-21 09:48:03,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:48:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 400 transitions. [2022-07-21 09:48:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 09:48:03,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:03,882 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:03,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:04,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:04,098 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1529453249, now seen corresponding path program 1 times [2022-07-21 09:48:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:04,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910101693] [2022-07-21 09:48:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:04,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:04,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035576188] [2022-07-21 09:48:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:04,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:04,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:04,138 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:04,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:48:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:04,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 09:48:04,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:04,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910101693] [2022-07-21 09:48:04,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035576188] [2022-07-21 09:48:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035576188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:04,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:04,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:48:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417198020] [2022-07-21 09:48:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:48:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:48:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:48:04,674 INFO L87 Difference]: Start difference. First operand 321 states and 400 transitions. Second operand has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-21 09:48:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:04,900 INFO L93 Difference]: Finished difference Result 471 states and 585 transitions. [2022-07-21 09:48:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:48:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 205 [2022-07-21 09:48:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:04,904 INFO L225 Difference]: With dead ends: 471 [2022-07-21 09:48:04,904 INFO L226 Difference]: Without dead ends: 319 [2022-07-21 09:48:04,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:48:04,905 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 233 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:04,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1043 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:48:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-21 09:48:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-07-21 09:48:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.1772151898734178) internal successors, (279), 243 states have internal predecessors, (279), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-21 09:48:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 397 transitions. [2022-07-21 09:48:04,916 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 397 transitions. Word has length 205 [2022-07-21 09:48:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 397 transitions. [2022-07-21 09:48:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-21 09:48:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 397 transitions. [2022-07-21 09:48:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 09:48:04,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:04,918 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:04,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:05,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2089690696, now seen corresponding path program 1 times [2022-07-21 09:48:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:05,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181758057] [2022-07-21 09:48:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:05,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:05,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:05,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352566705] [2022-07-21 09:48:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:05,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:05,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:05,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 09:48:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 09:48:05,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:48:05,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-21 09:48:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181758057] [2022-07-21 09:48:06,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352566705] [2022-07-21 09:48:06,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352566705] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:06,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:06,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 09:48:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064560259] [2022-07-21 09:48:06,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:48:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:48:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:48:06,008 INFO L87 Difference]: Start difference. First operand 319 states and 397 transitions. Second operand has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-21 09:48:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:06,112 INFO L93 Difference]: Finished difference Result 464 states and 573 transitions. [2022-07-21 09:48:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:48:06,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 226 [2022-07-21 09:48:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:06,121 INFO L225 Difference]: With dead ends: 464 [2022-07-21 09:48:06,121 INFO L226 Difference]: Without dead ends: 322 [2022-07-21 09:48:06,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:48:06,122 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 17 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:06,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1868 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-21 09:48:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2022-07-21 09:48:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.1757322175732217) internal successors, (281), 245 states have internal predecessors, (281), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-21 09:48:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 399 transitions. [2022-07-21 09:48:06,158 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 399 transitions. Word has length 226 [2022-07-21 09:48:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:06,159 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 399 transitions. [2022-07-21 09:48:06,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-21 09:48:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 399 transitions. [2022-07-21 09:48:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-21 09:48:06,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:06,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:06,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-21 09:48:06,376 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1940716689, now seen corresponding path program 1 times [2022-07-21 09:48:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129932430] [2022-07-21 09:48:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:06,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:06,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630926373] [2022-07-21 09:48:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:06,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:06,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:06,422 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:06,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 09:48:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-21 09:48:06,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:48:06,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-21 09:48:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129932430] [2022-07-21 09:48:07,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630926373] [2022-07-21 09:48:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630926373] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:07,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:07,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-07-21 09:48:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630637060] [2022-07-21 09:48:07,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:48:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:48:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:48:07,366 INFO L87 Difference]: Start difference. First operand 321 states and 399 transitions. Second operand has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-07-21 09:48:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:07,485 INFO L93 Difference]: Finished difference Result 468 states and 577 transitions. [2022-07-21 09:48:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:48:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) Word has length 222 [2022-07-21 09:48:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:07,489 INFO L225 Difference]: With dead ends: 468 [2022-07-21 09:48:07,489 INFO L226 Difference]: Without dead ends: 324 [2022-07-21 09:48:07,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:48:07,490 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 44 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1658 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-21 09:48:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2022-07-21 09:48:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 241 states have (on average 1.1742738589211619) internal successors, (283), 247 states have internal predecessors, (283), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-21 09:48:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 401 transitions. [2022-07-21 09:48:07,515 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 401 transitions. Word has length 222 [2022-07-21 09:48:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:07,516 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 401 transitions. [2022-07-21 09:48:07,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 9.307692307692308) internal successors, (121), 16 states have internal predecessors, (121), 7 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-07-21 09:48:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 401 transitions. [2022-07-21 09:48:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 09:48:07,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:07,518 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:07,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-21 09:48:07,736 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 783622132, now seen corresponding path program 2 times [2022-07-21 09:48:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:07,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092429293] [2022-07-21 09:48:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:07,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:07,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838373134] [2022-07-21 09:48:07,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:48:07,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:07,777 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:07,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 09:48:08,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:48:08,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:08,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 09:48:08,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:48:08,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-21 09:48:08,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:08,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092429293] [2022-07-21 09:48:08,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:08,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838373134] [2022-07-21 09:48:08,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838373134] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:08,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-21 09:48:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199099492] [2022-07-21 09:48:08,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:48:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:48:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:48:08,902 INFO L87 Difference]: Start difference. First operand 323 states and 401 transitions. Second operand has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-21 09:48:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:09,026 INFO L93 Difference]: Finished difference Result 472 states and 581 transitions. [2022-07-21 09:48:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:48:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 230 [2022-07-21 09:48:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:09,041 INFO L225 Difference]: With dead ends: 472 [2022-07-21 09:48:09,041 INFO L226 Difference]: Without dead ends: 326 [2022-07-21 09:48:09,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:48:09,042 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:09,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1691 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-21 09:48:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2022-07-21 09:48:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 243 states have (on average 1.1728395061728396) internal successors, (285), 249 states have internal predecessors, (285), 45 states have call successors, (45), 26 states have call predecessors, (45), 36 states have return successors, (73), 50 states have call predecessors, (73), 44 states have call successors, (73) [2022-07-21 09:48:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 403 transitions. [2022-07-21 09:48:09,083 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 403 transitions. Word has length 230 [2022-07-21 09:48:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:09,083 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 403 transitions. [2022-07-21 09:48:09,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 17 states have internal predecessors, (129), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-21 09:48:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 403 transitions. [2022-07-21 09:48:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 09:48:09,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:09,086 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:09,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:09,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:09,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:09,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1398750254, now seen corresponding path program 3 times [2022-07-21 09:48:09,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:09,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326497137] [2022-07-21 09:48:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:09,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:09,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431283851] [2022-07-21 09:48:09,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:48:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:09,352 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:09,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 09:48:09,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 09:48:09,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:09,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 09:48:09,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-21 09:48:09,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:09,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326497137] [2022-07-21 09:48:09,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:09,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431283851] [2022-07-21 09:48:09,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431283851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:09,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:09,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:48:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519600351] [2022-07-21 09:48:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:48:09,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:48:09,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:48:09,961 INFO L87 Difference]: Start difference. First operand 325 states and 403 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 09:48:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:10,189 INFO L93 Difference]: Finished difference Result 480 states and 600 transitions. [2022-07-21 09:48:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:48:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2022-07-21 09:48:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:10,191 INFO L225 Difference]: With dead ends: 480 [2022-07-21 09:48:10,191 INFO L226 Difference]: Without dead ends: 334 [2022-07-21 09:48:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:48:10,192 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 15 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2730 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:48:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-21 09:48:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2022-07-21 09:48:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 247 states have (on average 1.174089068825911) internal successors, (290), 254 states have internal predecessors, (290), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-21 09:48:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 410 transitions. [2022-07-21 09:48:10,204 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 410 transitions. Word has length 232 [2022-07-21 09:48:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:10,205 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 410 transitions. [2022-07-21 09:48:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 11 states have internal predecessors, (123), 3 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (27), 6 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 09:48:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 410 transitions. [2022-07-21 09:48:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 09:48:10,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:10,207 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:10,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:10,427 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 720148011, now seen corresponding path program 2 times [2022-07-21 09:48:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:10,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641900850] [2022-07-21 09:48:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:10,494 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441214192] [2022-07-21 09:48:10,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:48:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:10,496 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 09:48:12,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:48:12,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 09:48:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:48:12,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-21 09:48:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641900850] [2022-07-21 09:48:12,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441214192] [2022-07-21 09:48:12,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441214192] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:12,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:12,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 09:48:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147286778] [2022-07-21 09:48:12,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:12,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:48:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:48:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:48:12,940 INFO L87 Difference]: Start difference. First operand 330 states and 410 transitions. Second operand has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-21 09:48:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:13,109 INFO L93 Difference]: Finished difference Result 486 states and 596 transitions. [2022-07-21 09:48:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:48:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 226 [2022-07-21 09:48:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:13,111 INFO L225 Difference]: With dead ends: 486 [2022-07-21 09:48:13,111 INFO L226 Difference]: Without dead ends: 333 [2022-07-21 09:48:13,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:48:13,112 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 50 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1876 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-21 09:48:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2022-07-21 09:48:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 249 states have (on average 1.1726907630522088) internal successors, (292), 256 states have internal predecessors, (292), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-21 09:48:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 412 transitions. [2022-07-21 09:48:13,124 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 412 transitions. Word has length 226 [2022-07-21 09:48:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:13,124 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 412 transitions. [2022-07-21 09:48:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-21 09:48:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 412 transitions. [2022-07-21 09:48:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 09:48:13,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:13,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:13,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-21 09:48:13,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 09:48:13,340 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2027128905, now seen corresponding path program 3 times [2022-07-21 09:48:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454152730] [2022-07-21 09:48:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:13,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860019272] [2022-07-21 09:48:13,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:48:13,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:13,406 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:13,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-21 09:49:36,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 09:49:36,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-21 09:49:36,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 28 proven. 47 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 09:49:36,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-21 09:49:37,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:37,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454152730] [2022-07-21 09:49:37,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860019272] [2022-07-21 09:49:37,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860019272] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:37,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:37,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 23 [2022-07-21 09:49:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440033061] [2022-07-21 09:49:37,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:37,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:49:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:49:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:49:37,145 INFO L87 Difference]: Start difference. First operand 332 states and 412 transitions. Second operand has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 09:49:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:38,229 INFO L93 Difference]: Finished difference Result 532 states and 701 transitions. [2022-07-21 09:49:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:49:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 228 [2022-07-21 09:49:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:38,231 INFO L225 Difference]: With dead ends: 532 [2022-07-21 09:49:38,231 INFO L226 Difference]: Without dead ends: 369 [2022-07-21 09:49:38,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 09:49:38,233 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 142 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:38,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1901 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:49:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-21 09:49:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 350. [2022-07-21 09:49:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 267 states have (on average 1.1835205992509363) internal successors, (316), 274 states have internal predecessors, (316), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-21 09:49:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 436 transitions. [2022-07-21 09:49:38,247 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 436 transitions. Word has length 228 [2022-07-21 09:49:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:38,247 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 436 transitions. [2022-07-21 09:49:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.818181818181818) internal successors, (150), 23 states have internal predecessors, (150), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 09:49:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 436 transitions. [2022-07-21 09:49:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-07-21 09:49:38,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:38,250 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 10, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:38,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:38,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 09:49:38,460 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1281085344, now seen corresponding path program 1 times [2022-07-21 09:49:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:38,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402472092] [2022-07-21 09:49:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:38,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303385237] [2022-07-21 09:49:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:38,509 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:38,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-21 09:49:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-21 09:49:39,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 163 proven. 25 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-21 09:49:39,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-07-21 09:49:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:39,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402472092] [2022-07-21 09:49:39,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:39,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303385237] [2022-07-21 09:49:39,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303385237] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:39,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:39,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-21 09:49:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166329980] [2022-07-21 09:49:39,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:49:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:49:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:49:39,679 INFO L87 Difference]: Start difference. First operand 350 states and 436 transitions. Second operand has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-21 09:49:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:39,890 INFO L93 Difference]: Finished difference Result 526 states and 648 transitions. [2022-07-21 09:49:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:49:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 295 [2022-07-21 09:49:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:39,892 INFO L225 Difference]: With dead ends: 526 [2022-07-21 09:49:39,892 INFO L226 Difference]: Without dead ends: 353 [2022-07-21 09:49:39,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:49:39,896 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 41 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1886 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:49:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-21 09:49:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352. [2022-07-21 09:49:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 269 states have (on average 1.1821561338289963) internal successors, (318), 276 states have internal predecessors, (318), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-21 09:49:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 438 transitions. [2022-07-21 09:49:39,910 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 438 transitions. Word has length 295 [2022-07-21 09:49:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:39,911 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 438 transitions. [2022-07-21 09:49:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.68421052631579) internal successors, (165), 21 states have internal predecessors, (165), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-21 09:49:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 438 transitions. [2022-07-21 09:49:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-21 09:49:39,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:39,913 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:39,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 09:49:40,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -949690780, now seen corresponding path program 2 times [2022-07-21 09:49:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:40,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669675029] [2022-07-21 09:49:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:40,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:40,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670642949] [2022-07-21 09:49:40,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:49:40,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:40,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:40,177 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:40,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-21 09:49:41,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:49:41,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:41,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-21 09:49:41,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-07-21 09:49:41,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-07-21 09:49:41,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:41,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669675029] [2022-07-21 09:49:41,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:41,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670642949] [2022-07-21 09:49:41,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670642949] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:41,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:41,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-21 09:49:41,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438077448] [2022-07-21 09:49:41,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:49:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:41,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:49:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:49:41,827 INFO L87 Difference]: Start difference. First operand 352 states and 438 transitions. Second operand has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-21 09:49:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:42,070 INFO L93 Difference]: Finished difference Result 530 states and 652 transitions. [2022-07-21 09:49:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:49:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 299 [2022-07-21 09:49:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:42,075 INFO L225 Difference]: With dead ends: 530 [2022-07-21 09:49:42,075 INFO L226 Difference]: Without dead ends: 355 [2022-07-21 09:49:42,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:49:42,077 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:42,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2254 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:49:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-21 09:49:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2022-07-21 09:49:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 271 states have (on average 1.1808118081180812) internal successors, (320), 278 states have internal predecessors, (320), 45 states have call successors, (45), 26 states have call predecessors, (45), 37 states have return successors, (75), 50 states have call predecessors, (75), 44 states have call successors, (75) [2022-07-21 09:49:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 440 transitions. [2022-07-21 09:49:42,089 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 440 transitions. Word has length 299 [2022-07-21 09:49:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:42,090 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 440 transitions. [2022-07-21 09:49:42,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-21 09:49:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 440 transitions. [2022-07-21 09:49:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-21 09:49:42,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:42,092 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:42,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:42,313 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1955674728, now seen corresponding path program 3 times [2022-07-21 09:49:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935151263] [2022-07-21 09:49:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:42,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:42,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665725104] [2022-07-21 09:49:42,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:49:42,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:42,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:42,377 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:42,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-21 09:49:43,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-21 09:49:43,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:43,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-21 09:49:43,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 77 proven. 40 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-07-21 09:49:43,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:44,572 INFO L356 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-07-21 09:49:44,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 69 [2022-07-21 09:49:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 59 proven. 50 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-07-21 09:49:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935151263] [2022-07-21 09:49:44,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665725104] [2022-07-21 09:49:44,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665725104] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:44,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:44,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 19 [2022-07-21 09:49:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762792705] [2022-07-21 09:49:44,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:49:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:49:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:49:44,785 INFO L87 Difference]: Start difference. First operand 354 states and 440 transitions. Second operand has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) [2022-07-21 09:49:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:46,105 INFO L93 Difference]: Finished difference Result 469 states and 604 transitions. [2022-07-21 09:49:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:49:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) Word has length 303 [2022-07-21 09:49:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:46,108 INFO L225 Difference]: With dead ends: 469 [2022-07-21 09:49:46,108 INFO L226 Difference]: Without dead ends: 415 [2022-07-21 09:49:46,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 587 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:49:46,109 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 236 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:46,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2039 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 09:49:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-21 09:49:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 373. [2022-07-21 09:49:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 283 states have (on average 1.1802120141342756) internal successors, (334), 291 states have internal predecessors, (334), 50 states have call successors, (50), 26 states have call predecessors, (50), 39 states have return successors, (89), 56 states have call predecessors, (89), 49 states have call successors, (89) [2022-07-21 09:49:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 473 transitions. [2022-07-21 09:49:46,123 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 473 transitions. Word has length 303 [2022-07-21 09:49:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:46,123 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 473 transitions. [2022-07-21 09:49:46,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.4375) internal successors, (135), 17 states have internal predecessors, (135), 9 states have call successors, (37), 4 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 9 states have call successors, (35) [2022-07-21 09:49:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 473 transitions. [2022-07-21 09:49:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-21 09:49:46,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:46,126 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:46,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-21 09:49:46,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:46,339 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1301159256, now seen corresponding path program 1 times [2022-07-21 09:49:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825264493] [2022-07-21 09:49:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:46,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:46,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:46,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876768598] [2022-07-21 09:49:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:46,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:46,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:46,401 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:46,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-21 09:49:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:48,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 442 conjunts are in the unsatisfiable core [2022-07-21 09:49:48,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:48,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:48,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:49:48,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-21 09:49:48,809 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:49:48,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-21 09:49:48,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 09:49:48,859 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-21 09:49:48,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-21 09:49:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:48,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:49:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:48,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-07-21 09:49:49,126 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5006 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5006) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5005 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5005) |c_#memory_$Pointer$.base|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_518| Int) (v_ArrVal_5004 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_518| v_ArrVal_5004))))) is different from true [2022-07-21 09:49:51,024 INFO L356 Elim1Store]: treesize reduction 400, result has 21.7 percent of original size [2022-07-21 09:49:51,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 439 treesize of output 513 [2022-07-21 09:49:51,053 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:49:51,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-07-21 09:49:51,086 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:49:51,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-07-21 09:49:53,022 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-21 09:49:53,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 37 [2022-07-21 09:49:53,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:53,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:53,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:53,126 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-21 09:49:53,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 37 [2022-07-21 09:50:58,707 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:51:43,403 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)