./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 19:18:32,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 19:18:32,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 19:18:32,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 19:18:32,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 19:18:32,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 19:18:32,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 19:18:32,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 19:18:32,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 19:18:32,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 19:18:32,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 19:18:32,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 19:18:32,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 19:18:32,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 19:18:32,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 19:18:32,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 19:18:32,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 19:18:32,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 19:18:32,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 19:18:32,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 19:18:32,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 19:18:32,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 19:18:32,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 19:18:32,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 19:18:32,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 19:18:32,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 19:18:32,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 19:18:32,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 19:18:32,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 19:18:32,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 19:18:32,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 19:18:32,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 19:18:32,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 19:18:32,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 19:18:32,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 19:18:32,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 19:18:32,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 19:18:32,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 19:18:32,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 19:18:32,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 19:18:32,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 19:18:32,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 19:18:32,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 19:18:32,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 19:18:32,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 19:18:32,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 19:18:32,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 19:18:32,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 19:18:32,624 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 19:18:32,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 19:18:32,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 19:18:32,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 19:18:32,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 19:18:32,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 19:18:32,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 19:18:32,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 19:18:32,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 19:18:32,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 19:18:32,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 19:18:32,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:18:32,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 19:18:32,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 19:18:32,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 19:18:32,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 19:18:32,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 19:18:32,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 19:18:32,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-22 19:18:32,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 19:18:32,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 19:18:32,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 19:18:32,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 19:18:32,885 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 19:18:32,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-22 19:18:32,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f94974e2/1add73637adb455ba4a721a2a3a90bdf/FLAG06355ae09 [2021-11-22 19:18:33,534 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 19:18:33,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-22 19:18:33,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f94974e2/1add73637adb455ba4a721a2a3a90bdf/FLAG06355ae09 [2021-11-22 19:18:33,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f94974e2/1add73637adb455ba4a721a2a3a90bdf [2021-11-22 19:18:33,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 19:18:33,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 19:18:33,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 19:18:33,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 19:18:33,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 19:18:33,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:18:33" (1/1) ... [2021-11-22 19:18:33,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae21ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:33, skipping insertion in model container [2021-11-22 19:18:33,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:18:33" (1/1) ... [2021-11-22 19:18:34,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 19:18:34,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 19:18:34,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-22 19:18:34,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-22 19:18:34,719 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:18:34,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:34,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:18:34,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:18:34,988 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:18:34,988 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:18:34,989 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:18:34,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:18:34,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:18:34,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:18:34,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:18:34,997 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:18:35,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:18:35,194 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 19:18:35,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-22 19:18:35,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-22 19:18:35,250 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:18:35,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,311 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:18:35,311 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:18:35,312 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:18:35,312 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:18:35,313 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:18:35,314 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:18:35,315 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:18:35,315 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:18:35,316 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:18:35,316 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:18:35,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:18:35,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:18:35,535 INFO L208 MainTranslator]: Completed translation [2021-11-22 19:18:35,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35 WrapperNode [2021-11-22 19:18:35,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 19:18:35,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 19:18:35,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 19:18:35,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 19:18:35,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,690 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 654, calls inlined = 256, statements flattened = 3493 [2021-11-22 19:18:35,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 19:18:35,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 19:18:35,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 19:18:35,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 19:18:35,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 19:18:35,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 19:18:35,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 19:18:35,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 19:18:35,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (1/1) ... [2021-11-22 19:18:35,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:18:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:35,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 19:18:35,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 19:18:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 19:18:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 19:18:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 19:18:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 19:18:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 19:18:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 19:18:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 19:18:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 19:18:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 19:18:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 19:18:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 19:18:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 19:18:36,246 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 19:18:36,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 19:18:37,472 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 19:18:37,481 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 19:18:37,481 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 19:18:37,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:18:37 BoogieIcfgContainer [2021-11-22 19:18:37,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 19:18:37,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 19:18:37,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 19:18:37,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 19:18:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:18:33" (1/3) ... [2021-11-22 19:18:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26325b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:18:37, skipping insertion in model container [2021-11-22 19:18:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:18:35" (2/3) ... [2021-11-22 19:18:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26325b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:18:37, skipping insertion in model container [2021-11-22 19:18:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:18:37" (3/3) ... [2021-11-22 19:18:37,488 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-11-22 19:18:37,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 19:18:37,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-22 19:18:37,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 19:18:37,530 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 19:18:37,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-22 19:18:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 578 states have (on average 1.4031141868512111) internal successors, (811), 601 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 19:18:37,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:37,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:37,554 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1173181215, now seen corresponding path program 1 times [2021-11-22 19:18:37,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805806409] [2021-11-22 19:18:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:37,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:37,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805806409] [2021-11-22 19:18:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805806409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:37,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:37,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 19:18:37,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555251890] [2021-11-22 19:18:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:37,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 19:18:37,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 19:18:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:18:37,874 INFO L87 Difference]: Start difference. First operand has 602 states, 578 states have (on average 1.4031141868512111) internal successors, (811), 601 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:37,922 INFO L93 Difference]: Finished difference Result 1200 states and 1617 transitions. [2021-11-22 19:18:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 19:18:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 19:18:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:37,933 INFO L225 Difference]: With dead ends: 1200 [2021-11-22 19:18:37,934 INFO L226 Difference]: Without dead ends: 597 [2021-11-22 19:18:37,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:18:37,942 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:37,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:18:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-22 19:18:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-22 19:18:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 574 states have (on average 1.3083623693379791) internal successors, (751), 596 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 751 transitions. [2021-11-22 19:18:38,008 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 751 transitions. Word has length 53 [2021-11-22 19:18:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 751 transitions. [2021-11-22 19:18:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 751 transitions. [2021-11-22 19:18:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 19:18:38,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:38,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:38,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 19:18:38,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:38,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1286691189, now seen corresponding path program 1 times [2021-11-22 19:18:38,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823572951] [2021-11-22 19:18:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:38,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:38,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:38,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823572951] [2021-11-22 19:18:38,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823572951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:38,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:38,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 19:18:38,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084550655] [2021-11-22 19:18:38,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:38,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 19:18:38,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 19:18:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:18:38,192 INFO L87 Difference]: Start difference. First operand 597 states and 751 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:38,227 INFO L93 Difference]: Finished difference Result 1181 states and 1487 transitions. [2021-11-22 19:18:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 19:18:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 19:18:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:38,230 INFO L225 Difference]: With dead ends: 1181 [2021-11-22 19:18:38,231 INFO L226 Difference]: Without dead ends: 598 [2021-11-22 19:18:38,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:18:38,233 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 0 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:38,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1496 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:18:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-22 19:18:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-22 19:18:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 575 states have (on average 1.3078260869565217) internal successors, (752), 597 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 752 transitions. [2021-11-22 19:18:38,243 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 752 transitions. Word has length 53 [2021-11-22 19:18:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:38,243 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 752 transitions. [2021-11-22 19:18:38,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 752 transitions. [2021-11-22 19:18:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 19:18:38,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:38,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:38,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 19:18:38,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1069114061, now seen corresponding path program 1 times [2021-11-22 19:18:38,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584399242] [2021-11-22 19:18:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:38,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:38,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:38,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584399242] [2021-11-22 19:18:38,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584399242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:38,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:38,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:18:38,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143835994] [2021-11-22 19:18:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:38,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:18:38,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:18:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:18:38,360 INFO L87 Difference]: Start difference. First operand 598 states and 752 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:38,689 INFO L93 Difference]: Finished difference Result 1164 states and 1464 transitions. [2021-11-22 19:18:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:18:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 19:18:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:38,692 INFO L225 Difference]: With dead ends: 1164 [2021-11-22 19:18:38,692 INFO L226 Difference]: Without dead ends: 598 [2021-11-22 19:18:38,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:18:38,693 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 734 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:38,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1182 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:18:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-22 19:18:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-22 19:18:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 575 states have (on average 1.3008695652173914) internal successors, (748), 597 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 748 transitions. [2021-11-22 19:18:38,705 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 748 transitions. Word has length 53 [2021-11-22 19:18:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 748 transitions. [2021-11-22 19:18:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 748 transitions. [2021-11-22 19:18:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:18:38,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:38,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:38,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 19:18:38,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1075379847, now seen corresponding path program 1 times [2021-11-22 19:18:38,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:38,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804168829] [2021-11-22 19:18:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:38,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:38,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:38,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18046317] [2021-11-22 19:18:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:38,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:38,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:38,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:38,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 19:18:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:39,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 19:18:39,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:39,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:39,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804168829] [2021-11-22 19:18:39,343 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18046317] [2021-11-22 19:18:39,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18046317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:39,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:39,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:18:39,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398212753] [2021-11-22 19:18:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:39,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:18:39,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:18:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:18:39,345 INFO L87 Difference]: Start difference. First operand 598 states and 748 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:39,722 INFO L93 Difference]: Finished difference Result 1185 states and 1480 transitions. [2021-11-22 19:18:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:18:39,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:18:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:39,726 INFO L225 Difference]: With dead ends: 1185 [2021-11-22 19:18:39,726 INFO L226 Difference]: Without dead ends: 695 [2021-11-22 19:18:39,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:18:39,727 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 3287 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:39,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3287 Valid, 1321 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:18:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-11-22 19:18:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 598. [2021-11-22 19:18:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 575 states have (on average 1.2921739130434782) internal successors, (743), 597 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 743 transitions. [2021-11-22 19:18:39,738 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 743 transitions. Word has length 77 [2021-11-22 19:18:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:39,738 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 743 transitions. [2021-11-22 19:18:39,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 743 transitions. [2021-11-22 19:18:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 19:18:39,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:39,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:39,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:39,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:39,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -581583421, now seen corresponding path program 1 times [2021-11-22 19:18:39,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:39,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126542301] [2021-11-22 19:18:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:39,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:40,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:40,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83372703] [2021-11-22 19:18:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:40,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:40,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:40,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 19:18:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:40,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 19:18:40,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:40,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:40,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126542301] [2021-11-22 19:18:40,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83372703] [2021-11-22 19:18:40,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83372703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:40,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:40,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:18:40,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762140970] [2021-11-22 19:18:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:40,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:18:40,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:18:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:18:40,480 INFO L87 Difference]: Start difference. First operand 598 states and 743 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:40,818 INFO L93 Difference]: Finished difference Result 1285 states and 1616 transitions. [2021-11-22 19:18:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:18:40,819 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 19:18:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:40,821 INFO L225 Difference]: With dead ends: 1285 [2021-11-22 19:18:40,821 INFO L226 Difference]: Without dead ends: 718 [2021-11-22 19:18:40,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:18:40,822 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 180 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:40,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 1966 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:18:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-22 19:18:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 646. [2021-11-22 19:18:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 623 states have (on average 1.2696629213483146) internal successors, (791), 645 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 791 transitions. [2021-11-22 19:18:40,837 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 791 transitions. Word has length 93 [2021-11-22 19:18:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:40,837 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 791 transitions. [2021-11-22 19:18:40,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 791 transitions. [2021-11-22 19:18:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 19:18:40,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:40,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:40,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:41,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:41,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1107360321, now seen corresponding path program 1 times [2021-11-22 19:18:41,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:41,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359543139] [2021-11-22 19:18:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:41,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:41,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:41,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268468148] [2021-11-22 19:18:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:41,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:41,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:41,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 19:18:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-22 19:18:41,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:41,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:41,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359543139] [2021-11-22 19:18:41,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268468148] [2021-11-22 19:18:41,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268468148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:41,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:41,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:18:41,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464396397] [2021-11-22 19:18:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:41,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:18:41,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:18:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:18:41,594 INFO L87 Difference]: Start difference. First operand 646 states and 791 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:41,685 INFO L93 Difference]: Finished difference Result 1220 states and 1496 transitions. [2021-11-22 19:18:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:18:41,686 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 19:18:41,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:41,688 INFO L225 Difference]: With dead ends: 1220 [2021-11-22 19:18:41,694 INFO L226 Difference]: Without dead ends: 646 [2021-11-22 19:18:41,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:18:41,695 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:41,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2155 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:18:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-11-22 19:18:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2021-11-22 19:18:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 623 states have (on average 1.2680577849117174) internal successors, (790), 645 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 790 transitions. [2021-11-22 19:18:41,743 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 790 transitions. Word has length 93 [2021-11-22 19:18:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:41,744 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 790 transitions. [2021-11-22 19:18:41,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 790 transitions. [2021-11-22 19:18:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 19:18:41,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:41,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:41,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:41,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:41,945 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash -831801725, now seen corresponding path program 1 times [2021-11-22 19:18:41,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:41,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788577503] [2021-11-22 19:18:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:41,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:41,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:41,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582651519] [2021-11-22 19:18:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:41,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:41,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:41,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 19:18:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 19:18:42,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:42,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:42,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788577503] [2021-11-22 19:18:42,622 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582651519] [2021-11-22 19:18:42,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582651519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:42,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:42,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:18:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668933242] [2021-11-22 19:18:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:42,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:18:42,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:18:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:18:42,624 INFO L87 Difference]: Start difference. First operand 646 states and 790 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:42,683 INFO L93 Difference]: Finished difference Result 1538 states and 1880 transitions. [2021-11-22 19:18:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:18:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 19:18:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:42,687 INFO L225 Difference]: With dead ends: 1538 [2021-11-22 19:18:42,687 INFO L226 Difference]: Without dead ends: 938 [2021-11-22 19:18:42,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:18:42,688 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 373 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:42,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 4798 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:18:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-22 19:18:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 646. [2021-11-22 19:18:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 623 states have (on average 1.2664526484751204) internal successors, (789), 645 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 789 transitions. [2021-11-22 19:18:42,702 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 789 transitions. Word has length 93 [2021-11-22 19:18:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:42,702 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 789 transitions. [2021-11-22 19:18:42,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 789 transitions. [2021-11-22 19:18:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 19:18:42,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:42,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:42,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:42,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:42,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1678729548, now seen corresponding path program 1 times [2021-11-22 19:18:42,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:42,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437721892] [2021-11-22 19:18:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:42,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:42,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:42,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293607552] [2021-11-22 19:18:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:42,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:42,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:43,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 19:18:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 19:18:43,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:43,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:43,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:43,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437721892] [2021-11-22 19:18:43,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:43,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293607552] [2021-11-22 19:18:43,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293607552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:43,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:43,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:18:43,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708259441] [2021-11-22 19:18:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:43,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:18:43,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:18:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:18:43,584 INFO L87 Difference]: Start difference. First operand 646 states and 789 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:43,705 INFO L93 Difference]: Finished difference Result 1515 states and 1850 transitions. [2021-11-22 19:18:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 19:18:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 19:18:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:43,708 INFO L225 Difference]: With dead ends: 1515 [2021-11-22 19:18:43,708 INFO L226 Difference]: Without dead ends: 963 [2021-11-22 19:18:43,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:18:43,709 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 3561 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:43,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3561 Valid, 3028 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:18:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-22 19:18:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 646. [2021-11-22 19:18:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 623 states have (on average 1.2648475120385232) internal successors, (788), 645 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 788 transitions. [2021-11-22 19:18:43,726 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 788 transitions. Word has length 96 [2021-11-22 19:18:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:43,726 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 788 transitions. [2021-11-22 19:18:43,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 788 transitions. [2021-11-22 19:18:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 19:18:43,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:43,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:43,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 19:18:43,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:43,948 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:43,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1953489162, now seen corresponding path program 1 times [2021-11-22 19:18:43,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:43,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725800] [2021-11-22 19:18:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:43,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:44,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:44,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89979440] [2021-11-22 19:18:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:44,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:44,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:44,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:44,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 19:18:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:44,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-22 19:18:44,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:44,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-22 19:18:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:44,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:44,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725800] [2021-11-22 19:18:44,757 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:44,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89979440] [2021-11-22 19:18:44,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89979440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:44,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:44,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:18:44,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107627253] [2021-11-22 19:18:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:44,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:18:44,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:18:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:18:44,758 INFO L87 Difference]: Start difference. First operand 646 states and 788 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:46,207 INFO L93 Difference]: Finished difference Result 1872 states and 2283 transitions. [2021-11-22 19:18:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 19:18:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 19:18:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:46,211 INFO L225 Difference]: With dead ends: 1872 [2021-11-22 19:18:46,211 INFO L226 Difference]: Without dead ends: 1259 [2021-11-22 19:18:46,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:18:46,212 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 1458 mSDsluCounter, 4346 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:46,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 5552 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 19:18:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-22 19:18:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1154. [2021-11-22 19:18:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1131 states have (on average 1.2758620689655173) internal successors, (1443), 1153 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1443 transitions. [2021-11-22 19:18:46,252 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1443 transitions. Word has length 96 [2021-11-22 19:18:46,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:46,252 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 1443 transitions. [2021-11-22 19:18:46,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1443 transitions. [2021-11-22 19:18:46,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 19:18:46,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:46,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:46,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:46,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:46,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:46,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:46,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1143199088, now seen corresponding path program 1 times [2021-11-22 19:18:46,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:46,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126358735] [2021-11-22 19:18:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:46,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:46,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733917893] [2021-11-22 19:18:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:46,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:46,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:46,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:46,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 19:18:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:46,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-22 19:18:46,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:46,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:18:47,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:18:47,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:18:47,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:18:47,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:18:47,171 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:18:47,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:18:47,236 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:18:47,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-22 19:18:47,246 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:18:47,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 19:18:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:47,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:47,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126358735] [2021-11-22 19:18:47,391 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733917893] [2021-11-22 19:18:47,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733917893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:47,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:47,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:18:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916203806] [2021-11-22 19:18:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:47,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:18:47,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:18:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:18:47,395 INFO L87 Difference]: Start difference. First operand 1154 states and 1443 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:48,604 INFO L93 Difference]: Finished difference Result 2395 states and 2985 transitions. [2021-11-22 19:18:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 19:18:48,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 19:18:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:48,608 INFO L225 Difference]: With dead ends: 2395 [2021-11-22 19:18:48,608 INFO L226 Difference]: Without dead ends: 1268 [2021-11-22 19:18:48,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:18:48,609 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 123 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:48,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 4487 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 19:18:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-11-22 19:18:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1214. [2021-11-22 19:18:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1191 states have (on average 1.2686817800167927) internal successors, (1511), 1213 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1511 transitions. [2021-11-22 19:18:48,634 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1511 transitions. Word has length 98 [2021-11-22 19:18:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:48,635 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1511 transitions. [2021-11-22 19:18:48,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1511 transitions. [2021-11-22 19:18:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 19:18:48,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:48,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:48,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:48,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:48,846 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1585010258, now seen corresponding path program 1 times [2021-11-22 19:18:48,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:48,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925347513] [2021-11-22 19:18:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:48,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:48,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:48,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287203499] [2021-11-22 19:18:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:48,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:48,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:48,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 19:18:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:49,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 19:18:49,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:49,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:49,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:49,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925347513] [2021-11-22 19:18:49,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287203499] [2021-11-22 19:18:49,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287203499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:49,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:49,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:18:49,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073330001] [2021-11-22 19:18:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:49,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:18:49,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:18:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:18:49,512 INFO L87 Difference]: Start difference. First operand 1214 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:50,386 INFO L93 Difference]: Finished difference Result 2963 states and 3669 transitions. [2021-11-22 19:18:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:18:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 19:18:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:50,391 INFO L225 Difference]: With dead ends: 2963 [2021-11-22 19:18:50,391 INFO L226 Difference]: Without dead ends: 1791 [2021-11-22 19:18:50,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:18:50,393 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 432 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:50,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 2863 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:18:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-22 19:18:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1260. [2021-11-22 19:18:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1237 states have (on average 1.2562651576394503) internal successors, (1554), 1259 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1554 transitions. [2021-11-22 19:18:50,424 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1554 transitions. Word has length 98 [2021-11-22 19:18:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:50,424 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1554 transitions. [2021-11-22 19:18:50,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1554 transitions. [2021-11-22 19:18:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 19:18:50,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:50,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:50,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:50,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 19:18:50,645 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1344770512, now seen corresponding path program 1 times [2021-11-22 19:18:50,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:50,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568170851] [2021-11-22 19:18:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:50,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:50,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654191288] [2021-11-22 19:18:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:50,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:50,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:50,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:50,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 19:18:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:51,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-22 19:18:51,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:51,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-11-22 19:18:51,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-22 19:18:51,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-22 19:18:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:51,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:51,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:51,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568170851] [2021-11-22 19:18:51,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:51,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654191288] [2021-11-22 19:18:51,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654191288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:51,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:51,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:18:51,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492042960] [2021-11-22 19:18:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:18:51,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:18:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:18:51,667 INFO L87 Difference]: Start difference. First operand 1260 states and 1554 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:55,757 INFO L93 Difference]: Finished difference Result 5926 states and 7325 transitions. [2021-11-22 19:18:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 19:18:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 19:18:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:55,769 INFO L225 Difference]: With dead ends: 5926 [2021-11-22 19:18:55,769 INFO L226 Difference]: Without dead ends: 4748 [2021-11-22 19:18:55,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:18:55,771 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 3030 mSDsluCounter, 8519 mSDsCounter, 0 mSdLazyCounter, 4658 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3030 SdHoareTripleChecker+Valid, 10895 SdHoareTripleChecker+Invalid, 4725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:55,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3030 Valid, 10895 Invalid, 4725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4658 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 19:18:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2021-11-22 19:18:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 1746. [2021-11-22 19:18:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1723 states have (on average 1.26523505513639) internal successors, (2180), 1745 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2180 transitions. [2021-11-22 19:18:55,843 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2180 transitions. Word has length 98 [2021-11-22 19:18:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:55,843 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 2180 transitions. [2021-11-22 19:18:55,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2180 transitions. [2021-11-22 19:18:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:18:55,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:55,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:55,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:56,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:56,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1665784922, now seen corresponding path program 1 times [2021-11-22 19:18:56,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:56,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645423216] [2021-11-22 19:18:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:56,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:56,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:56,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645768207] [2021-11-22 19:18:56,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:56,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:56,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:56,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:56,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 19:18:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:18:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-22 19:18:56,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:18:56,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:18:56,675 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:18:56,675 INFO L388 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 17 treesize of output 21 [2021-11-22 19:18:56,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-22 19:18:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:18:56,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-11-22 19:18:56,824 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:18:56,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:18:56,859 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:18:56,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-22 19:18:57,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-22 19:18:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:18:57,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:18:57,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:18:57,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645423216] [2021-11-22 19:18:57,155 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:18:57,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645768207] [2021-11-22 19:18:57,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645768207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:18:57,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:18:57,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:18:57,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394626963] [2021-11-22 19:18:57,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:18:57,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:18:57,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:18:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:18:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:18:57,158 INFO L87 Difference]: Start difference. First operand 1746 states and 2180 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:18:59,516 INFO L93 Difference]: Finished difference Result 4731 states and 5864 transitions. [2021-11-22 19:18:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 19:18:59,516 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:18:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:18:59,542 INFO L225 Difference]: With dead ends: 4731 [2021-11-22 19:18:59,543 INFO L226 Difference]: Without dead ends: 3110 [2021-11-22 19:18:59,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2021-11-22 19:18:59,560 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 1001 mSDsluCounter, 9796 mSDsCounter, 0 mSdLazyCounter, 4184 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 11173 SdHoareTripleChecker+Invalid, 4298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 4184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:18:59,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 11173 Invalid, 4298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 4184 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 19:18:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-11-22 19:18:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2812. [2021-11-22 19:18:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2789 states have (on average 1.269989243456436) internal successors, (3542), 2811 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3542 transitions. [2021-11-22 19:18:59,648 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3542 transitions. Word has length 101 [2021-11-22 19:18:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:18:59,649 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 3542 transitions. [2021-11-22 19:18:59,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:18:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3542 transitions. [2021-11-22 19:18:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:18:59,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:18:59,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:18:59,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 19:18:59,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 19:18:59,871 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:18:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:18:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1633683303, now seen corresponding path program 1 times [2021-11-22 19:18:59,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:18:59,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128500229] [2021-11-22 19:18:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:59,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:18:59,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:18:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911764326] [2021-11-22 19:18:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:18:59,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:18:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:18:59,937 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:18:59,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 19:19:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-22 19:19:00,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:00,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:19:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:00,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:19:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:00,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:19:00,542 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:19:00,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:19:00,574 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:00,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-22 19:19:00,582 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:00,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 19:19:00,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-22 19:19:00,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-22 19:19:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:00,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:00,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:00,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128500229] [2021-11-22 19:19:00,786 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:00,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911764326] [2021-11-22 19:19:00,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911764326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:00,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:00,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:19:00,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917932424] [2021-11-22 19:19:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:00,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:19:00,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:19:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:19:00,788 INFO L87 Difference]: Start difference. First operand 2812 states and 3542 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:01,285 INFO L93 Difference]: Finished difference Result 4502 states and 5658 transitions. [2021-11-22 19:19:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:19:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:19:01,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:01,292 INFO L225 Difference]: With dead ends: 4502 [2021-11-22 19:19:01,292 INFO L226 Difference]: Without dead ends: 2800 [2021-11-22 19:19:01,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:19:01,295 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 51 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:01,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3236 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:19:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2021-11-22 19:19:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2799. [2021-11-22 19:19:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2776 states have (on average 1.2705331412103746) internal successors, (3527), 2798 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3527 transitions. [2021-11-22 19:19:01,407 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3527 transitions. Word has length 101 [2021-11-22 19:19:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:01,407 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3527 transitions. [2021-11-22 19:19:01,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3527 transitions. [2021-11-22 19:19:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 19:19:01,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:01,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:01,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-22 19:19:01,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 19:19:01,623 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:01,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1683824081, now seen corresponding path program 1 times [2021-11-22 19:19:01,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:01,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103645770] [2021-11-22 19:19:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:01,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:01,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:01,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104976013] [2021-11-22 19:19:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:01,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:01,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:19:01,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 19:19:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:02,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 19:19:02,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:02,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-22 19:19:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:02,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:02,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103645770] [2021-11-22 19:19:02,388 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104976013] [2021-11-22 19:19:02,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104976013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:02,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:02,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:19:02,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904326960] [2021-11-22 19:19:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:02,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:19:02,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:19:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:19:02,390 INFO L87 Difference]: Start difference. First operand 2799 states and 3527 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:04,609 INFO L93 Difference]: Finished difference Result 6708 states and 8383 transitions. [2021-11-22 19:19:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:19:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 19:19:04,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:04,618 INFO L225 Difference]: With dead ends: 6708 [2021-11-22 19:19:04,618 INFO L226 Difference]: Without dead ends: 3998 [2021-11-22 19:19:04,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:19:04,621 INFO L933 BasicCegarLoop]: 2293 mSDtfsCounter, 2262 mSDsluCounter, 5676 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:04,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2262 Valid, 7969 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 19:19:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-11-22 19:19:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3300. [2021-11-22 19:19:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3277 states have (on average 1.271589868782423) internal successors, (4167), 3299 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4167 transitions. [2021-11-22 19:19:04,744 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4167 transitions. Word has length 104 [2021-11-22 19:19:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:04,745 INFO L470 AbstractCegarLoop]: Abstraction has 3300 states and 4167 transitions. [2021-11-22 19:19:04,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4167 transitions. [2021-11-22 19:19:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 19:19:04,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:04,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:04,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:04,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 19:19:04,963 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1759416687, now seen corresponding path program 1 times [2021-11-22 19:19:04,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:04,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690686816] [2021-11-22 19:19:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:04,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:05,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:05,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397119138] [2021-11-22 19:19:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:05,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:05,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:19:05,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 19:19:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:05,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-22 19:19:05,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:05,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:19:05,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:05,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:05,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:05,828 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:05,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-22 19:19:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:05,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:05,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-11-22 19:19:05,935 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:19:05,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:19:05,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-22 19:19:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:06,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:06,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:06,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690686816] [2021-11-22 19:19:06,048 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:06,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397119138] [2021-11-22 19:19:06,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397119138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:06,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:06,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 19:19:06,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740334845] [2021-11-22 19:19:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:06,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 19:19:06,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 19:19:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:19:06,050 INFO L87 Difference]: Start difference. First operand 3300 states and 4167 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:08,229 INFO L93 Difference]: Finished difference Result 5161 states and 6425 transitions. [2021-11-22 19:19:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 19:19:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 19:19:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:08,249 INFO L225 Difference]: With dead ends: 5161 [2021-11-22 19:19:08,249 INFO L226 Difference]: Without dead ends: 3051 [2021-11-22 19:19:08,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-11-22 19:19:08,253 INFO L933 BasicCegarLoop]: 1294 mSDtfsCounter, 3090 mSDsluCounter, 6666 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 7960 SdHoareTripleChecker+Invalid, 3936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1094 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:08,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3090 Valid, 7960 Invalid, 3936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2700 Invalid, 0 Unknown, 1094 Unchecked, 1.7s Time] [2021-11-22 19:19:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-11-22 19:19:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1713. [2021-11-22 19:19:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1690 states have (on average 1.2656804733727811) internal successors, (2139), 1712 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2139 transitions. [2021-11-22 19:19:08,317 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2139 transitions. Word has length 104 [2021-11-22 19:19:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:08,317 INFO L470 AbstractCegarLoop]: Abstraction has 1713 states and 2139 transitions. [2021-11-22 19:19:08,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2139 transitions. [2021-11-22 19:19:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-22 19:19:08,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:08,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:08,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:08,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 19:19:08,528 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1806220390, now seen corresponding path program 1 times [2021-11-22 19:19:08,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:08,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615278224] [2021-11-22 19:19:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:08,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:08,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:08,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680667130] [2021-11-22 19:19:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:08,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:08,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:19:08,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 19:19:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:09,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-22 19:19:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:09,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-22 19:19:09,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 19:19:09,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 19:19:09,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:19:09,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-22 19:19:09,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 19:19:09,555 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:19:09,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 34 [2021-11-22 19:19:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:09,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:09,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615278224] [2021-11-22 19:19:09,617 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680667130] [2021-11-22 19:19:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680667130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:09,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:09,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:19:09,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113532364] [2021-11-22 19:19:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:19:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:19:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:19:09,619 INFO L87 Difference]: Start difference. First operand 1713 states and 2139 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:12,299 INFO L93 Difference]: Finished difference Result 3629 states and 4491 transitions. [2021-11-22 19:19:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 19:19:12,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-22 19:19:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:12,307 INFO L225 Difference]: With dead ends: 3629 [2021-11-22 19:19:12,307 INFO L226 Difference]: Without dead ends: 2594 [2021-11-22 19:19:12,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 19:19:12,317 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 2545 mSDsluCounter, 7991 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 9224 SdHoareTripleChecker+Invalid, 3777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:12,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2545 Valid, 9224 Invalid, 3777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 3573 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 19:19:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-11-22 19:19:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2176. [2021-11-22 19:19:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2153 states have (on average 1.2670692057594055) internal successors, (2728), 2175 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2728 transitions. [2021-11-22 19:19:12,444 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2728 transitions. Word has length 105 [2021-11-22 19:19:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:12,444 INFO L470 AbstractCegarLoop]: Abstraction has 2176 states and 2728 transitions. [2021-11-22 19:19:12,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2728 transitions. [2021-11-22 19:19:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-22 19:19:12,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:12,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:12,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:12,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:12,686 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:12,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:12,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1200507814, now seen corresponding path program 1 times [2021-11-22 19:19:12,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:12,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093646568] [2021-11-22 19:19:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:12,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:12,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:12,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385375316] [2021-11-22 19:19:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:12,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:12,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:12,724 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:19:12,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 19:19:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:13,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 163 conjunts are in the unsatisfiable core [2021-11-22 19:19:13,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:13,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 19:19:13,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:13,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:19:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:13,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:19:13,710 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:13,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 39 [2021-11-22 19:19:13,718 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:13,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 40 [2021-11-22 19:19:13,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 19:19:13,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-22 19:19:14,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2021-11-22 19:19:14,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:19:14,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 56 treesize of output 51 [2021-11-22 19:19:14,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2021-11-22 19:19:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:14,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:14,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:14,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093646568] [2021-11-22 19:19:14,283 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385375316] [2021-11-22 19:19:14,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385375316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:14,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:14,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-22 19:19:14,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232904664] [2021-11-22 19:19:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:14,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 19:19:14,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:14,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 19:19:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-22 19:19:14,285 INFO L87 Difference]: Start difference. First operand 2176 states and 2728 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:20,416 INFO L93 Difference]: Finished difference Result 5072 states and 6281 transitions. [2021-11-22 19:19:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-22 19:19:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-22 19:19:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:20,437 INFO L225 Difference]: With dead ends: 5072 [2021-11-22 19:19:20,438 INFO L226 Difference]: Without dead ends: 3000 [2021-11-22 19:19:20,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1061, Invalid=3631, Unknown=0, NotChecked=0, Total=4692 [2021-11-22 19:19:20,443 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 5121 mSDsluCounter, 8714 mSDsCounter, 0 mSdLazyCounter, 5308 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5121 SdHoareTripleChecker+Valid, 9853 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 5308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:20,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5121 Valid, 9853 Invalid, 5669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 5308 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-22 19:19:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-11-22 19:19:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2713. [2021-11-22 19:19:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2690 states have (on average 1.2684014869888476) internal successors, (3412), 2712 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3412 transitions. [2021-11-22 19:19:20,552 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3412 transitions. Word has length 105 [2021-11-22 19:19:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:20,552 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 3412 transitions. [2021-11-22 19:19:20,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:20,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3412 transitions. [2021-11-22 19:19:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-22 19:19:20,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:20,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:20,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:20,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 19:19:20,775 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2126556539, now seen corresponding path program 1 times [2021-11-22 19:19:20,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:20,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039552935] [2021-11-22 19:19:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:20,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:20,819 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46849945] [2021-11-22 19:19:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:20,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:20,848 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:19:20,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 19:19:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:21,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 172 conjunts are in the unsatisfiable core [2021-11-22 19:19:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:21,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:19:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:21,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:21,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:21,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:21,697 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:21,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-22 19:19:21,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:21,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:21,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:21,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-11-22 19:19:21,785 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:19:21,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:19:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:21,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:21,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-22 19:19:22,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-22 19:19:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:22,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:22,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:22,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039552935] [2021-11-22 19:19:22,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46849945] [2021-11-22 19:19:22,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46849945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:22,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:22,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 19:19:22,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632043302] [2021-11-22 19:19:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:22,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 19:19:22,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 19:19:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:19:22,074 INFO L87 Difference]: Start difference. First operand 2713 states and 3412 transitions. Second operand has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:24,170 INFO L93 Difference]: Finished difference Result 5301 states and 6635 transitions. [2021-11-22 19:19:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 19:19:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-22 19:19:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:24,177 INFO L225 Difference]: With dead ends: 5301 [2021-11-22 19:19:24,177 INFO L226 Difference]: Without dead ends: 4266 [2021-11-22 19:19:24,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 19:19:24,180 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 5215 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5215 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:24,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5215 Valid, 6787 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1828 Invalid, 0 Unknown, 282 Unchecked, 1.3s Time] [2021-11-22 19:19:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-11-22 19:19:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3026. [2021-11-22 19:19:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3003 states have (on average 1.2717282717282716) internal successors, (3819), 3025 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 3819 transitions. [2021-11-22 19:19:24,326 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 3819 transitions. Word has length 108 [2021-11-22 19:19:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:24,327 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 3819 transitions. [2021-11-22 19:19:24,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 3819 transitions. [2021-11-22 19:19:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:19:24,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:24,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:24,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:24,543 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1672526606, now seen corresponding path program 1 times [2021-11-22 19:19:24,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451249360] [2021-11-22 19:19:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:24,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:24,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:24,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109422331] [2021-11-22 19:19:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:24,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:24,581 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) [2021-11-22 19:19:24,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 19:19:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-22 19:19:25,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:25,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:19:25,279 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:25,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 19:19:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:25,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 19:19:25,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:25,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 19:19:25,391 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:19:25,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:19:25,422 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:25,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-22 19:19:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:25,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:25,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:25,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451249360] [2021-11-22 19:19:25,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:25,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109422331] [2021-11-22 19:19:25,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109422331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:25,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:25,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:19:25,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412640548] [2021-11-22 19:19:25,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:25,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:19:25,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:19:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:19:25,542 INFO L87 Difference]: Start difference. First operand 3026 states and 3819 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:26,751 INFO L93 Difference]: Finished difference Result 5119 states and 6394 transitions. [2021-11-22 19:19:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:19:26,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:19:26,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:26,755 INFO L225 Difference]: With dead ends: 5119 [2021-11-22 19:19:26,756 INFO L226 Difference]: Without dead ends: 3292 [2021-11-22 19:19:26,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:19:26,766 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 212 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:26,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 3084 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:19:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-11-22 19:19:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3043. [2021-11-22 19:19:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3020 states have (on average 1.270860927152318) internal successors, (3838), 3042 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 3838 transitions. [2021-11-22 19:19:26,892 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 3838 transitions. Word has length 109 [2021-11-22 19:19:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:26,893 INFO L470 AbstractCegarLoop]: Abstraction has 3043 states and 3838 transitions. [2021-11-22 19:19:26,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 3838 transitions. [2021-11-22 19:19:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:19:26,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:26,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:26,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:27,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:27,108 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1233146676, now seen corresponding path program 1 times [2021-11-22 19:19:27,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:27,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176141598] [2021-11-22 19:19:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:27,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:27,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:27,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745201776] [2021-11-22 19:19:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:27,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:27,165 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) [2021-11-22 19:19:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 19:19:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:27,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-22 19:19:27,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:27,945 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:27,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-22 19:19:28,160 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:28,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-22 19:19:28,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:28,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:28,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176141598] [2021-11-22 19:19:28,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745201776] [2021-11-22 19:19:28,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745201776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:28,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:28,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 19:19:28,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807898305] [2021-11-22 19:19:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:28,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 19:19:28,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 19:19:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:19:28,388 INFO L87 Difference]: Start difference. First operand 3043 states and 3838 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:39,506 INFO L93 Difference]: Finished difference Result 7557 states and 9435 transitions. [2021-11-22 19:19:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-22 19:19:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:19:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:39,512 INFO L225 Difference]: With dead ends: 7557 [2021-11-22 19:19:39,513 INFO L226 Difference]: Without dead ends: 4738 [2021-11-22 19:19:39,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=649, Invalid=3773, Unknown=0, NotChecked=0, Total=4422 [2021-11-22 19:19:39,519 INFO L933 BasicCegarLoop]: 1718 mSDtfsCounter, 4275 mSDsluCounter, 17531 mSDsCounter, 0 mSdLazyCounter, 9710 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 19249 SdHoareTripleChecker+Invalid, 10002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 9710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:39,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4275 Valid, 19249 Invalid, 10002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 9710 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-22 19:19:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-11-22 19:19:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 3441. [2021-11-22 19:19:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3418 states have (on average 1.2679929783499122) internal successors, (4334), 3440 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4334 transitions. [2021-11-22 19:19:39,691 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4334 transitions. Word has length 109 [2021-11-22 19:19:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:39,691 INFO L470 AbstractCegarLoop]: Abstraction has 3441 states and 4334 transitions. [2021-11-22 19:19:39,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4334 transitions. [2021-11-22 19:19:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:19:39,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:39,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:39,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:39,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:39,923 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1970463348, now seen corresponding path program 1 times [2021-11-22 19:19:39,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109025501] [2021-11-22 19:19:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:39,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:39,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:39,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624001251] [2021-11-22 19:19:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:39,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:39,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:39,988 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) [2021-11-22 19:19:40,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 19:19:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:40,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-22 19:19:40,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:40,947 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:19:40,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-11-22 19:19:40,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-22 19:19:41,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:19:41,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 19:19:41,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 19:19:41,224 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:19:41,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-11-22 19:19:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:41,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:41,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109025501] [2021-11-22 19:19:41,260 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624001251] [2021-11-22 19:19:41,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624001251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:41,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:41,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:19:41,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540976537] [2021-11-22 19:19:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:41,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:19:41,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:19:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:19:41,263 INFO L87 Difference]: Start difference. First operand 3441 states and 4334 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:46,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:46,332 INFO L93 Difference]: Finished difference Result 4652 states and 5783 transitions. [2021-11-22 19:19:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 19:19:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:19:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:46,342 INFO L225 Difference]: With dead ends: 4652 [2021-11-22 19:19:46,343 INFO L226 Difference]: Without dead ends: 3408 [2021-11-22 19:19:46,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 19:19:46,345 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 3099 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 3951 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 9156 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 3951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:46,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3099 Valid, 9156 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 3951 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-22 19:19:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2021-11-22 19:19:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 2951. [2021-11-22 19:19:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 2928 states have (on average 1.2663934426229508) internal successors, (3708), 2950 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 3708 transitions. [2021-11-22 19:19:46,469 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 3708 transitions. Word has length 109 [2021-11-22 19:19:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:46,470 INFO L470 AbstractCegarLoop]: Abstraction has 2951 states and 3708 transitions. [2021-11-22 19:19:46,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 3708 transitions. [2021-11-22 19:19:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:19:46,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:46,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:46,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:46,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:46,687 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -438733836, now seen corresponding path program 1 times [2021-11-22 19:19:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787538962] [2021-11-22 19:19:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:46,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:46,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564645951] [2021-11-22 19:19:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:46,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:46,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:46,729 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) [2021-11-22 19:19:46,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 19:19:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-22 19:19:47,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:47,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:19:47,474 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:19:47,474 INFO L388 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 [2021-11-22 19:19:47,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:47,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 19:19:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:47,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 19:19:47,589 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:19:47,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:19:47,629 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:47,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-11-22 19:19:47,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:47,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 19:19:48,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 19:19:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:19:48,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:19:48,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:19:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787538962] [2021-11-22 19:19:48,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:19:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564645951] [2021-11-22 19:19:48,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564645951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:19:48,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:19:48,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:19:48,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114470494] [2021-11-22 19:19:48,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:19:48,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 19:19:48,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:19:48,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 19:19:48,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:19:48,181 INFO L87 Difference]: Start difference. First operand 2951 states and 3708 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:19:51,281 INFO L93 Difference]: Finished difference Result 6340 states and 7956 transitions. [2021-11-22 19:19:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 19:19:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:19:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:19:51,289 INFO L225 Difference]: With dead ends: 6340 [2021-11-22 19:19:51,289 INFO L226 Difference]: Without dead ends: 4600 [2021-11-22 19:19:51,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:19:51,292 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 2315 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 8495 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:19:51,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 8495 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-22 19:19:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2021-11-22 19:19:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 2951. [2021-11-22 19:19:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 2928 states have (on average 1.266051912568306) internal successors, (3707), 2950 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 3707 transitions. [2021-11-22 19:19:51,491 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 3707 transitions. Word has length 109 [2021-11-22 19:19:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:19:51,493 INFO L470 AbstractCegarLoop]: Abstraction has 2951 states and 3707 transitions. [2021-11-22 19:19:51,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:19:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 3707 transitions. [2021-11-22 19:19:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:19:51,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:19:51,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:19:51,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 19:19:51,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 19:19:51,712 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:19:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:19:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -163974222, now seen corresponding path program 1 times [2021-11-22 19:19:51,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:19:51,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419999857] [2021-11-22 19:19:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:51,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:19:51,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:19:51,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823957585] [2021-11-22 19:19:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:19:51,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:19:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:19:51,799 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) [2021-11-22 19:19:51,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 19:19:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:19:53,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 296 conjunts are in the unsatisfiable core [2021-11-22 19:19:53,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:19:53,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:19:53,854 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:19:53,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 17 [2021-11-22 19:19:53,950 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 19:19:53,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-22 19:19:54,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:19:54,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-11-22 19:19:54,881 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-22 19:19:54,881 INFO L388 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 160 treesize of output 160 [2021-11-22 19:20:10,814 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:20:10,814 INFO L388 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 17 treesize of output 21 [2021-11-22 19:20:12,104 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 19:20:12,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-22 19:20:12,786 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-22 19:20:12,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 81 [2021-11-22 19:20:13,459 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-22 19:20:13,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 71 [2021-11-22 19:20:13,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-22 19:20:14,751 INFO L354 Elim1Store]: treesize reduction 90, result has 15.1 percent of original size [2021-11-22 19:20:14,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 51 treesize of output 57 [2021-11-22 19:20:20,545 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-22 19:20:20,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 81 [2021-11-22 19:20:21,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2021-11-22 19:20:22,387 INFO L354 Elim1Store]: treesize reduction 90, result has 15.1 percent of original size [2021-11-22 19:20:22,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 51 treesize of output 57 [2021-11-22 19:20:23,928 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-22 19:20:23,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-22 19:20:26,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:20:26,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 53 [2021-11-22 19:20:28,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:20:28,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:20:28,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:20:28,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:20:28,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 19:20:28,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:20:28,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 19:20:28,596 INFO L354 Elim1Store]: treesize reduction 6, result has 14.3 percent of original size [2021-11-22 19:20:28,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 69 [2021-11-22 19:20:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:20:39,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:20:39,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:20:39,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419999857] [2021-11-22 19:20:39,037 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:20:39,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823957585] [2021-11-22 19:20:39,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823957585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:20:39,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:20:39,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-11-22 19:20:39,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198258221] [2021-11-22 19:20:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:20:39,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-22 19:20:39,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:20:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-22 19:20:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1298, Unknown=3, NotChecked=0, Total=1406 [2021-11-22 19:20:39,038 INFO L87 Difference]: Start difference. First operand 2951 states and 3707 transitions. Second operand has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:20:58,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 19:21:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:21:25,659 INFO L93 Difference]: Finished difference Result 5167 states and 6482 transitions. [2021-11-22 19:21:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-22 19:21:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:21:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:21:25,665 INFO L225 Difference]: With dead ends: 5167 [2021-11-22 19:21:25,665 INFO L226 Difference]: Without dead ends: 3368 [2021-11-22 19:21:25,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 65.2s TimeCoverageRelationStatistics Valid=239, Invalid=2834, Unknown=7, NotChecked=0, Total=3080 [2021-11-22 19:21:25,668 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 357 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 14041 SdHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2221 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:21:25,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 14041 Invalid, 4782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2535 Invalid, 1 Unknown, 2221 Unchecked, 12.7s Time] [2021-11-22 19:21:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2021-11-22 19:21:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3062. [2021-11-22 19:21:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3039 states have (on average 1.2599539322145443) internal successors, (3829), 3061 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:21:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 3829 transitions. [2021-11-22 19:21:25,801 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 3829 transitions. Word has length 109 [2021-11-22 19:21:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:21:25,802 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 3829 transitions. [2021-11-22 19:21:25,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:21:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 3829 transitions. [2021-11-22 19:21:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 19:21:25,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:21:25,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:21:25,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-22 19:21:26,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 19:21:26,019 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:21:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:21:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash -106715920, now seen corresponding path program 1 times [2021-11-22 19:21:26,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:21:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806459065] [2021-11-22 19:21:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:21:26,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:21:26,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:21:26,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835418127] [2021-11-22 19:21:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:21:26,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:21:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:21:26,059 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) [2021-11-22 19:21:26,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-22 19:21:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:21:26,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 19:21:26,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:21:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:21:26,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:21:26,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:21:26,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806459065] [2021-11-22 19:21:26,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 19:21:26,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835418127] [2021-11-22 19:21:26,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835418127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:21:26,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:21:26,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:21:26,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948153717] [2021-11-22 19:21:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:21:26,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:21:26,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:21:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:21:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:21:26,792 INFO L87 Difference]: Start difference. First operand 3062 states and 3829 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:21:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:21:29,105 INFO L93 Difference]: Finished difference Result 6958 states and 8664 transitions. [2021-11-22 19:21:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:21:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-22 19:21:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:21:29,109 INFO L225 Difference]: With dead ends: 6958 [2021-11-22 19:21:29,109 INFO L226 Difference]: Without dead ends: 4165 [2021-11-22 19:21:29,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:21:29,112 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 563 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:21:29,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 2411 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 19:21:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-11-22 19:21:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 3062. [2021-11-22 19:21:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3039 states have (on average 1.2224415926291543) internal successors, (3715), 3061 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:21:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 3715 transitions. [2021-11-22 19:21:29,265 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 3715 transitions. Word has length 109 [2021-11-22 19:21:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:21:29,265 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 3715 transitions. [2021-11-22 19:21:29,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:21:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 3715 transitions. [2021-11-22 19:21:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 19:21:29,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:21:29,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:21:29,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-22 19:21:29,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:21:29,480 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-22 19:21:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:21:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1234242026, now seen corresponding path program 1 times [2021-11-22 19:21:29,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:21:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792888928] [2021-11-22 19:21:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:21:29,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:21:29,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 19:21:29,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132216332] [2021-11-22 19:21:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:21:29,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:21:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:21:29,515 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) [2021-11-22 19:21:29,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process Killed by 15