./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_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_priority_queue_s_sift_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:41:22,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:41:22,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:41:22,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:41:22,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:41:22,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:41:22,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:41:22,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:41:22,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:41:22,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:41:22,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:41:22,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:41:22,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:41:22,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:41:22,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:41:22,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:41:22,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:41:22,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:41:22,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:41:22,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:41:22,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:41:22,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:41:22,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:41:22,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:41:22,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:41:22,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:41:22,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:41:22,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:41:22,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:41:22,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:41:22,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:41:22,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:41:22,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:41:22,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:41:22,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:41:22,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:41:22,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:41:22,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:41:22,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:41:22,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:41:22,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:41:22,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:41:22,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:41:22,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:41:22,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:41:22,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:41:22,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:41:22,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:41:22,500 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:41:22,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:41:22,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:41:22,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:41:22,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:41:22,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:41:22,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:41:22,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:41:22,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:41:22,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:41:22,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:41:22,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:41:22,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:41:22,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-11-22 20:41:22,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:41:22,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:41:22,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:41:22,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:41:22,742 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:41:22,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-22 20:41:22,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6bc821b/5b40efcf96cc42319516f534b74f4735/FLAGf94283d70 [2021-11-22 20:41:23,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:41:23,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-22 20:41:23,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6bc821b/5b40efcf96cc42319516f534b74f4735/FLAGf94283d70 [2021-11-22 20:41:23,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6bc821b/5b40efcf96cc42319516f534b74f4735 [2021-11-22 20:41:23,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:41:23,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:41:23,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:41:23,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:41:23,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:41:23,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:41:23" (1/1) ... [2021-11-22 20:41:23,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a4184f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:23, skipping insertion in model container [2021-11-22 20:41:23,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:41:23" (1/1) ... [2021-11-22 20:41:23,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:41:23,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:41:24,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-22 20:41:24,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-22 20:41:24,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,798 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:41:24,799 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:41:24,799 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:41:24,800 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:41:24,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:41:24,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:41:24,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:41:24,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:41:24,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:41:24,803 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:41:24,884 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:41:24,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,902 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:24,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:41:25,033 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:41:25,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-22 20:41:25,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-22 20:41:25,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:41:25,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:41:25,139 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:41:25,139 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:41:25,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:41:25,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:41:25,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:41:25,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:41:25,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:41:25,142 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:41:25,176 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:41:25,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,202 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:25,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:41:25,427 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:41:25,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25 WrapperNode [2021-11-22 20:41:25,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:41:25,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:41:25,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:41:25,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:41:25,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,687 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 790, calls inlined = 386, statements flattened = 5402 [2021-11-22 20:41:25,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:41:25,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:41:25,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:41:25,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:41:25,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:41:25,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:41:25,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:41:25,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:41:25,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (1/1) ... [2021-11-22 20:41:25,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:41:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:25,926 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 20:41:25,937 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 20:41:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:41:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:41:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:41:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:41:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:41:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:41:25,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:41:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:41:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:41:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:41:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:41:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:41:26,233 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:41:26,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:41:28,087 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:41:28,103 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:41:28,104 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-22 20:41:28,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:41:28 BoogieIcfgContainer [2021-11-22 20:41:28,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:41:28,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:41:28,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:41:28,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:41:28,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:41:23" (1/3) ... [2021-11-22 20:41:28,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af01cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:41:28, skipping insertion in model container [2021-11-22 20:41:28,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:25" (2/3) ... [2021-11-22 20:41:28,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af01cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:41:28, skipping insertion in model container [2021-11-22 20:41:28,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:41:28" (3/3) ... [2021-11-22 20:41:28,112 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-11-22 20:41:28,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:41:28,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-11-22 20:41:28,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:41:28,154 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 20:41:28,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-11-22 20:41:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 1001 states, 975 states have (on average 1.4256410256410257) internal successors, (1390), 1000 states have internal predecessors, (1390), 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 20:41:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 20:41:28,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:28,185 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] [2021-11-22 20:41:28,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 318710214, now seen corresponding path program 1 times [2021-11-22 20:41:28,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068643513] [2021-11-22 20:41:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:28,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:28,581 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 20:41:28,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:28,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068643513] [2021-11-22 20:41:28,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068643513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:28,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:28,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:41:28,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836659531] [2021-11-22 20:41:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:28,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:41:28,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:41:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:41:28,617 INFO L87 Difference]: Start difference. First operand has 1001 states, 975 states have (on average 1.4256410256410257) internal successors, (1390), 1000 states have internal predecessors, (1390), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 20:41:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:28,694 INFO L93 Difference]: Finished difference Result 1995 states and 2772 transitions. [2021-11-22 20:41:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:41:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-22 20:41:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:28,713 INFO L225 Difference]: With dead ends: 1995 [2021-11-22 20:41:28,713 INFO L226 Difference]: Without dead ends: 995 [2021-11-22 20:41:28,720 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 20:41:28,723 INFO L933 BasicCegarLoop]: 1288 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, 1288 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 20:41:28,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:41:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-11-22 20:41:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2021-11-22 20:41:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.322680412371134) internal successors, (1283), 994 states have internal predecessors, (1283), 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 20:41:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1283 transitions. [2021-11-22 20:41:28,801 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1283 transitions. Word has length 42 [2021-11-22 20:41:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:28,801 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1283 transitions. [2021-11-22 20:41:28,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 20:41:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1283 transitions. [2021-11-22 20:41:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 20:41:28,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:28,806 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] [2021-11-22 20:41:28,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:41:28,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash 275455494, now seen corresponding path program 1 times [2021-11-22 20:41:28,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:28,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697749593] [2021-11-22 20:41:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:28,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:29,011 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 20:41:29,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:29,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697749593] [2021-11-22 20:41:29,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697749593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:29,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:29,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:29,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142930145] [2021-11-22 20:41:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:29,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:29,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:29,015 INFO L87 Difference]: Start difference. First operand 995 states and 1283 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 20:41:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:29,136 INFO L93 Difference]: Finished difference Result 2123 states and 2731 transitions. [2021-11-22 20:41:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:41:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-22 20:41:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:29,140 INFO L225 Difference]: With dead ends: 2123 [2021-11-22 20:41:29,140 INFO L226 Difference]: Without dead ends: 1208 [2021-11-22 20:41:29,141 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 20:41:29,142 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 2049 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:29,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 2277 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:41:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-22 20:41:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 995. [2021-11-22 20:41:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3195876288659794) internal successors, (1280), 994 states have internal predecessors, (1280), 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 20:41:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1280 transitions. [2021-11-22 20:41:29,162 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1280 transitions. Word has length 42 [2021-11-22 20:41:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:29,162 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1280 transitions. [2021-11-22 20:41:29,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 20:41:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1280 transitions. [2021-11-22 20:41:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 20:41:29,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:29,164 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] [2021-11-22 20:41:29,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:41:29,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash 89005988, now seen corresponding path program 1 times [2021-11-22 20:41:29,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:29,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919018510] [2021-11-22 20:41:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:29,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:29,332 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 20:41:29,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:29,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919018510] [2021-11-22 20:41:29,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919018510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:29,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:29,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:29,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893791514] [2021-11-22 20:41:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:29,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:29,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:29,336 INFO L87 Difference]: Start difference. First operand 995 states and 1280 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 20:41:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:29,794 INFO L93 Difference]: Finished difference Result 2641 states and 3370 transitions. [2021-11-22 20:41:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:41:29,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2021-11-22 20:41:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:29,800 INFO L225 Difference]: With dead ends: 2641 [2021-11-22 20:41:29,800 INFO L226 Difference]: Without dead ends: 1694 [2021-11-22 20:41:29,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:29,805 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 3349 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:29,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3349 Valid, 3215 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-11-22 20:41:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 995. [2021-11-22 20:41:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3164948453608247) internal successors, (1277), 994 states have internal predecessors, (1277), 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 20:41:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1277 transitions. [2021-11-22 20:41:29,866 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1277 transitions. Word has length 50 [2021-11-22 20:41:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1277 transitions. [2021-11-22 20:41:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 20:41:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1277 transitions. [2021-11-22 20:41:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 20:41:29,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:29,870 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] [2021-11-22 20:41:29,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:41:29,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1382756188, now seen corresponding path program 1 times [2021-11-22 20:41:29,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143562688] [2021-11-22 20:41:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:29,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:29,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962914544] [2021-11-22 20:41:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:29,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:29,943 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 20:41:29,944 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 20:41:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:30,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 20:41:30,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:30,474 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 20:41:30,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:30,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:30,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143562688] [2021-11-22 20:41:30,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:30,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962914544] [2021-11-22 20:41:30,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962914544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:30,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:30,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:30,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615956059] [2021-11-22 20:41:30,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:30,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:30,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:30,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:30,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:30,478 INFO L87 Difference]: Start difference. First operand 995 states and 1277 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 20:41:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:30,803 INFO L93 Difference]: Finished difference Result 2820 states and 3597 transitions. [2021-11-22 20:41:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:41:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-22 20:41:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:30,809 INFO L225 Difference]: With dead ends: 2820 [2021-11-22 20:41:30,809 INFO L226 Difference]: Without dead ends: 1904 [2021-11-22 20:41:30,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:30,811 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 6679 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:30,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6679 Valid, 3172 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:41:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2021-11-22 20:41:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 995. [2021-11-22 20:41:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.31340206185567) internal successors, (1274), 994 states have internal predecessors, (1274), 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 20:41:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1274 transitions. [2021-11-22 20:41:30,842 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1274 transitions. Word has length 66 [2021-11-22 20:41:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:30,842 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1274 transitions. [2021-11-22 20:41:30,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 20:41:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1274 transitions. [2021-11-22 20:41:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 20:41:30,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:30,843 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] [2021-11-22 20:41:30,868 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 20:41:31,055 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 20:41:31,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 733445312, now seen corresponding path program 1 times [2021-11-22 20:41:31,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:31,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374550294] [2021-11-22 20:41:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:31,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:31,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851457163] [2021-11-22 20:41:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:31,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:31,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:31,131 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 20:41:31,132 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 20:41:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:31,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:41:31,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:31,686 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 20:41:31,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:31,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:31,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374550294] [2021-11-22 20:41:31,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:31,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851457163] [2021-11-22 20:41:31,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851457163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:31,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:31,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:31,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458188887] [2021-11-22 20:41:31,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:31,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:31,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:31,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:31,689 INFO L87 Difference]: Start difference. First operand 995 states and 1274 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 20:41:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:32,230 INFO L93 Difference]: Finished difference Result 3908 states and 4946 transitions. [2021-11-22 20:41:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:41:32,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 90 [2021-11-22 20:41:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:32,239 INFO L225 Difference]: With dead ends: 3908 [2021-11-22 20:41:32,240 INFO L226 Difference]: Without dead ends: 2976 [2021-11-22 20:41:32,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:41:32,245 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 6819 mSDsluCounter, 3669 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6819 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:32,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6819 Valid, 4886 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-11-22 20:41:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 995. [2021-11-22 20:41:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3103092783505155) internal successors, (1271), 994 states have internal predecessors, (1271), 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 20:41:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1271 transitions. [2021-11-22 20:41:32,285 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1271 transitions. Word has length 90 [2021-11-22 20:41:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:32,287 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1271 transitions. [2021-11-22 20:41:32,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 20:41:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1271 transitions. [2021-11-22 20:41:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 20:41:32,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:32,288 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] [2021-11-22 20:41:32,311 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 20:41:32,499 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 20:41:32,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1767782392, now seen corresponding path program 1 times [2021-11-22 20:41:32,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046956738] [2021-11-22 20:41:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:32,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:32,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:32,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567101340] [2021-11-22 20:41:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:32,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:32,577 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 20:41:32,578 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 20:41:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:32,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 20:41:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:33,191 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 20:41:33,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:33,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:33,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046956738] [2021-11-22 20:41:33,192 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:33,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567101340] [2021-11-22 20:41:33,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567101340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:33,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:33,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:33,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788208100] [2021-11-22 20:41:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:33,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:33,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:33,194 INFO L87 Difference]: Start difference. First operand 995 states and 1271 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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 20:41:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:33,380 INFO L93 Difference]: Finished difference Result 2051 states and 2619 transitions. [2021-11-22 20:41:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:41:33,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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 106 [2021-11-22 20:41:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:33,384 INFO L225 Difference]: With dead ends: 2051 [2021-11-22 20:41:33,384 INFO L226 Difference]: Without dead ends: 1208 [2021-11-22 20:41:33,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:33,386 INFO L933 BasicCegarLoop]: 1202 mSDtfsCounter, 5498 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5498 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:33,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5498 Valid, 1703 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:41:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-22 20:41:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 995. [2021-11-22 20:41:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3082474226804124) internal successors, (1269), 994 states have internal predecessors, (1269), 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 20:41:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1269 transitions. [2021-11-22 20:41:33,417 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1269 transitions. Word has length 106 [2021-11-22 20:41:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:33,418 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1269 transitions. [2021-11-22 20:41:33,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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 20:41:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1269 transitions. [2021-11-22 20:41:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 20:41:33,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:33,419 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] [2021-11-22 20:41:33,439 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 20:41:33,639 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 20:41:33,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -578823433, now seen corresponding path program 1 times [2021-11-22 20:41:33,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570954452] [2021-11-22 20:41:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:33,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:33,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:33,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615607088] [2021-11-22 20:41:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:33,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:33,684 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 20:41:33,686 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 20:41:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:34,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:41:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:34,352 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 20:41:34,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:34,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570954452] [2021-11-22 20:41:34,352 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615607088] [2021-11-22 20:41:34,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615607088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:34,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:34,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:34,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769070107] [2021-11-22 20:41:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:34,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:34,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:34,354 INFO L87 Difference]: Start difference. First operand 995 states and 1269 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 20:41:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:34,865 INFO L93 Difference]: Finished difference Result 2125 states and 2707 transitions. [2021-11-22 20:41:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:41:34,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 110 [2021-11-22 20:41:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:34,872 INFO L225 Difference]: With dead ends: 2125 [2021-11-22 20:41:34,872 INFO L226 Difference]: Without dead ends: 1282 [2021-11-22 20:41:34,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-22 20:41:34,874 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 4459 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:34,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 2580 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-22 20:41:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 995. [2021-11-22 20:41:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3041237113402062) internal successors, (1265), 994 states have internal predecessors, (1265), 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 20:41:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1265 transitions. [2021-11-22 20:41:34,906 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1265 transitions. Word has length 110 [2021-11-22 20:41:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:34,907 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1265 transitions. [2021-11-22 20:41:34,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 20:41:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1265 transitions. [2021-11-22 20:41:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-22 20:41:34,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:34,908 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:34,931 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 20:41:35,123 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 20:41:35,123 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash -541409133, now seen corresponding path program 1 times [2021-11-22 20:41:35,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:35,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031161329] [2021-11-22 20:41:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:35,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:35,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:35,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881816192] [2021-11-22 20:41:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:35,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:35,185 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 20:41:35,186 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 20:41:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:35,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:41:35,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:35,877 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 20:41:35,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:35,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:35,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031161329] [2021-11-22 20:41:35,878 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:35,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881816192] [2021-11-22 20:41:35,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881816192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:35,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:35,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:35,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963710223] [2021-11-22 20:41:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:35,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:41:35,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:41:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:41:35,881 INFO L87 Difference]: Start difference. First operand 995 states and 1265 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 20:41:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:36,202 INFO L93 Difference]: Finished difference Result 2328 states and 2955 transitions. [2021-11-22 20:41:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:41:36,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 118 [2021-11-22 20:41:36,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:36,207 INFO L225 Difference]: With dead ends: 2328 [2021-11-22 20:41:36,208 INFO L226 Difference]: Without dead ends: 1485 [2021-11-22 20:41:36,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:41:36,210 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 7939 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7939 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:36,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7939 Valid, 2068 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:41:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2021-11-22 20:41:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 995. [2021-11-22 20:41:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.3020618556701031) internal successors, (1263), 994 states have internal predecessors, (1263), 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 20:41:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1263 transitions. [2021-11-22 20:41:36,246 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1263 transitions. Word has length 118 [2021-11-22 20:41:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:36,246 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1263 transitions. [2021-11-22 20:41:36,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 20:41:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1263 transitions. [2021-11-22 20:41:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-22 20:41:36,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:36,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:36,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:36,461 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 20:41:36,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:36,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1548527879, now seen corresponding path program 1 times [2021-11-22 20:41:36,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:36,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015397017] [2021-11-22 20:41:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:36,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:36,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:36,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588049576] [2021-11-22 20:41:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:36,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:36,521 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 20:41:36,522 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 20:41:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:36,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:36,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:37,175 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 20:41:37,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:37,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:37,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015397017] [2021-11-22 20:41:37,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:37,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588049576] [2021-11-22 20:41:37,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588049576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:37,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:37,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:37,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758426310] [2021-11-22 20:41:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:37,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:37,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:37,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:37,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:37,178 INFO L87 Difference]: Start difference. First operand 995 states and 1263 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 20:41:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:37,714 INFO L93 Difference]: Finished difference Result 2080 states and 2651 transitions. [2021-11-22 20:41:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:41:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 127 [2021-11-22 20:41:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:37,718 INFO L225 Difference]: With dead ends: 2080 [2021-11-22 20:41:37,719 INFO L226 Difference]: Without dead ends: 1237 [2021-11-22 20:41:37,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:41:37,721 INFO L933 BasicCegarLoop]: 1304 mSDtfsCounter, 5539 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:37,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5539 Valid, 3932 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-22 20:41:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 995. [2021-11-22 20:41:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 970 states have (on average 1.2938144329896908) internal successors, (1255), 994 states have internal predecessors, (1255), 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 20:41:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1255 transitions. [2021-11-22 20:41:37,752 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1255 transitions. Word has length 127 [2021-11-22 20:41:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:37,752 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1255 transitions. [2021-11-22 20:41:37,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 20:41:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1255 transitions. [2021-11-22 20:41:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 20:41:37,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:37,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:37,774 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 20:41:37,974 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 20:41:37,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1034836412, now seen corresponding path program 1 times [2021-11-22 20:41:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298003325] [2021-11-22 20:41:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:37,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:38,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:38,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059666501] [2021-11-22 20:41:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:38,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:38,031 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 20:41:38,032 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 20:41:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:38,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:41:38,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:38,619 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 20:41:38,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:38,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298003325] [2021-11-22 20:41:38,620 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059666501] [2021-11-22 20:41:38,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059666501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:38,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:38,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:38,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943117739] [2021-11-22 20:41:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:38,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:38,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:38,622 INFO L87 Difference]: Start difference. First operand 995 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 20:41:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:38,728 INFO L93 Difference]: Finished difference Result 1947 states and 2457 transitions. [2021-11-22 20:41:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 130 [2021-11-22 20:41:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:38,732 INFO L225 Difference]: With dead ends: 1947 [2021-11-22 20:41:38,732 INFO L226 Difference]: Without dead ends: 1019 [2021-11-22 20:41:38,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 20:41:38,734 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 14 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:38,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3692 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:41:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-11-22 20:41:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1007. [2021-11-22 20:41:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 982 states have (on average 1.290224032586558) internal successors, (1267), 1006 states have internal predecessors, (1267), 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 20:41:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1267 transitions. [2021-11-22 20:41:38,766 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1267 transitions. Word has length 130 [2021-11-22 20:41:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:38,767 INFO L470 AbstractCegarLoop]: Abstraction has 1007 states and 1267 transitions. [2021-11-22 20:41:38,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 20:41:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1267 transitions. [2021-11-22 20:41:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 20:41:38,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:38,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:38,791 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 20:41:38,983 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 20:41:38,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash -776670974, now seen corresponding path program 1 times [2021-11-22 20:41:38,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134226033] [2021-11-22 20:41:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:38,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:39,045 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:39,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037905214] [2021-11-22 20:41:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:39,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:39,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:39,047 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 20:41:39,049 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 20:41:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:39,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:39,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:39,720 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 20:41:39,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:39,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:39,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134226033] [2021-11-22 20:41:39,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:39,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037905214] [2021-11-22 20:41:39,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037905214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:39,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:39,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:39,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280145876] [2021-11-22 20:41:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:39,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:39,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:39,722 INFO L87 Difference]: Start difference. First operand 1007 states and 1267 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 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 20:41:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:40,392 INFO L93 Difference]: Finished difference Result 2350 states and 2941 transitions. [2021-11-22 20:41:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 20:41:40,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 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 130 [2021-11-22 20:41:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:40,398 INFO L225 Difference]: With dead ends: 2350 [2021-11-22 20:41:40,398 INFO L226 Difference]: Without dead ends: 1499 [2021-11-22 20:41:40,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:41:40,400 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 8383 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8383 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:40,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8383 Valid, 2542 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 20:41:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-22 20:41:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1007. [2021-11-22 20:41:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 982 states have (on average 1.2881873727087576) internal successors, (1265), 1006 states have internal predecessors, (1265), 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 20:41:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1265 transitions. [2021-11-22 20:41:40,433 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1265 transitions. Word has length 130 [2021-11-22 20:41:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:40,434 INFO L470 AbstractCegarLoop]: Abstraction has 1007 states and 1265 transitions. [2021-11-22 20:41:40,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 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 20:41:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1265 transitions. [2021-11-22 20:41:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 20:41:40,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:40,435 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, 1, 1, 1, 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 20:41:40,458 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 20:41:40,651 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 20:41:40,652 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1463247846, now seen corresponding path program 1 times [2021-11-22 20:41:40,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:40,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359995007] [2021-11-22 20:41:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:40,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:40,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659250288] [2021-11-22 20:41:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:40,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:40,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:40,706 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 20:41:40,707 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 20:41:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:41,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:41:41,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:41,453 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 20:41:41,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:41,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359995007] [2021-11-22 20:41:41,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659250288] [2021-11-22 20:41:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659250288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:41,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:41,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:41,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435943974] [2021-11-22 20:41:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:41,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:41,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:41,456 INFO L87 Difference]: Start difference. First operand 1007 states and 1265 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 20:41:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:43,039 INFO L93 Difference]: Finished difference Result 2729 states and 3424 transitions. [2021-11-22 20:41:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:41:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 138 [2021-11-22 20:41:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:43,045 INFO L225 Difference]: With dead ends: 2729 [2021-11-22 20:41:43,046 INFO L226 Difference]: Without dead ends: 1793 [2021-11-22 20:41:43,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:41:43,048 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 947 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:43,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 7221 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 20:41:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-22 20:41:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1019. [2021-11-22 20:41:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 994 states have (on average 1.284708249496982) internal successors, (1277), 1018 states have internal predecessors, (1277), 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 20:41:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1277 transitions. [2021-11-22 20:41:43,086 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1277 transitions. Word has length 138 [2021-11-22 20:41:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:43,087 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1277 transitions. [2021-11-22 20:41:43,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 20:41:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1277 transitions. [2021-11-22 20:41:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 20:41:43,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:43,088 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, 1, 1, 1, 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 20:41:43,110 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 20:41:43,299 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 20:41:43,299 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1293379420, now seen corresponding path program 1 times [2021-11-22 20:41:43,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:43,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486459623] [2021-11-22 20:41:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:43,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:43,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:43,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222613980] [2021-11-22 20:41:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:43,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:43,356 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 20:41:43,361 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 20:41:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:43,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:41:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:44,126 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 20:41:44,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:44,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486459623] [2021-11-22 20:41:44,127 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222613980] [2021-11-22 20:41:44,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222613980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:44,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:44,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:44,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087432857] [2021-11-22 20:41:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:44,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:44,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:44,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:44,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:44,129 INFO L87 Difference]: Start difference. First operand 1019 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 20:41:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:44,252 INFO L93 Difference]: Finished difference Result 1987 states and 2491 transitions. [2021-11-22 20:41:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2021-11-22 20:41:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:44,255 INFO L225 Difference]: With dead ends: 1987 [2021-11-22 20:41:44,256 INFO L226 Difference]: Without dead ends: 1043 [2021-11-22 20:41:44,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 20:41:44,260 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 15 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:44,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3684 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:41:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-22 20:41:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1031. [2021-11-22 20:41:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1006 states have (on average 1.2813121272365806) internal successors, (1289), 1030 states have internal predecessors, (1289), 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 20:41:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1289 transitions. [2021-11-22 20:41:44,295 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1289 transitions. Word has length 138 [2021-11-22 20:41:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:44,297 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1289 transitions. [2021-11-22 20:41:44,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 20:41:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1289 transitions. [2021-11-22 20:41:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 20:41:44,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:44,298 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, 1, 1, 1, 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 20:41:44,319 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 20:41:44,507 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 20:41:44,507 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1774459678, now seen corresponding path program 1 times [2021-11-22 20:41:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:44,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283031197] [2021-11-22 20:41:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:44,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:44,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41765156] [2021-11-22 20:41:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:44,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:44,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:44,556 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 20:41:44,557 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 20:41:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:45,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-22 20:41:45,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:45,226 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 20:41:45,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:45,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283031197] [2021-11-22 20:41:45,227 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41765156] [2021-11-22 20:41:45,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41765156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:45,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:45,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344247471] [2021-11-22 20:41:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:45,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:45,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:45,229 INFO L87 Difference]: Start difference. First operand 1031 states and 1289 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 20:41:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:45,402 INFO L93 Difference]: Finished difference Result 2804 states and 3497 transitions. [2021-11-22 20:41:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:41:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 138 [2021-11-22 20:41:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:45,407 INFO L225 Difference]: With dead ends: 2804 [2021-11-22 20:41:45,407 INFO L226 Difference]: Without dead ends: 1857 [2021-11-22 20:41:45,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 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 20:41:45,410 INFO L933 BasicCegarLoop]: 2226 mSDtfsCounter, 1085 mSDsluCounter, 5545 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:45,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 7771 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:41:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2021-11-22 20:41:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1055. [2021-11-22 20:41:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1030 states have (on average 1.274757281553398) internal successors, (1313), 1054 states have internal predecessors, (1313), 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 20:41:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1313 transitions. [2021-11-22 20:41:45,471 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1313 transitions. Word has length 138 [2021-11-22 20:41:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:45,471 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1313 transitions. [2021-11-22 20:41:45,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 20:41:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1313 transitions. [2021-11-22 20:41:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 20:41:45,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:45,472 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, 1, 1, 1, 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 20:41:45,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:45,672 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 20:41:45,673 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1243656352, now seen corresponding path program 1 times [2021-11-22 20:41:45,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:45,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571234615] [2021-11-22 20:41:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:45,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:45,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:45,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377030592] [2021-11-22 20:41:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:45,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:45,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:45,728 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 20:41:45,749 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 20:41:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:46,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-22 20:41:46,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:46,729 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 20:41:46,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:46,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571234615] [2021-11-22 20:41:46,730 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377030592] [2021-11-22 20:41:46,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377030592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:46,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:46,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:41:46,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971721548] [2021-11-22 20:41:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:46,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:41:46,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:41:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:41:46,734 INFO L87 Difference]: Start difference. First operand 1055 states and 1313 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 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 20:41:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:49,884 INFO L93 Difference]: Finished difference Result 4447 states and 5504 transitions. [2021-11-22 20:41:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 20:41:49,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 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 138 [2021-11-22 20:41:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:49,896 INFO L225 Difference]: With dead ends: 4447 [2021-11-22 20:41:49,896 INFO L226 Difference]: Without dead ends: 3480 [2021-11-22 20:41:49,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=421, Invalid=1559, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 20:41:49,900 INFO L933 BasicCegarLoop]: 2434 mSDtfsCounter, 6132 mSDsluCounter, 18155 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6132 SdHoareTripleChecker+Valid, 20589 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:49,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6132 Valid, 20589 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-22 20:41:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-22 20:41:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 1082. [2021-11-22 20:41:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1057 states have (on average 1.2762535477767265) internal successors, (1349), 1081 states have internal predecessors, (1349), 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 20:41:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1349 transitions. [2021-11-22 20:41:49,964 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1349 transitions. Word has length 138 [2021-11-22 20:41:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:49,964 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 1349 transitions. [2021-11-22 20:41:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 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 20:41:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1349 transitions. [2021-11-22 20:41:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 20:41:49,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:49,966 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, 1, 1, 1, 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 20:41:49,991 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 20:41:50,189 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 20:41:50,189 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1898088612, now seen corresponding path program 1 times [2021-11-22 20:41:50,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351231659] [2021-11-22 20:41:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:50,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:50,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924700455] [2021-11-22 20:41:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:50,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:50,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:50,242 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 20:41:50,260 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 20:41:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:50,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:41:50,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:50,923 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 20:41:50,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:50,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351231659] [2021-11-22 20:41:50,924 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924700455] [2021-11-22 20:41:50,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924700455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:50,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:50,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:50,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517236486] [2021-11-22 20:41:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:50,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:50,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:50,925 INFO L87 Difference]: Start difference. First operand 1082 states and 1349 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 20:41:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:51,492 INFO L93 Difference]: Finished difference Result 2286 states and 2877 transitions. [2021-11-22 20:41:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2021-11-22 20:41:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:51,496 INFO L225 Difference]: With dead ends: 2286 [2021-11-22 20:41:51,496 INFO L226 Difference]: Without dead ends: 1251 [2021-11-22 20:41:51,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 20:41:51,498 INFO L933 BasicCegarLoop]: 1363 mSDtfsCounter, 263 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:51,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 3379 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 20:41:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-11-22 20:41:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1146. [2021-11-22 20:41:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1121 states have (on average 1.2578055307760927) internal successors, (1410), 1145 states have internal predecessors, (1410), 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 20:41:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1410 transitions. [2021-11-22 20:41:51,539 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1410 transitions. Word has length 138 [2021-11-22 20:41:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:51,539 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1410 transitions. [2021-11-22 20:41:51,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 20:41:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1410 transitions. [2021-11-22 20:41:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 20:41:51,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:51,540 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, 1, 1, 1, 1, 1, 1, 1, 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 20:41:51,564 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 20:41:51,755 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 20:41:51,755 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1008472204, now seen corresponding path program 1 times [2021-11-22 20:41:51,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:51,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660152952] [2021-11-22 20:41:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:51,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:51,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:51,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391204586] [2021-11-22 20:41:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:51,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:51,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:51,811 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 20:41:51,843 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 20:41:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:52,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-22 20:41:52,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:52,778 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 32 treesize of output 24 [2021-11-22 20:41:52,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-22 20:41:52,861 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 20:41:52,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:52,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:52,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660152952] [2021-11-22 20:41:52,862 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:52,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391204586] [2021-11-22 20:41:52,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391204586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:52,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:52,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:41:52,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498339325] [2021-11-22 20:41:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:52,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:41:52,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:41:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:52,863 INFO L87 Difference]: Start difference. First operand 1146 states and 1410 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 20:41:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:55,884 INFO L93 Difference]: Finished difference Result 3761 states and 4627 transitions. [2021-11-22 20:41:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 20:41:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 142 [2021-11-22 20:41:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:55,891 INFO L225 Difference]: With dead ends: 3761 [2021-11-22 20:41:55,892 INFO L226 Difference]: Without dead ends: 2732 [2021-11-22 20:41:55,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 20:41:55,894 INFO L933 BasicCegarLoop]: 2126 mSDtfsCounter, 4494 mSDsluCounter, 11515 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 13641 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:55,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4494 Valid, 13641 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-22 20:41:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-22 20:41:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1997. [2021-11-22 20:41:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1972 states have (on average 1.2601419878296145) internal successors, (2485), 1996 states have internal predecessors, (2485), 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 20:41:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2485 transitions. [2021-11-22 20:41:55,999 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2485 transitions. Word has length 142 [2021-11-22 20:41:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:55,999 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2485 transitions. [2021-11-22 20:41:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 20:41:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2485 transitions. [2021-11-22 20:41:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 20:41:56,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:56,001 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, 1, 1, 1, 1, 1, 1, 1, 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 20:41:56,027 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 20:41:56,219 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 20:41:56,219 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1126913678, now seen corresponding path program 1 times [2021-11-22 20:41:56,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:56,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511466133] [2021-11-22 20:41:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:56,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:56,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:56,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400582270] [2021-11-22 20:41:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:56,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:56,268 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 20:41:56,269 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 20:41:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:56,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:41:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:56,982 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 20:41:56,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:56,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511466133] [2021-11-22 20:41:56,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400582270] [2021-11-22 20:41:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400582270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:56,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:56,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520130708] [2021-11-22 20:41:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:56,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:56,984 INFO L87 Difference]: Start difference. First operand 1997 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 20:41:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:58,572 INFO L93 Difference]: Finished difference Result 5059 states and 6264 transitions. [2021-11-22 20:41:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:41:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 142 [2021-11-22 20:41:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:58,578 INFO L225 Difference]: With dead ends: 5059 [2021-11-22 20:41:58,578 INFO L226 Difference]: Without dead ends: 3110 [2021-11-22 20:41:58,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:41:58,582 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 798 mSDsluCounter, 3569 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:58,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 5258 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 20:41:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-11-22 20:41:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2062. [2021-11-22 20:41:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2037 states have (on average 1.2508591065292096) internal successors, (2548), 2061 states have internal predecessors, (2548), 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 20:41:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2548 transitions. [2021-11-22 20:41:58,695 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2548 transitions. Word has length 142 [2021-11-22 20:41:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:58,695 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 2548 transitions. [2021-11-22 20:41:58,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 20:41:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2548 transitions. [2021-11-22 20:41:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 20:41:58,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:58,697 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, 1, 1, 1, 1, 1, 1, 1, 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 20:41:58,720 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 20:41:58,912 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 20:41:58,912 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:41:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash -739794996, now seen corresponding path program 1 times [2021-11-22 20:41:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:58,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181178260] [2021-11-22 20:41:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:58,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:58,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:58,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117427480] [2021-11-22 20:41:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:58,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:58,959 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 20:41:58,960 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 20:41:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:59,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-22 20:41:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:59,736 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:41:59,738 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 27 treesize of output 33 [2021-11-22 20:41:59,756 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:41:59,756 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 28 treesize of output 34 [2021-11-22 20:41:59,857 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 19 treesize of output 18 [2021-11-22 20:41:59,860 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 12 [2021-11-22 20:41:59,862 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 20:41:59,901 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 20:41:59,904 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 20:41:59,914 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 10 treesize of output 4 [2021-11-22 20:41:59,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 20:42:00,058 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 20:42:00,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:00,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181178260] [2021-11-22 20:42:00,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117427480] [2021-11-22 20:42:00,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117427480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:00,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:00,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:42:00,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275837763] [2021-11-22 20:42:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:00,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:42:00,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:42:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:42:00,060 INFO L87 Difference]: Start difference. First operand 2062 states and 2548 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 20:42:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:04,726 INFO L93 Difference]: Finished difference Result 9396 states and 11570 transitions. [2021-11-22 20:42:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-22 20:42:04,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 142 [2021-11-22 20:42:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:04,737 INFO L225 Difference]: With dead ends: 9396 [2021-11-22 20:42:04,737 INFO L226 Difference]: Without dead ends: 7459 [2021-11-22 20:42:04,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=710, Invalid=2712, Unknown=0, NotChecked=0, Total=3422 [2021-11-22 20:42:04,741 INFO L933 BasicCegarLoop]: 2663 mSDtfsCounter, 6396 mSDsluCounter, 17575 mSDsCounter, 0 mSdLazyCounter, 4917 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6396 SdHoareTripleChecker+Valid, 20238 SdHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:04,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6396 Valid, 20238 Invalid, 5023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4917 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-22 20:42:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2021-11-22 20:42:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 2074. [2021-11-22 20:42:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2049 states have (on average 1.250854075158614) internal successors, (2563), 2073 states have internal predecessors, (2563), 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 20:42:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2563 transitions. [2021-11-22 20:42:04,850 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2563 transitions. Word has length 142 [2021-11-22 20:42:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:04,850 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 2563 transitions. [2021-11-22 20:42:04,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 20:42:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2563 transitions. [2021-11-22 20:42:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 20:42:04,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:04,852 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, 1, 1, 1, 1, 1, 1, 1, 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 20:42:04,877 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 20:42:05,069 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 20:42:05,070 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -537971062, now seen corresponding path program 1 times [2021-11-22 20:42:05,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:05,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467769394] [2021-11-22 20:42:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:05,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:05,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365989979] [2021-11-22 20:42:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:05,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:05,126 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 20:42:05,127 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 20:42:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:05,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:42:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:05,847 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 20:42:05,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:05,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:05,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467769394] [2021-11-22 20:42:05,848 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:05,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365989979] [2021-11-22 20:42:05,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365989979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:05,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:05,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:42:05,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64182339] [2021-11-22 20:42:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:05,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:42:05,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:42:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:42:05,849 INFO L87 Difference]: Start difference. First operand 2074 states and 2563 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 20:42:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:07,766 INFO L93 Difference]: Finished difference Result 5170 states and 6307 transitions. [2021-11-22 20:42:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:42:07,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 142 [2021-11-22 20:42:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:07,771 INFO L225 Difference]: With dead ends: 5170 [2021-11-22 20:42:07,771 INFO L226 Difference]: Without dead ends: 3145 [2021-11-22 20:42:07,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 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 20:42:07,774 INFO L933 BasicCegarLoop]: 1315 mSDtfsCounter, 1005 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:07,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 4328 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 20:42:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-11-22 20:42:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 2062. [2021-11-22 20:42:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2037 states have (on average 1.2204221894943545) internal successors, (2486), 2061 states have internal predecessors, (2486), 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 20:42:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2486 transitions. [2021-11-22 20:42:07,861 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2486 transitions. Word has length 142 [2021-11-22 20:42:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:07,861 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 2486 transitions. [2021-11-22 20:42:07,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 20:42:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2486 transitions. [2021-11-22 20:42:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 20:42:07,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:07,863 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, 1, 1, 1, 1, 1, 1, 1, 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 20:42:07,884 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 20:42:08,063 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 20:42:08,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -955367668, now seen corresponding path program 1 times [2021-11-22 20:42:08,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:08,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017606218] [2021-11-22 20:42:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:08,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:08,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:08,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450858215] [2021-11-22 20:42:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:08,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:08,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:08,112 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 20:42:08,113 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 20:42:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-22 20:42:08,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:09,236 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 32 treesize of output 24 [2021-11-22 20:42:09,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-22 20:42:09,319 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 20:42:09,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:09,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:09,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017606218] [2021-11-22 20:42:09,320 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:09,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450858215] [2021-11-22 20:42:09,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450858215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:09,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:09,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:42:09,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783705400] [2021-11-22 20:42:09,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:09,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:42:09,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:09,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:42:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:42:09,321 INFO L87 Difference]: Start difference. First operand 2062 states and 2486 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 20:42:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:14,254 INFO L93 Difference]: Finished difference Result 7495 states and 8952 transitions. [2021-11-22 20:42:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-22 20:42:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 142 [2021-11-22 20:42:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:14,263 INFO L225 Difference]: With dead ends: 7495 [2021-11-22 20:42:14,264 INFO L226 Difference]: Without dead ends: 5626 [2021-11-22 20:42:14,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=525, Invalid=2025, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 20:42:14,269 INFO L933 BasicCegarLoop]: 1921 mSDtfsCounter, 5693 mSDsluCounter, 13849 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5693 SdHoareTripleChecker+Valid, 15770 SdHoareTripleChecker+Invalid, 5127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:14,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5693 Valid, 15770 Invalid, 5127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 4722 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 20:42:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2021-11-22 20:42:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 2083. [2021-11-22 20:42:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2058 states have (on average 1.2201166180758019) internal successors, (2511), 2082 states have internal predecessors, (2511), 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 20:42:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2511 transitions. [2021-11-22 20:42:14,388 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2511 transitions. Word has length 142 [2021-11-22 20:42:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:14,388 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2511 transitions. [2021-11-22 20:42:14,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 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 20:42:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2511 transitions. [2021-11-22 20:42:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:42:14,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:14,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:14,418 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 20:42:14,607 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 20:42:14,607 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash -647036632, now seen corresponding path program 1 times [2021-11-22 20:42:14,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:14,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035089753] [2021-11-22 20:42:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:14,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:14,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100452878] [2021-11-22 20:42:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:14,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:14,655 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 20:42:14,675 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 20:42:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:15,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-22 20:42:15,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:15,635 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:42:15,635 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 20:42:15,711 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 20:42:15,780 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 20:42:15,836 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 20:42:15,953 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 20:42:15,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:15,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:15,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035089753] [2021-11-22 20:42:15,953 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:15,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100452878] [2021-11-22 20:42:15,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100452878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:15,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:15,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 20:42:15,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209222416] [2021-11-22 20:42:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:15,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 20:42:15,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 20:42:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-22 20:42:15,954 INFO L87 Difference]: Start difference. First operand 2083 states and 2511 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 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 20:42:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:27,536 INFO L93 Difference]: Finished difference Result 11913 states and 14253 transitions. [2021-11-22 20:42:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-22 20:42:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 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 143 [2021-11-22 20:42:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:27,552 INFO L225 Difference]: With dead ends: 11913 [2021-11-22 20:42:27,552 INFO L226 Difference]: Without dead ends: 10000 [2021-11-22 20:42:27,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3689 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2011, Invalid=9119, Unknown=0, NotChecked=0, Total=11130 [2021-11-22 20:42:27,558 INFO L933 BasicCegarLoop]: 1869 mSDtfsCounter, 24483 mSDsluCounter, 22408 mSDsCounter, 0 mSdLazyCounter, 6802 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24483 SdHoareTripleChecker+Valid, 24277 SdHoareTripleChecker+Invalid, 7376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 6802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:27,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24483 Valid, 24277 Invalid, 7376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [574 Valid, 6802 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-22 20:42:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-11-22 20:42:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 6803. [2021-11-22 20:42:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6803 states, 6778 states have (on average 1.219976394216583) internal successors, (8269), 6802 states have internal predecessors, (8269), 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 20:42:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 8269 transitions. [2021-11-22 20:42:27,951 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 8269 transitions. Word has length 143 [2021-11-22 20:42:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:27,951 INFO L470 AbstractCegarLoop]: Abstraction has 6803 states and 8269 transitions. [2021-11-22 20:42:27,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 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 20:42:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 8269 transitions. [2021-11-22 20:42:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-22 20:42:27,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:27,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:27,977 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 20:42:28,159 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 20:42:28,160 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash -141900050, now seen corresponding path program 1 times [2021-11-22 20:42:28,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:28,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559371152] [2021-11-22 20:42:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:28,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:28,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:28,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861872446] [2021-11-22 20:42:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:28,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:28,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:28,204 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 20:42:28,205 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 20:42:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:28,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-22 20:42:28,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:29,256 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 37 treesize of output 36 [2021-11-22 20:42:29,259 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 20:42:29,360 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 37 treesize of output 36 [2021-11-22 20:42:29,399 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 20:42:29,547 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 20:42:29,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:29,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:29,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559371152] [2021-11-22 20:42:29,547 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861872446] [2021-11-22 20:42:29,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861872446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:29,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:29,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-22 20:42:29,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762544098] [2021-11-22 20:42:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:29,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 20:42:29,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 20:42:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:42:29,549 INFO L87 Difference]: Start difference. First operand 6803 states and 8269 transitions. Second operand has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 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 20:42:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:36,048 INFO L93 Difference]: Finished difference Result 24185 states and 29297 transitions. [2021-11-22 20:42:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 20:42:36,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 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 145 [2021-11-22 20:42:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:36,072 INFO L225 Difference]: With dead ends: 24185 [2021-11-22 20:42:36,072 INFO L226 Difference]: Without dead ends: 18357 [2021-11-22 20:42:36,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=759, Invalid=4353, Unknown=0, NotChecked=0, Total=5112 [2021-11-22 20:42:36,082 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 6393 mSDsluCounter, 27271 mSDsCounter, 0 mSdLazyCounter, 6402 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6393 SdHoareTripleChecker+Valid, 29281 SdHoareTripleChecker+Invalid, 6678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 6402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:36,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6393 Valid, 29281 Invalid, 6678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 6402 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-22 20:42:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18357 states. [2021-11-22 20:42:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18357 to 13546. [2021-11-22 20:42:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13521 states have (on average 1.2195103912432512) internal successors, (16489), 13545 states have internal predecessors, (16489), 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 20:42:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 16489 transitions. [2021-11-22 20:42:36,876 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 16489 transitions. Word has length 145 [2021-11-22 20:42:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 13546 states and 16489 transitions. [2021-11-22 20:42:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 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 20:42:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 16489 transitions. [2021-11-22 20:42:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:42:36,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:36,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:36,905 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 20:42:37,095 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 20:42:37,096 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1292916107, now seen corresponding path program 1 times [2021-11-22 20:42:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348319091] [2021-11-22 20:42:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:37,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:37,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095712162] [2021-11-22 20:42:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:37,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:37,154 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 20:42:37,155 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 20:42:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:37,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 20:42:37,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:37,914 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 20:42:37,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:37,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:37,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348319091] [2021-11-22 20:42:37,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:37,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095712162] [2021-11-22 20:42:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095712162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:37,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:37,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:42:37,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628709407] [2021-11-22 20:42:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:37,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:42:37,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:42:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:42:37,917 INFO L87 Difference]: Start difference. First operand 13546 states and 16489 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 20:42:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:39,456 INFO L93 Difference]: Finished difference Result 40246 states and 49017 transitions. [2021-11-22 20:42:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:42:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2021-11-22 20:42:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:39,491 INFO L225 Difference]: With dead ends: 40246 [2021-11-22 20:42:39,491 INFO L226 Difference]: Without dead ends: 26836 [2021-11-22 20:42:39,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 20:42:39,504 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 1114 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:39,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 2456 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:42:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26836 states. [2021-11-22 20:42:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26836 to 13678. [2021-11-22 20:42:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13678 states, 13653 states have (on average 1.2173881198271441) internal successors, (16621), 13677 states have internal predecessors, (16621), 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 20:42:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 16621 transitions. [2021-11-22 20:42:40,406 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 16621 transitions. Word has length 146 [2021-11-22 20:42:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:40,406 INFO L470 AbstractCegarLoop]: Abstraction has 13678 states and 16621 transitions. [2021-11-22 20:42:40,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 20:42:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 16621 transitions. [2021-11-22 20:42:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:42:40,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:40,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:40,435 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 20:42:40,623 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 20:42:40,624 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2055565825, now seen corresponding path program 1 times [2021-11-22 20:42:40,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:40,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739493217] [2021-11-22 20:42:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:40,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:40,668 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636319525] [2021-11-22 20:42:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:40,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:40,670 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 20:42:40,699 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 20:42:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-22 20:42:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:41,501 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 20:42:41,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:41,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739493217] [2021-11-22 20:42:41,501 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636319525] [2021-11-22 20:42:41,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636319525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:41,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:41,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:42:41,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414878258] [2021-11-22 20:42:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:41,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:42:41,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:41,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:42:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:42:41,503 INFO L87 Difference]: Start difference. First operand 13678 states and 16621 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 20:42:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:43,912 INFO L93 Difference]: Finished difference Result 45941 states and 55701 transitions. [2021-11-22 20:42:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 20:42:43,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 146 [2021-11-22 20:42:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:43,957 INFO L225 Difference]: With dead ends: 45941 [2021-11-22 20:42:43,957 INFO L226 Difference]: Without dead ends: 32287 [2021-11-22 20:42:43,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:42:43,972 INFO L933 BasicCegarLoop]: 2047 mSDtfsCounter, 2737 mSDsluCounter, 9033 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 11080 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:43,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2737 Valid, 11080 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:42:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32287 states. [2021-11-22 20:42:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32287 to 13678. [2021-11-22 20:42:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13678 states, 13653 states have (on average 1.2153372885080203) internal successors, (16593), 13677 states have internal predecessors, (16593), 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 20:42:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 16593 transitions. [2021-11-22 20:42:44,913 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 16593 transitions. Word has length 146 [2021-11-22 20:42:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:44,913 INFO L470 AbstractCegarLoop]: Abstraction has 13678 states and 16593 transitions. [2021-11-22 20:42:44,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 20:42:44,913 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 16593 transitions. [2021-11-22 20:42:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:42:44,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:44,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:44,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-22 20:42:45,131 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 20:42:45,131 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 949204755, now seen corresponding path program 1 times [2021-11-22 20:42:45,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:45,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217061465] [2021-11-22 20:42:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:45,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:45,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:45,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457560404] [2021-11-22 20:42:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:45,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:45,176 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 20:42:45,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-22 20:42:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:45,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-22 20:42:45,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:45,875 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 20:42:46,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:46,076 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 25 treesize of output 24 [2021-11-22 20:42:46,220 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:42:46,220 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 28 treesize of output 27 [2021-11-22 20:42:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:46,232 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 23 treesize of output 22 [2021-11-22 20:42:46,300 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:42:46,301 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 20:42:46,349 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:42:46,350 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 22 treesize of output 24 [2021-11-22 20:42:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:46,519 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 23 treesize of output 22 [2021-11-22 20:42:46,676 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 41 treesize of output 29 [2021-11-22 20:42:46,791 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 20:42:46,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:46,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:46,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217061465] [2021-11-22 20:42:46,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:46,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457560404] [2021-11-22 20:42:46,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457560404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:46,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:46,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 20:42:46,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137829089] [2021-11-22 20:42:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:46,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 20:42:46,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 20:42:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-22 20:42:46,795 INFO L87 Difference]: Start difference. First operand 13678 states and 16593 transitions. Second operand has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 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 20:42:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:50,184 INFO L93 Difference]: Finished difference Result 27345 states and 33173 transitions. [2021-11-22 20:42:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 20:42:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 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 146 [2021-11-22 20:42:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:50,204 INFO L225 Difference]: With dead ends: 27345 [2021-11-22 20:42:50,204 INFO L226 Difference]: Without dead ends: 13679 [2021-11-22 20:42:50,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:42:50,217 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 310 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 9421 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:50,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 9421 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-22 20:42:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13679 states. [2021-11-22 20:42:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13679 to 13679. [2021-11-22 20:42:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13679 states, 13654 states have (on average 1.2153215175040282) internal successors, (16594), 13678 states have internal predecessors, (16594), 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 20:42:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13679 states to 13679 states and 16594 transitions. [2021-11-22 20:42:51,050 INFO L78 Accepts]: Start accepts. Automaton has 13679 states and 16594 transitions. Word has length 146 [2021-11-22 20:42:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:51,050 INFO L470 AbstractCegarLoop]: Abstraction has 13679 states and 16594 transitions. [2021-11-22 20:42:51,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 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 20:42:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 13679 states and 16594 transitions. [2021-11-22 20:42:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:42:51,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:51,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:51,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-22 20:42:51,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:51,268 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash -838665067, now seen corresponding path program 1 times [2021-11-22 20:42:51,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:51,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138228082] [2021-11-22 20:42:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:51,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:51,386 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 20:42:51,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138228082] [2021-11-22 20:42:51,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138228082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:51,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:51,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:42:51,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524411587] [2021-11-22 20:42:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:51,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:42:51,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:42:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:42:51,388 INFO L87 Difference]: Start difference. First operand 13679 states and 16594 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 20:42:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:52,378 INFO L93 Difference]: Finished difference Result 27339 states and 33167 transitions. [2021-11-22 20:42:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:42:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2021-11-22 20:42:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:52,399 INFO L225 Difference]: With dead ends: 27339 [2021-11-22 20:42:52,399 INFO L226 Difference]: Without dead ends: 13677 [2021-11-22 20:42:52,413 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 20:42:52,413 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 0 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:52,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2483 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:42:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13677 states. [2021-11-22 20:42:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13677 to 13676. [2021-11-22 20:42:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13676 states, 13651 states have (on average 1.215295582741191) internal successors, (16590), 13675 states have internal predecessors, (16590), 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 20:42:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13676 states to 13676 states and 16590 transitions. [2021-11-22 20:42:53,256 INFO L78 Accepts]: Start accepts. Automaton has 13676 states and 16590 transitions. Word has length 146 [2021-11-22 20:42:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:53,256 INFO L470 AbstractCegarLoop]: Abstraction has 13676 states and 16590 transitions. [2021-11-22 20:42:53,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 20:42:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13676 states and 16590 transitions. [2021-11-22 20:42:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 20:42:53,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:53,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:53,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 20:42:53,259 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 958159359, now seen corresponding path program 1 times [2021-11-22 20:42:53,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:53,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386120455] [2021-11-22 20:42:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:53,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:53,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:53,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910219395] [2021-11-22 20:42:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:53,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:53,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:53,310 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:42:53,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-22 20:42:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:54,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-22 20:42:54,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:54,016 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 20:42:54,112 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:42:54,112 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 20:42:54,137 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 20:42:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:54,212 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 34 treesize of output 27 [2021-11-22 20:42:54,344 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:42:54,345 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 37 treesize of output 30 [2021-11-22 20:42:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:54,358 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 20:42:54,418 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:42:54,418 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 20:42:54,457 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:42:54,457 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 27 treesize of output 27 [2021-11-22 20:42:54,495 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 20:42:54,618 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 20:42:54,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:54,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:54,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386120455] [2021-11-22 20:42:54,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:54,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910219395] [2021-11-22 20:42:54,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910219395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:54,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:54,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 20:42:54,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067603845] [2021-11-22 20:42:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:54,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 20:42:54,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:54,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 20:42:54,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:42:54,620 INFO L87 Difference]: Start difference. First operand 13676 states and 16590 transitions. Second operand has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 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 20:42:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:58,548 INFO L93 Difference]: Finished difference Result 28175 states and 33997 transitions. [2021-11-22 20:42:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 20:42:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 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 149 [2021-11-22 20:42:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:58,567 INFO L225 Difference]: With dead ends: 28175 [2021-11-22 20:42:58,567 INFO L226 Difference]: Without dead ends: 14547 [2021-11-22 20:42:58,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-11-22 20:42:58,578 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 311 mSDsluCounter, 9995 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 11268 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:58,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 11268 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-22 20:42:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14547 states. [2021-11-22 20:42:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14547 to 13676. [2021-11-22 20:42:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13676 states, 13651 states have (on average 1.2152223280345762) internal successors, (16589), 13675 states have internal predecessors, (16589), 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 20:42:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13676 states to 13676 states and 16589 transitions. [2021-11-22 20:42:59,437 INFO L78 Accepts]: Start accepts. Automaton has 13676 states and 16589 transitions. Word has length 149 [2021-11-22 20:42:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:59,437 INFO L470 AbstractCegarLoop]: Abstraction has 13676 states and 16589 transitions. [2021-11-22 20:42:59,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 states have internal predecessors, (149), 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 20:42:59,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13676 states and 16589 transitions. [2021-11-22 20:42:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-22 20:42:59,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:59,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:59,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-22 20:42:59,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 20:42:59,663 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:42:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1854624103, now seen corresponding path program 1 times [2021-11-22 20:42:59,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:59,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091340646] [2021-11-22 20:42:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:59,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:59,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:59,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923493050] [2021-11-22 20:42:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:59,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:59,708 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:42:59,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 20:43:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:00,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 148 conjunts are in the unsatisfiable core [2021-11-22 20:43:00,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:00,428 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 20:43:00,769 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:43:00,769 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 21 [2021-11-22 20:43:00,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-22 20:43:00,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:00,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-22 20:43:01,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,302 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 0 case distinctions, treesize of input 48 treesize of output 53 [2021-11-22 20:43:01,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,382 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 0 case distinctions, treesize of input 46 treesize of output 51 [2021-11-22 20:43:01,532 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:43:01,533 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 18 treesize of output 18 [2021-11-22 20:43:01,631 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:43:01,632 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 45 treesize of output 43 [2021-11-22 20:43:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:01,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:02,001 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 0 case distinctions, treesize of input 46 treesize of output 51 [2021-11-22 20:43:02,589 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 20:43:02,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:02,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091340646] [2021-11-22 20:43:02,589 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923493050] [2021-11-22 20:43:02,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923493050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:02,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:02,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-22 20:43:02,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474489494] [2021-11-22 20:43:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:02,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 20:43:02,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 20:43:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-22 20:43:02,590 INFO L87 Difference]: Start difference. First operand 13676 states and 16589 transitions. Second operand has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 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 20:43:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:10,110 INFO L93 Difference]: Finished difference Result 22240 states and 26914 transitions. [2021-11-22 20:43:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 20:43:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 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 151 [2021-11-22 20:43:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:10,132 INFO L225 Difference]: With dead ends: 22240 [2021-11-22 20:43:10,133 INFO L226 Difference]: Without dead ends: 15596 [2021-11-22 20:43:10,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 20:43:10,141 INFO L933 BasicCegarLoop]: 1466 mSDtfsCounter, 1508 mSDsluCounter, 12153 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 13619 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:10,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 13619 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-22 20:43:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2021-11-22 20:43:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 13925. [2021-11-22 20:43:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13925 states, 13900 states have (on average 1.2145323741007195) internal successors, (16882), 13924 states have internal predecessors, (16882), 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 20:43:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 16882 transitions. [2021-11-22 20:43:10,973 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 16882 transitions. Word has length 151 [2021-11-22 20:43:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:10,974 INFO L470 AbstractCegarLoop]: Abstraction has 13925 states and 16882 transitions. [2021-11-22 20:43:10,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 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 20:43:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 16882 transitions. [2021-11-22 20:43:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-22 20:43:10,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:10,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:11,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-22 20:43:11,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 20:43:11,184 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:43:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1516336553, now seen corresponding path program 1 times [2021-11-22 20:43:11,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:11,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063273274] [2021-11-22 20:43:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:11,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:11,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322897350] [2021-11-22 20:43:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:11,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:11,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:11,232 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:11,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-22 20:43:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-22 20:43:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:12,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:12,304 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 44 treesize of output 43 [2021-11-22 20:43:12,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:12,308 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 33 treesize of output 32 [2021-11-22 20:43:12,587 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 20:43:12,590 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 20:43:12,621 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 36 treesize of output 28 [2021-11-22 20:43:12,623 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 28 treesize of output 20 [2021-11-22 20:43:12,731 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 20:43:12,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:12,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:12,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063273274] [2021-11-22 20:43:12,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:12,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322897350] [2021-11-22 20:43:12,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322897350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:12,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:12,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 20:43:12,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133441359] [2021-11-22 20:43:12,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:12,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 20:43:12,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 20:43:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:43:12,734 INFO L87 Difference]: Start difference. First operand 13925 states and 16882 transitions. Second operand has 16 states, 16 states have (on average 9.4375) internal successors, (151), 16 states have internal predecessors, (151), 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 20:43:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:20,882 INFO L93 Difference]: Finished difference Result 44506 states and 53541 transitions. [2021-11-22 20:43:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-22 20:43:20,883 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.4375) internal successors, (151), 16 states have internal predecessors, (151), 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 151 [2021-11-22 20:43:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:20,929 INFO L225 Difference]: With dead ends: 44506 [2021-11-22 20:43:20,929 INFO L226 Difference]: Without dead ends: 31073 [2021-11-22 20:43:20,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 20:43:20,947 INFO L933 BasicCegarLoop]: 2164 mSDtfsCounter, 6510 mSDsluCounter, 16350 mSDsCounter, 0 mSdLazyCounter, 5845 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6510 SdHoareTripleChecker+Valid, 18514 SdHoareTripleChecker+Invalid, 6311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 5845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:20,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6510 Valid, 18514 Invalid, 6311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 5845 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-22 20:43:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31073 states. [2021-11-22 20:43:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31073 to 27349. [2021-11-22 20:43:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27349 states, 27324 states have (on average 1.214756258234519) internal successors, (33192), 27348 states have internal predecessors, (33192), 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 20:43:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27349 states to 27349 states and 33192 transitions. [2021-11-22 20:43:22,725 INFO L78 Accepts]: Start accepts. Automaton has 27349 states and 33192 transitions. Word has length 151 [2021-11-22 20:43:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:22,725 INFO L470 AbstractCegarLoop]: Abstraction has 27349 states and 33192 transitions. [2021-11-22 20:43:22,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.4375) internal successors, (151), 16 states have internal predecessors, (151), 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 20:43:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 27349 states and 33192 transitions. [2021-11-22 20:43:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-22 20:43:22,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:22,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:22,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-22 20:43:22,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:22,936 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:43:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -553950441, now seen corresponding path program 1 times [2021-11-22 20:43:22,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:22,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769121454] [2021-11-22 20:43:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:22,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:22,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:22,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806160899] [2021-11-22 20:43:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:22,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:22,982 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:22,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-22 20:43:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:23,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 170 conjunts are in the unsatisfiable core [2021-11-22 20:43:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:23,887 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 20:43:23,934 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:43:23,936 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 20:43:24,175 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-11-22 20:43:24,176 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 10 case distinctions, treesize of input 38 treesize of output 57 [2021-11-22 20:43:25,000 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-22 20:43:25,000 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 5 case distinctions, treesize of input 34 treesize of output 37 [2021-11-22 20:43:25,278 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 20:43:25,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-22 20:43:25,355 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:43:25,356 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 64 treesize of output 66 [2021-11-22 20:43:25,366 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:43:25,366 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 58 treesize of output 60 [2021-11-22 20:43:25,376 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:43:25,376 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 52 treesize of output 54 [2021-11-22 20:43:26,348 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 56 treesize of output 55 [2021-11-22 20:43:26,363 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:43:26,364 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 45 treesize of output 51 [2021-11-22 20:43:26,367 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 46 treesize of output 45 [2021-11-22 20:43:26,425 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 12 treesize of output 6 [2021-11-22 20:43:26,430 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 11 treesize of output 5 [2021-11-22 20:43:26,443 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 36 treesize of output 28 [2021-11-22 20:43:26,445 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 28 treesize of output 20 [2021-11-22 20:43:26,569 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 20:43:26,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:26,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769121454] [2021-11-22 20:43:26,570 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806160899] [2021-11-22 20:43:26,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806160899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:26,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:26,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-22 20:43:26,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466218246] [2021-11-22 20:43:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:26,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 20:43:26,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 20:43:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-22 20:43:26,571 INFO L87 Difference]: Start difference. First operand 27349 states and 33192 transitions. Second operand has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 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 20:43:41,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:47,103 INFO L93 Difference]: Finished difference Result 72950 states and 88114 transitions. [2021-11-22 20:43:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-22 20:43:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 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 151 [2021-11-22 20:43:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:47,173 INFO L225 Difference]: With dead ends: 72950 [2021-11-22 20:43:47,174 INFO L226 Difference]: Without dead ends: 46539 [2021-11-22 20:43:47,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=659, Invalid=5193, Unknown=0, NotChecked=0, Total=5852 [2021-11-22 20:43:47,201 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 3791 mSDsluCounter, 25304 mSDsCounter, 0 mSdLazyCounter, 8965 mSolverCounterSat, 215 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3791 SdHoareTripleChecker+Valid, 27465 SdHoareTripleChecker+Invalid, 14296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 8965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5115 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:47,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3791 Valid, 27465 Invalid, 14296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 8965 Invalid, 1 Unknown, 5115 Unchecked, 14.1s Time] [2021-11-22 20:43:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46539 states. [2021-11-22 20:43:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46539 to 40550. [2021-11-22 20:43:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40550 states, 40525 states have (on average 1.214904380012338) internal successors, (49234), 40549 states have internal predecessors, (49234), 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 20:43:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40550 states to 40550 states and 49234 transitions. [2021-11-22 20:43:49,990 INFO L78 Accepts]: Start accepts. Automaton has 40550 states and 49234 transitions. Word has length 151 [2021-11-22 20:43:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:49,990 INFO L470 AbstractCegarLoop]: Abstraction has 40550 states and 49234 transitions. [2021-11-22 20:43:49,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 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 20:43:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 40550 states and 49234 transitions. [2021-11-22 20:43:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 20:43:49,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:49,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:50,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-22 20:43:50,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:50,197 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:43:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash 409110865, now seen corresponding path program 1 times [2021-11-22 20:43:50,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:50,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263574768] [2021-11-22 20:43:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:50,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:50,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089710225] [2021-11-22 20:43:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:50,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:50,254 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-22 20:43:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:50,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-22 20:43:50,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:50,976 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 20:43:51,259 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:43:51,260 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 20:43:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:51,279 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 20:43:51,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:51,374 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 20:43:51,572 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:43:51,573 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 28 [2021-11-22 20:43:51,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:43:51,595 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 20:43:51,691 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:43:51,692 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 20:43:51,737 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:43:51,737 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 20:43:51,769 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 10 treesize of output 6 [2021-11-22 20:43:51,894 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 20:43:51,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:51,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263574768] [2021-11-22 20:43:51,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089710225] [2021-11-22 20:43:51,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089710225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:51,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:51,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:43:51,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792978742] [2021-11-22 20:43:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:51,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:43:51,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:43:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:43:51,896 INFO L87 Difference]: Start difference. First operand 40550 states and 49234 transitions. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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 20:43:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:56,783 INFO L93 Difference]: Finished difference Result 63007 states and 75959 transitions. [2021-11-22 20:43:56,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 20:43:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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 153 [2021-11-22 20:43:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:56,842 INFO L225 Difference]: With dead ends: 63007 [2021-11-22 20:43:56,843 INFO L226 Difference]: Without dead ends: 43110 [2021-11-22 20:43:56,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:43:56,865 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 279 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 5529 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:56,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 5529 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 20:43:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43110 states. [2021-11-22 20:43:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43110 to 40569. [2021-11-22 20:43:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40569 states, 40544 states have (on average 1.2148283346487767) internal successors, (49254), 40568 states have internal predecessors, (49254), 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 20:43:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40569 states to 40569 states and 49254 transitions. [2021-11-22 20:43:59,593 INFO L78 Accepts]: Start accepts. Automaton has 40569 states and 49254 transitions. Word has length 153 [2021-11-22 20:43:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:59,593 INFO L470 AbstractCegarLoop]: Abstraction has 40569 states and 49254 transitions. [2021-11-22 20:43:59,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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 20:43:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 40569 states and 49254 transitions. [2021-11-22 20:43:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 20:43:59,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:59,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:59,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-22 20:43:59,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:59,801 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:43:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 122366673, now seen corresponding path program 1 times [2021-11-22 20:43:59,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:59,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483068253] [2021-11-22 20:43:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:59,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:59,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:59,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970070560] [2021-11-22 20:43:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:59,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:59,846 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:59,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-22 20:44:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:44:00,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 214 conjunts are in the unsatisfiable core [2021-11-22 20:44:00,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:44:00,666 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 20:44:00,706 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:44:00,706 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 20:44:00,807 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 20:44:00,807 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 20:44:00,979 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-22 20:44:00,980 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 21 treesize of output 21 [2021-11-22 20:44:01,017 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:44:01,018 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 20:44:01,035 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 17 treesize of output 16 [2021-11-22 20:44:01,037 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 11 treesize of output 10 [2021-11-22 20:44:01,266 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 23 treesize of output 19 [2021-11-22 20:44:01,268 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 11 treesize of output 7 [2021-11-22 20:44:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:01,622 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 52 treesize of output 51 [2021-11-22 20:44:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:01,626 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 41 treesize of output 40 [2021-11-22 20:44:02,206 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 20:44:02,208 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 20:44:02,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-22 20:44:02,233 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 28 treesize of output 20 [2021-11-22 20:44:02,304 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 20:44:02,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:44:02,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:44:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483068253] [2021-11-22 20:44:02,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:44:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970070560] [2021-11-22 20:44:02,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970070560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:44:02,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:44:02,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-22 20:44:02,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937085038] [2021-11-22 20:44:02,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:44:02,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 20:44:02,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:44:02,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 20:44:02,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2021-11-22 20:44:02,306 INFO L87 Difference]: Start difference. First operand 40569 states and 49254 transitions. Second operand has 30 states, 30 states have (on average 5.1) internal successors, (153), 30 states have internal predecessors, (153), 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 20:44:21,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:44:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:44:42,447 INFO L93 Difference]: Finished difference Result 151289 states and 182690 transitions. [2021-11-22 20:44:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2021-11-22 20:44:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.1) internal successors, (153), 30 states have internal predecessors, (153), 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 153 [2021-11-22 20:44:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:44:42,650 INFO L225 Difference]: With dead ends: 151289 [2021-11-22 20:44:42,650 INFO L226 Difference]: Without dead ends: 112845 [2021-11-22 20:44:42,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29296 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=7611, Invalid=60771, Unknown=0, NotChecked=0, Total=68382 [2021-11-22 20:44:42,692 INFO L933 BasicCegarLoop]: 1778 mSDtfsCounter, 21421 mSDsluCounter, 33671 mSDsCounter, 0 mSdLazyCounter, 18936 mSolverCounterSat, 3170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21421 SdHoareTripleChecker+Valid, 35449 SdHoareTripleChecker+Invalid, 22107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3170 IncrementalHoareTripleChecker+Valid, 18936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:44:42,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21421 Valid, 35449 Invalid, 22107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3170 Valid, 18936 Invalid, 1 Unknown, 0 Unchecked, 21.0s Time] [2021-11-22 20:44:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112845 states. [2021-11-22 20:44:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112845 to 77637. [2021-11-22 20:44:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77637 states, 77612 states have (on average 1.2125444518888833) internal successors, (94108), 77636 states have internal predecessors, (94108), 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 20:44:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77637 states to 77637 states and 94108 transitions. [2021-11-22 20:44:48,736 INFO L78 Accepts]: Start accepts. Automaton has 77637 states and 94108 transitions. Word has length 153 [2021-11-22 20:44:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:44:48,736 INFO L470 AbstractCegarLoop]: Abstraction has 77637 states and 94108 transitions. [2021-11-22 20:44:48,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.1) internal successors, (153), 30 states have internal predecessors, (153), 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 20:44:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 77637 states and 94108 transitions. [2021-11-22 20:44:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 20:44:48,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:44:48,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:48,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-22 20:44:48,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:44:48,944 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:44:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:44:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1509499773, now seen corresponding path program 1 times [2021-11-22 20:44:48,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:44:48,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402542942] [2021-11-22 20:44:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:44:48,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:44:48,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:44:48,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124587107] [2021-11-22 20:44:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:44:48,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:44:48,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:44:48,994 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:44:48,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-22 20:44:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:44:49,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-22 20:44:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:44:49,718 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 20:44:49,970 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:44:49,971 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 17 treesize of output 19 [2021-11-22 20:44:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:50,032 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 25 treesize of output 24 [2021-11-22 20:44:50,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:50,140 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 25 treesize of output 24 [2021-11-22 20:44:50,313 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:44:50,313 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 20:44:50,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:50,349 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 25 treesize of output 24 [2021-11-22 20:44:50,414 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:44:50,414 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 28 treesize of output 27 [2021-11-22 20:44:50,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:44:50,437 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 23 treesize of output 22 [2021-11-22 20:44:50,540 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:44:50,540 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 20:44:50,583 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:44:50,584 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 20 treesize of output 22 [2021-11-22 20:44:50,759 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 20:44:50,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:44:50,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:44:50,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402542942] [2021-11-22 20:44:50,760 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:44:50,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124587107] [2021-11-22 20:44:50,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124587107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:44:50,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:44:50,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 20:44:50,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407055967] [2021-11-22 20:44:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:44:50,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 20:44:50,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:44:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 20:44:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:44:50,761 INFO L87 Difference]: Start difference. First operand 77637 states and 94108 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 20:45:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:45:01,830 INFO L93 Difference]: Finished difference Result 144259 states and 173898 transitions. [2021-11-22 20:45:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 20:45:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 154 [2021-11-22 20:45:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:45:01,971 INFO L225 Difference]: With dead ends: 144259 [2021-11-22 20:45:01,971 INFO L226 Difference]: Without dead ends: 82354 [2021-11-22 20:45:02,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:45:02,015 INFO L933 BasicCegarLoop]: 1229 mSDtfsCounter, 204 mSDsluCounter, 6640 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 7869 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:45:02,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 7869 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-22 20:45:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82354 states. [2021-11-22 20:45:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82354 to 77385. [2021-11-22 20:45:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77385 states, 77360 states have (on average 1.212629265770424) internal successors, (93809), 77384 states have internal predecessors, (93809), 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 20:45:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77385 states to 77385 states and 93809 transitions. [2021-11-22 20:45:08,063 INFO L78 Accepts]: Start accepts. Automaton has 77385 states and 93809 transitions. Word has length 154 [2021-11-22 20:45:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:45:08,063 INFO L470 AbstractCegarLoop]: Abstraction has 77385 states and 93809 transitions. [2021-11-22 20:45:08,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 20:45:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 77385 states and 93809 transitions. [2021-11-22 20:45:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 20:45:08,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:45:08,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:08,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-22 20:45:08,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-22 20:45:08,271 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:45:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:45:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash 421625861, now seen corresponding path program 1 times [2021-11-22 20:45:08,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:45:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701032336] [2021-11-22 20:45:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:08,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:45:08,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:45:08,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393088489] [2021-11-22 20:45:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:08,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:45:08,317 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:45:08,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-22 20:45:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:45:09,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 142 conjunts are in the unsatisfiable core [2021-11-22 20:45:09,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:45:09,256 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 20:45:09,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:09,316 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 20:45:09,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:09,431 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 20:45:09,473 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:45:09,474 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 27 treesize of output 26 [2021-11-22 20:45:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:09,486 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 20:45:09,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:09,594 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 20:45:09,958 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:45:09,958 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 40 treesize of output 46 [2021-11-22 20:45:09,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:09,961 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 41 treesize of output 40 [2021-11-22 20:45:09,970 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 10 treesize of output 6 [2021-11-22 20:45:10,161 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 26 treesize of output 25 [2021-11-22 20:45:10,163 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 20:45:10,182 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 12 treesize of output 6 [2021-11-22 20:45:10,188 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 11 treesize of output 5 [2021-11-22 20:45:10,199 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 8 treesize of output 4 [2021-11-22 20:45:10,295 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 20:45:10,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:45:10,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:45:10,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701032336] [2021-11-22 20:45:10,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:45:10,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393088489] [2021-11-22 20:45:10,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393088489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:45:10,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:45:10,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-22 20:45:10,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883546973] [2021-11-22 20:45:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:45:10,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 20:45:10,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:45:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 20:45:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:45:10,297 INFO L87 Difference]: Start difference. First operand 77385 states and 93809 transitions. Second operand has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 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 20:45:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:45:32,164 INFO L93 Difference]: Finished difference Result 199585 states and 240237 transitions. [2021-11-22 20:45:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 20:45:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 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 154 [2021-11-22 20:45:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:45:32,385 INFO L225 Difference]: With dead ends: 199585 [2021-11-22 20:45:32,385 INFO L226 Difference]: Without dead ends: 138529 [2021-11-22 20:45:32,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 20:45:32,438 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 9987 mSDsluCounter, 15174 mSDsCounter, 0 mSdLazyCounter, 6736 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9987 SdHoareTripleChecker+Valid, 16889 SdHoareTripleChecker+Invalid, 7379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 6736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:45:32,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9987 Valid, 16889 Invalid, 7379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [643 Valid, 6736 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-11-22 20:45:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138529 states. [2021-11-22 20:45:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138529 to 66175. [2021-11-22 20:45:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66175 states, 66150 states have (on average 1.2127437641723355) internal successors, (80223), 66174 states have internal predecessors, (80223), 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 20:45:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66175 states to 66175 states and 80223 transitions. [2021-11-22 20:45:38,296 INFO L78 Accepts]: Start accepts. Automaton has 66175 states and 80223 transitions. Word has length 154 [2021-11-22 20:45:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:45:38,296 INFO L470 AbstractCegarLoop]: Abstraction has 66175 states and 80223 transitions. [2021-11-22 20:45:38,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 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 20:45:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 66175 states and 80223 transitions. [2021-11-22 20:45:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-22 20:45:38,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:45:38,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:38,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-22 20:45:38,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:38,502 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:45:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:45:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1955033739, now seen corresponding path program 1 times [2021-11-22 20:45:38,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:45:38,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637559021] [2021-11-22 20:45:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:38,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:45:38,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:45:38,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839872287] [2021-11-22 20:45:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:38,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:45:38,547 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:45:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-22 20:45:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:45:39,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-22 20:45:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:45:39,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:39,741 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 20:45:40,084 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 20:45:40,147 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 20:45:40,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:45:40,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:45:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637559021] [2021-11-22 20:45:40,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:45:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839872287] [2021-11-22 20:45:40,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839872287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:45:40,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:45:40,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 20:45:40,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945190158] [2021-11-22 20:45:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:45:40,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 20:45:40,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:45:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 20:45:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:45:40,149 INFO L87 Difference]: Start difference. First operand 66175 states and 80223 transitions. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 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 20:45:53,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:46:02,362 INFO L93 Difference]: Finished difference Result 161456 states and 194497 transitions. [2021-11-22 20:46:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 20:46:02,363 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 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 155 [2021-11-22 20:46:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:46:02,549 INFO L225 Difference]: With dead ends: 161456 [2021-11-22 20:46:02,549 INFO L226 Difference]: Without dead ends: 112190 [2021-11-22 20:46:02,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 20:46:02,582 INFO L933 BasicCegarLoop]: 1808 mSDtfsCounter, 10549 mSDsluCounter, 15557 mSDsCounter, 0 mSdLazyCounter, 6539 mSolverCounterSat, 680 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10549 SdHoareTripleChecker+Valid, 17365 SdHoareTripleChecker+Invalid, 7220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 6539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:46:02,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10549 Valid, 17365 Invalid, 7220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [680 Valid, 6539 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-22 20:46:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112190 states. [2021-11-22 20:46:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112190 to 90422. [2021-11-22 20:46:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90422 states, 90397 states have (on average 1.2120092480945164) internal successors, (109562), 90421 states have internal predecessors, (109562), 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 20:46:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90422 states to 90422 states and 109562 transitions. [2021-11-22 20:46:10,234 INFO L78 Accepts]: Start accepts. Automaton has 90422 states and 109562 transitions. Word has length 155 [2021-11-22 20:46:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:46:10,234 INFO L470 AbstractCegarLoop]: Abstraction has 90422 states and 109562 transitions. [2021-11-22 20:46:10,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 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 20:46:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 90422 states and 109562 transitions. [2021-11-22 20:46:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-22 20:46:10,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:46:10,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:10,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-22 20:46:10,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:10,441 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:46:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:46:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash 412650315, now seen corresponding path program 1 times [2021-11-22 20:46:10,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:46:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466169557] [2021-11-22 20:46:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:10,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:46:10,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:46:10,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648024322] [2021-11-22 20:46:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:10,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:46:10,485 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:46:10,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-22 20:46:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:46:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-22 20:46:11,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:46:11,307 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 20:46:11,373 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 20:46:11,373 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 20:46:11,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,739 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 23 treesize of output 22 [2021-11-22 20:46:11,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,746 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 25 treesize of output 24 [2021-11-22 20:46:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,762 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 23 treesize of output 22 [2021-11-22 20:46:11,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,811 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 20:46:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,815 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 23 treesize of output 22 [2021-11-22 20:46:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:11,826 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 20:46:11,954 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:46:11,954 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 20:46:12,032 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:46:12,032 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 52 treesize of output 54 [2021-11-22 20:46:12,044 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:46:12,045 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 46 treesize of output 48 [2021-11-22 20:46:12,057 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:46:12,057 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 40 treesize of output 42 [2021-11-22 20:46:12,450 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:46:12,450 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 53 treesize of output 59 [2021-11-22 20:46:12,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:12,455 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 54 treesize of output 53 [2021-11-22 20:46:12,468 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:46:12,469 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 43 treesize of output 49 [2021-11-22 20:46:12,486 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 20:46:12,495 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 20:46:13,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:13,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:46:13,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 66 treesize of output 36 [2021-11-22 20:46:13,411 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 20:46:13,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:46:13,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:46:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466169557] [2021-11-22 20:46:13,412 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:46:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648024322] [2021-11-22 20:46:13,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648024322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:46:13,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:46:13,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-22 20:46:13,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099598789] [2021-11-22 20:46:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:46:13,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 20:46:13,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:46:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 20:46:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:46:13,413 INFO L87 Difference]: Start difference. First operand 90422 states and 109562 transitions. Second operand has 21 states, 21 states have (on average 7.380952380952381) internal successors, (155), 21 states have internal predecessors, (155), 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 20:46:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:46:35,373 INFO L93 Difference]: Finished difference Result 160916 states and 194808 transitions. [2021-11-22 20:46:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 20:46:35,376 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.380952380952381) internal successors, (155), 21 states have internal predecessors, (155), 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 155 [2021-11-22 20:46:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:46:35,541 INFO L225 Difference]: With dead ends: 160916 [2021-11-22 20:46:35,541 INFO L226 Difference]: Without dead ends: 99997 [2021-11-22 20:46:35,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 20:46:35,579 INFO L933 BasicCegarLoop]: 2093 mSDtfsCounter, 3162 mSDsluCounter, 16981 mSDsCounter, 0 mSdLazyCounter, 5921 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 19074 SdHoareTripleChecker+Invalid, 6122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 5921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:46:35,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3162 Valid, 19074 Invalid, 6122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 5921 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2021-11-22 20:46:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99997 states. [2021-11-22 20:46:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99997 to 90459. [2021-11-22 20:46:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90459 states, 90434 states have (on average 1.2119777959616957) internal successors, (109604), 90458 states have internal predecessors, (109604), 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 20:46:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90459 states to 90459 states and 109604 transitions. [2021-11-22 20:46:43,180 INFO L78 Accepts]: Start accepts. Automaton has 90459 states and 109604 transitions. Word has length 155 [2021-11-22 20:46:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:46:43,180 INFO L470 AbstractCegarLoop]: Abstraction has 90459 states and 109604 transitions. [2021-11-22 20:46:43,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.380952380952381) internal successors, (155), 21 states have internal predecessors, (155), 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 20:46:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 90459 states and 109604 transitions. [2021-11-22 20:46:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-22 20:46:43,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:46:43,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:43,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-22 20:46:43,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-22 20:46:43,403 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:46:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:46:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1249204157, now seen corresponding path program 1 times [2021-11-22 20:46:43,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:46:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576935936] [2021-11-22 20:46:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:43,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:46:43,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:46:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686520593] [2021-11-22 20:46:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:43,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:43,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:46:43,449 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:46:43,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-22 20:46:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:46:44,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 225 conjunts are in the unsatisfiable core [2021-11-22 20:46:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:46:44,248 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 20:46:44,339 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:46:44,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-22 20:46:44,378 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 30 treesize of output 26 [2021-11-22 20:46:44,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:44,475 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 48 treesize of output 35 [2021-11-22 20:46:44,773 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:46:44,773 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 25 treesize of output 31 [2021-11-22 20:46:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:44,892 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 25 treesize of output 24 [2021-11-22 20:46:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:44,915 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 33 treesize of output 26 [2021-11-22 20:46:45,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,015 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 25 treesize of output 24 [2021-11-22 20:46:45,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,024 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 33 treesize of output 26 [2021-11-22 20:46:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,107 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 31 treesize of output 24 [2021-11-22 20:46:45,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,120 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 23 treesize of output 22 [2021-11-22 20:46:45,401 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:46:45,401 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 27 treesize of output 27 [2021-11-22 20:46:45,524 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:46:45,524 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 49 treesize of output 49 [2021-11-22 20:46:45,535 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:46:45,537 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 43 treesize of output 45 [2021-11-22 20:46:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:46,077 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 51 treesize of output 50 [2021-11-22 20:46:46,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:46,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:46:46,084 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 40 treesize of output 35 [2021-11-22 20:46:46,353 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 20:46:46,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:46:46,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:46:46,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576935936] [2021-11-22 20:46:46,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:46:46,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686520593] [2021-11-22 20:46:46,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686520593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:46:46,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:46:46,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-22 20:46:46,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590629319] [2021-11-22 20:46:46,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:46:46,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 20:46:46,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:46:46,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 20:46:46,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:46:46,355 INFO L87 Difference]: Start difference. First operand 90459 states and 109604 transitions. Second operand has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 21 states have internal predecessors, (156), 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 20:47:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:47:03,728 INFO L93 Difference]: Finished difference Result 184132 states and 222996 transitions. [2021-11-22 20:47:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 20:47:03,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 21 states have internal predecessors, (156), 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 156 [2021-11-22 20:47:03,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:47:03,871 INFO L225 Difference]: With dead ends: 184132 [2021-11-22 20:47:03,871 INFO L226 Difference]: Without dead ends: 94443 [2021-11-22 20:47:03,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 20:47:03,919 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 1099 mSDsluCounter, 11874 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 13352 SdHoareTripleChecker+Invalid, 5329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:47:03,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 13352 Invalid, 5329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 5233 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-22 20:47:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94443 states. [2021-11-22 20:47:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94443 to 90645. [2021-11-22 20:47:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90645 states, 90620 states have (on average 1.2118406532774222) internal successors, (109817), 90644 states have internal predecessors, (109817), 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 20:47:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90645 states to 90645 states and 109817 transitions. [2021-11-22 20:47:11,388 INFO L78 Accepts]: Start accepts. Automaton has 90645 states and 109817 transitions. Word has length 156 [2021-11-22 20:47:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:47:11,388 INFO L470 AbstractCegarLoop]: Abstraction has 90645 states and 109817 transitions. [2021-11-22 20:47:11,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 21 states have internal predecessors, (156), 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 20:47:11,388 INFO L276 IsEmpty]: Start isEmpty. Operand 90645 states and 109817 transitions. [2021-11-22 20:47:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-22 20:47:11,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:47:11,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:11,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-22 20:47:11,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-22 20:47:11,595 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:47:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:47:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1659814523, now seen corresponding path program 1 times [2021-11-22 20:47:11,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:47:11,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988977959] [2021-11-22 20:47:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:11,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:47:11,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:47:11,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654176526] [2021-11-22 20:47:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:11,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:47:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:47:11,641 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:47:11,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-22 20:47:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:47:12,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-22 20:47:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:47:12,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:12,842 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 44 treesize of output 43 [2021-11-22 20:47:12,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:12,844 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 33 treesize of output 32 [2021-11-22 20:47:13,092 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 20:47:13,094 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 20:47:13,115 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 36 treesize of output 28 [2021-11-22 20:47:13,116 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 28 treesize of output 20 [2021-11-22 20:47:13,177 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 20:47:13,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:47:13,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:47:13,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988977959] [2021-11-22 20:47:13,177 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:47:13,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654176526] [2021-11-22 20:47:13,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654176526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:47:13,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:47:13,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 20:47:13,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781586778] [2021-11-22 20:47:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:47:13,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 20:47:13,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:47:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 20:47:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:47:13,178 INFO L87 Difference]: Start difference. First operand 90645 states and 109817 transitions. Second operand has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 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 20:47:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:47:34,143 INFO L93 Difference]: Finished difference Result 223142 states and 268685 transitions. [2021-11-22 20:47:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 20:47:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 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 156 [2021-11-22 20:47:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:47:34,408 INFO L225 Difference]: With dead ends: 223142 [2021-11-22 20:47:34,408 INFO L226 Difference]: Without dead ends: 154212 [2021-11-22 20:47:34,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=780, Invalid=3002, Unknown=0, NotChecked=0, Total=3782 [2021-11-22 20:47:34,470 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 10655 mSDsluCounter, 13452 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10655 SdHoareTripleChecker+Valid, 15335 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:47:34,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10655 Valid, 15335 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [884 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-22 20:47:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154212 states. [2021-11-22 20:47:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154212 to 103764. [2021-11-22 20:47:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103764 states, 103739 states have (on average 1.2114248257646594) internal successors, (125672), 103763 states have internal predecessors, (125672), 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 20:47:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103764 states to 103764 states and 125672 transitions. [2021-11-22 20:47:43,214 INFO L78 Accepts]: Start accepts. Automaton has 103764 states and 125672 transitions. Word has length 156 [2021-11-22 20:47:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:47:43,214 INFO L470 AbstractCegarLoop]: Abstraction has 103764 states and 125672 transitions. [2021-11-22 20:47:43,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 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 20:47:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 103764 states and 125672 transitions. [2021-11-22 20:47:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-22 20:47:43,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:47:43,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:43,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-22 20:47:43,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-22 20:47:43,421 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:47:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:47:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1973667765, now seen corresponding path program 1 times [2021-11-22 20:47:43,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:47:43,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755927757] [2021-11-22 20:47:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:43,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:47:43,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:47:43,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739506065] [2021-11-22 20:47:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:43,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:47:43,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:47:43,464 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:47:43,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-22 20:47:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:47:44,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-22 20:47:44,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:47:44,982 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 23 treesize of output 11 [2021-11-22 20:47:45,119 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 20:47:45,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:47:45,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:47:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755927757] [2021-11-22 20:47:45,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:47:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739506065] [2021-11-22 20:47:45,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739506065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:47:45,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:47:45,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:47:45,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425001161] [2021-11-22 20:47:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:47:45,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:47:45,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:47:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:47:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:47:45,120 INFO L87 Difference]: Start difference. First operand 103764 states and 125672 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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 20:47:52,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:47:57,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:48:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:48:06,513 INFO L93 Difference]: Finished difference Result 191511 states and 231913 transitions. [2021-11-22 20:48:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 20:48:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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 158 [2021-11-22 20:48:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:48:06,720 INFO L225 Difference]: With dead ends: 191511 [2021-11-22 20:48:06,720 INFO L226 Difference]: Without dead ends: 129257 [2021-11-22 20:48:06,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-22 20:48:06,769 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 1233 mSDsluCounter, 14015 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 16107 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:48:06,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 16107 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3725 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-22 20:48:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129257 states. [2021-11-22 20:48:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129257 to 99937. [2021-11-22 20:48:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99937 states, 99912 states have (on average 1.2121066538553928) internal successors, (121104), 99936 states have internal predecessors, (121104), 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 20:48:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99937 states to 99937 states and 121104 transitions. [2021-11-22 20:48:15,311 INFO L78 Accepts]: Start accepts. Automaton has 99937 states and 121104 transitions. Word has length 158 [2021-11-22 20:48:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:48:15,311 INFO L470 AbstractCegarLoop]: Abstraction has 99937 states and 121104 transitions. [2021-11-22 20:48:15,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 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 20:48:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 99937 states and 121104 transitions. [2021-11-22 20:48:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-22 20:48:15,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:48:15,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:15,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-22 20:48:15,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-22 20:48:15,517 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-22 20:48:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:48:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -60002684, now seen corresponding path program 1 times [2021-11-22 20:48:15,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:48:15,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073764187] [2021-11-22 20:48:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:48:15,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:48:15,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:48:15,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134400978] [2021-11-22 20:48:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:48:15,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:48:15,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:48:15,564 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:48:15,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-22 20:48:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:48:16,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-22 20:48:16,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:48:17,262 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 37 treesize of output 36 [2021-11-22 20:48:17,264 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 20:48:17,393 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 37 treesize of output 36 [2021-11-22 20:48:17,395 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 20:48:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:48:17,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:48:17,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:48:17,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073764187] [2021-11-22 20:48:17,527 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:48:17,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134400978] [2021-11-22 20:48:17,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134400978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:48:17,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:48:17,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-22 20:48:17,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954345151] [2021-11-22 20:48:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:48:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 20:48:17,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:48:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 20:48:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:48:17,530 INFO L87 Difference]: Start difference. First operand 99937 states and 121104 transitions. Second operand has 24 states, 24 states have (on average 6.708333333333333) internal successors, (161), 24 states have internal predecessors, (161), 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 20:48:26,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:48:38,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:49:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:49:13,193 INFO L93 Difference]: Finished difference Result 456315 states and 552938 transitions. [2021-11-22 20:49:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-22 20:49:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.708333333333333) internal successors, (161), 24 states have internal predecessors, (161), 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 161 [2021-11-22 20:49:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:49:13,944 INFO L225 Difference]: With dead ends: 456315 [2021-11-22 20:49:13,945 INFO L226 Difference]: Without dead ends: 365048 [2021-11-22 20:49:14,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5996 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1856, Invalid=15700, Unknown=0, NotChecked=0, Total=17556 [2021-11-22 20:49:14,048 INFO L933 BasicCegarLoop]: 2442 mSDtfsCounter, 16139 mSDsluCounter, 43053 mSDsCounter, 0 mSdLazyCounter, 12563 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16139 SdHoareTripleChecker+Valid, 45495 SdHoareTripleChecker+Invalid, 13388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 12563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:49:14,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16139 Valid, 45495 Invalid, 13388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [825 Valid, 12563 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2021-11-22 20:49:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365048 states.