./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_pop_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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:53:40,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:53:40,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:53:40,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:53:40,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:53:40,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:53:40,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:53:40,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:53:40,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:53:40,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:53:40,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:53:40,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:53:40,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:53:40,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:53:40,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:53:40,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:53:40,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:53:40,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:53:40,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:53:40,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:53:40,806 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:53:40,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:53:40,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:53:40,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:53:40,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:53:40,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:53:40,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:53:40,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:53:40,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:53:40,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:53:40,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:53:40,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:53:40,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:53:40,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:53:40,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:53:40,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:53:40,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:53:40,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:53:40,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:53:40,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:53:40,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:53:40,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:53:40,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:53:40,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:53:40,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:53:40,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:53:40,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:53:40,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:53:40,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:53:40,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:53:40,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:53:40,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:53:40,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:53:40,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:53:40,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:53:40,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:53:40,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:53:40,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:53:40,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:53:40,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:53:40,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:53:40,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:53:40,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:53:40,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:53:40,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:53:40,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:53:40,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:53:40,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-07-13 22:53:41,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:53:41,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:53:41,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:53:41,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:53:41,049 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:53:41,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-13 22:53:41,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec661aa5e/4129473781544e279162559ada0d3215/FLAGefe1fa05b [2022-07-13 22:53:41,641 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:53:41,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-13 22:53:41,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec661aa5e/4129473781544e279162559ada0d3215/FLAGefe1fa05b [2022-07-13 22:53:42,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec661aa5e/4129473781544e279162559ada0d3215 [2022-07-13 22:53:42,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:53:42,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:53:42,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:53:42,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:53:42,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:53:42,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:53:42" (1/1) ... [2022-07-13 22:53:42,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff7ffab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:42, skipping insertion in model container [2022-07-13 22:53:42,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:53:42" (1/1) ... [2022-07-13 22:53:42,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:53:42,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:53:42,379 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_pop_harness.i[4496,4509] [2022-07-13 22:53:42,385 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_pop_harness.i[4556,4569] [2022-07-13 22:53:42,875 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,876 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,876 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,877 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,877 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,884 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,886 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:42,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,073 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:53:43,074 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:53:43,074 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:53:43,075 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:53:43,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:53:43,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:53:43,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:53:43,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:53:43,079 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:53:43,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:53:43,158 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:53:43,174 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,235 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,238 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,238 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,239 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,239 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,239 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,240 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,240 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,263 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:53:43,315 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:53:43,335 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_pop_harness.i[4496,4509] [2022-07-13 22:53:43,337 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_pop_harness.i[4556,4569] [2022-07-13 22:53:43,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,384 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,385 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,385 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,386 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,386 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:53:43,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:53:43,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:53:43,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:53:43,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:53:43,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:53:43,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:53:43,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:53:43,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:53:43,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:53:43,432 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:53:43,445 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,448 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,473 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,475 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,475 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,475 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,475 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,477 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,501 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,501 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,502 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:43,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:53:43,645 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:53:43,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43 WrapperNode [2022-07-13 22:53:43,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:53:43,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:53:43,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:53:43,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:53:43,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,809 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2022-07-13 22:53:43,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:53:43,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:53:43,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:53:43,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:53:43,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:53:43,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:53:43,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:53:43,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:53:43,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (1/1) ... [2022-07-13 22:53:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:53:43,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:43,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:53:43,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:53:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-07-13 22:53:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-07-13 22:53:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-13 22:53:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-13 22:53:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:53:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:53:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:53:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:53:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:53:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:53:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:53:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-07-13 22:53:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-07-13 22:53:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 22:53:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:53:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:53:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:53:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:53:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:53:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-07-13 22:53:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-07-13 22:53:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:53:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:53:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:53:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-07-13 22:53:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-07-13 22:53:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:53:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:53:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:53:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:53:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:53:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:53:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:53:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:53:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 22:53:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:53:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:53:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-13 22:53:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-13 22:53:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-13 22:53:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-13 22:53:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 22:53:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:53:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:53:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-13 22:53:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:53:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:53:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-13 22:53:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-13 22:53:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:53:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:53:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:53:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:53:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:53:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:53:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:53:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-07-13 22:53:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-07-13 22:53:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-13 22:53:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-13 22:53:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:53:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-07-13 22:53:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-07-13 22:53:44,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:53:44,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:53:45,774 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:53:45,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:53:45,780 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:53:45,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:53:45 BoogieIcfgContainer [2022-07-13 22:53:45,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:53:45,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:53:45,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:53:45,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:53:45,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:53:42" (1/3) ... [2022-07-13 22:53:45,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9d636f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:53:45, skipping insertion in model container [2022-07-13 22:53:45,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:43" (2/3) ... [2022-07-13 22:53:45,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9d636f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:53:45, skipping insertion in model container [2022-07-13 22:53:45,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:53:45" (3/3) ... [2022-07-13 22:53:45,787 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-07-13 22:53:45,797 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:53:45,797 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 22:53:45,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:53:45,865 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34880378, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13fa789f [2022-07-13 22:53:45,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 22:53:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-07-13 22:53:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 22:53:45,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:45,890 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:45,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1140837343, now seen corresponding path program 1 times [2022-07-13 22:53:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006645413] [2022-07-13 22:53:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:53:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:53:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:53:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:53:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 22:53:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:53:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:53:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:53:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:53:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 22:53:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:53:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:53:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:53:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:53:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:53:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:53:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:53:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-13 22:53:46,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:46,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006645413] [2022-07-13 22:53:46,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006645413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:46,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:46,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:53:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559154876] [2022-07-13 22:53:46,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:53:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:53:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:53:46,476 INFO L87 Difference]: Start difference. First operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:53:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:47,835 INFO L93 Difference]: Finished difference Result 1063 states and 1806 transitions. [2022-07-13 22:53:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:53:47,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-07-13 22:53:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:47,866 INFO L225 Difference]: With dead ends: 1063 [2022-07-13 22:53:47,866 INFO L226 Difference]: Without dead ends: 621 [2022-07-13 22:53:47,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:53:47,880 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 465 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:47,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 952 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 22:53:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-13 22:53:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 441. [2022-07-13 22:53:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 260 states have internal predecessors, (318), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-07-13 22:53:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2022-07-13 22:53:47,968 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 133 [2022-07-13 22:53:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2022-07-13 22:53:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:53:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2022-07-13 22:53:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 22:53:47,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:47,974 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:53:47,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash 826891299, now seen corresponding path program 1 times [2022-07-13 22:53:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366213495] [2022-07-13 22:53:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:53:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:53:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:53:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:53:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 22:53:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:53:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:53:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:53:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:53:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 22:53:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:53:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:53:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:53:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:53:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:53:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:53:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:53:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-13 22:53:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366213495] [2022-07-13 22:53:48,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366213495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:53:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048990014] [2022-07-13 22:53:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:48,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:48,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:48,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:48,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:53:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:48,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:53:48,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 22:53:48,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:48,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048990014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:48,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:53:48,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 22:53:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202688450] [2022-07-13 22:53:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:48,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:53:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:53:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:53:48,890 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:53:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:50,576 INFO L93 Difference]: Finished difference Result 848 states and 1225 transitions. [2022-07-13 22:53:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:53:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2022-07-13 22:53:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:50,579 INFO L225 Difference]: With dead ends: 848 [2022-07-13 22:53:50,579 INFO L226 Difference]: Without dead ends: 443 [2022-07-13 22:53:50,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:53:50,582 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 643 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:50,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2189 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 22:53:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-13 22:53:50,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-07-13 22:53:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 258 states have (on average 1.2364341085271318) internal successors, (319), 262 states have internal predecessors, (319), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2022-07-13 22:53:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 642 transitions. [2022-07-13 22:53:50,612 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 642 transitions. Word has length 133 [2022-07-13 22:53:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:50,614 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 642 transitions. [2022-07-13 22:53:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:53:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 642 transitions. [2022-07-13 22:53:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:53:50,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:50,618 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:50,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:50,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:50,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:50,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1886231881, now seen corresponding path program 1 times [2022-07-13 22:53:50,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:50,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907926963] [2022-07-13 22:53:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:50,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:53:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:53:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:53:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:53:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 22:53:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:53:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:53:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:53:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:53:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:53:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 22:53:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:53:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:53:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:53:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:53:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:53:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:53:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:53:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:53:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:53:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-13 22:53:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907926963] [2022-07-13 22:53:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907926963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:53:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407186123] [2022-07-13 22:53:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:51,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:51,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:51,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:51,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:53:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:51,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:53:51,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 22:53:51,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:51,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407186123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:51,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:53:51,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-13 22:53:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127823134] [2022-07-13 22:53:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:53:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:53:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:53:51,713 INFO L87 Difference]: Start difference. First operand 443 states and 642 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:53:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:53,836 INFO L93 Difference]: Finished difference Result 871 states and 1296 transitions. [2022-07-13 22:53:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:53:53,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-07-13 22:53:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:53,839 INFO L225 Difference]: With dead ends: 871 [2022-07-13 22:53:53,839 INFO L226 Difference]: Without dead ends: 464 [2022-07-13 22:53:53,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:53:53,842 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 667 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:53,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 3229 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 22:53:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-13 22:53:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2022-07-13 22:53:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-13 22:53:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-13 22:53:53,860 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 141 [2022-07-13 22:53:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:53,860 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-13 22:53:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:53:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-13 22:53:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:53:53,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:53,862 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:53,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:53:54,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash -523305437, now seen corresponding path program 1 times [2022-07-13 22:53:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:54,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620945169] [2022-07-13 22:53:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:54,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:54,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378778437] [2022-07-13 22:53:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:54,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:54,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:53:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:54,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:53:54,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 22:53:54,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:54,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620945169] [2022-07-13 22:53:54,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:54,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378778437] [2022-07-13 22:53:54,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378778437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:54,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:54,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:53:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407409989] [2022-07-13 22:53:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:53:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:53:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:53:54,628 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:53:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:55,859 INFO L93 Difference]: Finished difference Result 896 states and 1369 transitions. [2022-07-13 22:53:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:53:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2022-07-13 22:53:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:55,863 INFO L225 Difference]: With dead ends: 896 [2022-07-13 22:53:55,863 INFO L226 Difference]: Without dead ends: 470 [2022-07-13 22:53:55,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:53:55,866 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 667 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:55,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2693 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 22:53:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-13 22:53:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2022-07-13 22:53:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-13 22:53:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-13 22:53:55,885 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 156 [2022-07-13 22:53:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:55,885 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-13 22:53:55,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:53:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-13 22:53:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 22:53:55,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:55,887 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:55,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 22:53:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:56,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1664024204, now seen corresponding path program 1 times [2022-07-13 22:53:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579476139] [2022-07-13 22:53:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:56,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:56,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:56,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017364261] [2022-07-13 22:53:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:56,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:56,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:53:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:56,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:53:56,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 22:53:56,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:56,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579476139] [2022-07-13 22:53:56,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:56,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017364261] [2022-07-13 22:53:56,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017364261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:56,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:56,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:53:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832240190] [2022-07-13 22:53:56,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:56,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:53:56,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:56,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:53:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:53:56,718 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-13 22:53:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:59,633 INFO L93 Difference]: Finished difference Result 906 states and 1373 transitions. [2022-07-13 22:53:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:53:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2022-07-13 22:53:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:59,637 INFO L225 Difference]: With dead ends: 906 [2022-07-13 22:53:59,637 INFO L226 Difference]: Without dead ends: 480 [2022-07-13 22:53:59,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:53:59,639 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 732 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:59,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 3624 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 22:53:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-13 22:53:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-13 22:53:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-13 22:53:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-13 22:53:59,689 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 172 [2022-07-13 22:53:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:59,690 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-13 22:53:59,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-13 22:53:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-13 22:53:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-13 22:53:59,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:59,692 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:59,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:59,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:59,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash -294824304, now seen corresponding path program 2 times [2022-07-13 22:53:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:59,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790845999] [2022-07-13 22:53:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:59,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:59,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994019572] [2022-07-13 22:53:59,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:53:59,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:59,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:59,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:54:00,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:54:00,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:54:00,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:54:00,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 22:54:00,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790845999] [2022-07-13 22:54:00,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994019572] [2022-07-13 22:54:00,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994019572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:00,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:00,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:54:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940469788] [2022-07-13 22:54:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:00,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:54:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:54:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:54:00,583 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 22:54:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:01,633 INFO L93 Difference]: Finished difference Result 858 states and 1293 transitions. [2022-07-13 22:54:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:54:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 187 [2022-07-13 22:54:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:01,637 INFO L225 Difference]: With dead ends: 858 [2022-07-13 22:54:01,637 INFO L226 Difference]: Without dead ends: 464 [2022-07-13 22:54:01,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:54:01,640 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 655 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:01,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2725 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:54:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-13 22:54:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-07-13 22:54:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 275 states have (on average 1.2436363636363637) internal successors, (342), 280 states have internal predecessors, (342), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-13 22:54:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 697 transitions. [2022-07-13 22:54:01,658 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 697 transitions. Word has length 187 [2022-07-13 22:54:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:01,659 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 697 transitions. [2022-07-13 22:54:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 22:54:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 697 transitions. [2022-07-13 22:54:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-13 22:54:01,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:01,661 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:01,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:01,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:01,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1770519646, now seen corresponding path program 1 times [2022-07-13 22:54:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:01,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543983888] [2022-07-13 22:54:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:01,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:01,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714685177] [2022-07-13 22:54:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:01,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:01,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:01,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:01,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:54:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:54:02,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-13 22:54:02,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543983888] [2022-07-13 22:54:02,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714685177] [2022-07-13 22:54:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714685177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:02,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:54:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871650485] [2022-07-13 22:54:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:54:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:54:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:54:02,541 INFO L87 Difference]: Start difference. First operand 464 states and 697 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-13 22:54:03,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 22:54:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:05,354 INFO L93 Difference]: Finished difference Result 863 states and 1318 transitions. [2022-07-13 22:54:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:54:05,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 210 [2022-07-13 22:54:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:05,357 INFO L225 Difference]: With dead ends: 863 [2022-07-13 22:54:05,357 INFO L226 Difference]: Without dead ends: 467 [2022-07-13 22:54:05,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:54:05,360 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 679 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:05,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3218 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 22:54:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-07-13 22:54:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2022-07-13 22:54:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 276 states have (on average 1.2427536231884058) internal successors, (343), 281 states have internal predecessors, (343), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-13 22:54:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 698 transitions. [2022-07-13 22:54:05,378 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 698 transitions. Word has length 210 [2022-07-13 22:54:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:05,379 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 698 transitions. [2022-07-13 22:54:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-13 22:54:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 698 transitions. [2022-07-13 22:54:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-13 22:54:05,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:05,382 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:05,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:05,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:05,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash -236319775, now seen corresponding path program 1 times [2022-07-13 22:54:05,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:05,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889126362] [2022-07-13 22:54:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:05,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:05,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632970750] [2022-07-13 22:54:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:05,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:05,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:05,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:05,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:54:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:06,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:54:06,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-13 22:54:06,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:54:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-13 22:54:06,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:06,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889126362] [2022-07-13 22:54:06,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632970750] [2022-07-13 22:54:06,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632970750] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:54:06,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:54:06,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-13 22:54:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845197081] [2022-07-13 22:54:06,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:54:06,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:54:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:54:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:54:06,557 INFO L87 Difference]: Start difference. First operand 465 states and 698 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-13 22:54:07,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 22:54:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:10,939 INFO L93 Difference]: Finished difference Result 881 states and 1352 transitions. [2022-07-13 22:54:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:54:10,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) Word has length 211 [2022-07-13 22:54:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:10,942 INFO L225 Difference]: With dead ends: 881 [2022-07-13 22:54:10,943 INFO L226 Difference]: Without dead ends: 484 [2022-07-13 22:54:10,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:54:10,945 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1085 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:10,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4683 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 22:54:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-13 22:54:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-07-13 22:54:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 159 states have call successors, (159), 27 states have call predecessors, (159), 29 states have return successors, (198), 159 states have call predecessors, (198), 157 states have call successors, (198) [2022-07-13 22:54:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 717 transitions. [2022-07-13 22:54:10,961 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 717 transitions. Word has length 211 [2022-07-13 22:54:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 717 transitions. [2022-07-13 22:54:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-13 22:54:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 717 transitions. [2022-07-13 22:54:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-13 22:54:10,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:10,964 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:10,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:11,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:11,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1051846891, now seen corresponding path program 2 times [2022-07-13 22:54:11,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:11,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655634300] [2022-07-13 22:54:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:11,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:11,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289954606] [2022-07-13 22:54:11,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:54:11,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:11,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:11,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:54:12,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:54:12,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:54:12,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 22:54:12,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-13 22:54:12,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655634300] [2022-07-13 22:54:12,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289954606] [2022-07-13 22:54:12,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289954606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:12,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:12,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:54:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670337238] [2022-07-13 22:54:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:54:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:54:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:54:12,182 INFO L87 Difference]: Start difference. First operand 478 states and 717 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-13 22:54:14,813 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=false, quantifiers [] [2022-07-13 22:54:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:16,071 INFO L93 Difference]: Finished difference Result 890 states and 1355 transitions. [2022-07-13 22:54:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:54:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 226 [2022-07-13 22:54:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:16,075 INFO L225 Difference]: With dead ends: 890 [2022-07-13 22:54:16,075 INFO L226 Difference]: Without dead ends: 480 [2022-07-13 22:54:16,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:54:16,077 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 744 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:16,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 4118 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 22:54:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-13 22:54:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-13 22:54:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (184), 157 states have call predecessors, (184), 156 states have call successors, (184) [2022-07-13 22:54:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 683 transitions. [2022-07-13 22:54:16,093 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 683 transitions. Word has length 226 [2022-07-13 22:54:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:16,094 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 683 transitions. [2022-07-13 22:54:16,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-13 22:54:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 683 transitions. [2022-07-13 22:54:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-13 22:54:16,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:16,096 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:16,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-13 22:54:16,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 664794371, now seen corresponding path program 3 times [2022-07-13 22:54:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:16,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105222489] [2022-07-13 22:54:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:16,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:16,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586256113] [2022-07-13 22:54:16,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:54:16,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:16,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:16,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:54:16,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 22:54:16,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:54:16,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:54:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-13 22:54:17,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105222489] [2022-07-13 22:54:17,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586256113] [2022-07-13 22:54:17,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586256113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:17,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:17,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:54:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418417239] [2022-07-13 22:54:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:54:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:54:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:54:17,004 INFO L87 Difference]: Start difference. First operand 462 states and 683 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-13 22:54:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:17,228 INFO L93 Difference]: Finished difference Result 851 states and 1291 transitions. [2022-07-13 22:54:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:54:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 241 [2022-07-13 22:54:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:17,233 INFO L225 Difference]: With dead ends: 851 [2022-07-13 22:54:17,233 INFO L226 Difference]: Without dead ends: 462 [2022-07-13 22:54:17,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:54:17,235 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:17,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2858 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:54:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-13 22:54:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2022-07-13 22:54:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (183), 157 states have call predecessors, (183), 156 states have call successors, (183) [2022-07-13 22:54:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2022-07-13 22:54:17,251 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 241 [2022-07-13 22:54:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:17,251 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2022-07-13 22:54:17,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-13 22:54:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2022-07-13 22:54:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-13 22:54:17,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:17,253 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:17,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:17,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:54:17,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1662762273, now seen corresponding path program 4 times [2022-07-13 22:54:17,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:17,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779535313] [2022-07-13 22:54:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:17,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:17,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751892022] [2022-07-13 22:54:17,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:54:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:17,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:17,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:54:18,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:54:18,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:54:18,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:54:18,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-13 22:54:18,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:18,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779535313] [2022-07-13 22:54:18,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:18,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751892022] [2022-07-13 22:54:18,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751892022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:18,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:18,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:54:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457653811] [2022-07-13 22:54:18,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:54:18,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:54:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:54:18,213 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 22:54:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:20,361 INFO L93 Difference]: Finished difference Result 862 states and 1283 transitions. [2022-07-13 22:54:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:54:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 256 [2022-07-13 22:54:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:20,365 INFO L225 Difference]: With dead ends: 862 [2022-07-13 22:54:20,365 INFO L226 Difference]: Without dead ends: 474 [2022-07-13 22:54:20,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:54:20,367 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 64 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:20,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3972 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 22:54:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-13 22:54:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2022-07-13 22:54:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 280 states have (on average 1.2428571428571429) internal successors, (348), 284 states have internal predecessors, (348), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-13 22:54:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 699 transitions. [2022-07-13 22:54:20,381 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 699 transitions. Word has length 256 [2022-07-13 22:54:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 699 transitions. [2022-07-13 22:54:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 22:54:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 699 transitions. [2022-07-13 22:54:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 22:54:20,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:20,384 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:20,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:54:20,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -350828385, now seen corresponding path program 1 times [2022-07-13 22:54:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:20,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282087394] [2022-07-13 22:54:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:20,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:20,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489266170] [2022-07-13 22:54:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:20,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:20,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:20,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:54:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:21,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:54:21,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-13 22:54:21,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282087394] [2022-07-13 22:54:21,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489266170] [2022-07-13 22:54:21,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489266170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:21,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:21,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:54:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935539365] [2022-07-13 22:54:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:21,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:54:21,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:54:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:54:21,449 INFO L87 Difference]: Start difference. First operand 474 states and 699 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:54:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:22,412 INFO L93 Difference]: Finished difference Result 948 states and 1454 transitions. [2022-07-13 22:54:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:54:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-13 22:54:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:22,415 INFO L225 Difference]: With dead ends: 948 [2022-07-13 22:54:22,415 INFO L226 Difference]: Without dead ends: 510 [2022-07-13 22:54:22,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:54:22,418 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:22,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2951 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:54:22,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-13 22:54:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 482. [2022-07-13 22:54:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2430555555555556) internal successors, (358), 292 states have internal predecessors, (358), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-13 22:54:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 709 transitions. [2022-07-13 22:54:22,434 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 709 transitions. Word has length 271 [2022-07-13 22:54:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:22,434 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 709 transitions. [2022-07-13 22:54:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:54:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 709 transitions. [2022-07-13 22:54:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 22:54:22,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:22,436 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:22,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:22,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:54:22,658 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -899887649, now seen corresponding path program 1 times [2022-07-13 22:54:22,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:22,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721612003] [2022-07-13 22:54:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:22,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:22,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247228458] [2022-07-13 22:54:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:22,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:22,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:22,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:22,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:54:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:23,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:54:23,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:54:23,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:23,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721612003] [2022-07-13 22:54:23,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247228458] [2022-07-13 22:54:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247228458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:23,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:23,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:54:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882539519] [2022-07-13 22:54:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:23,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:54:23,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:54:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:54:23,398 INFO L87 Difference]: Start difference. First operand 482 states and 709 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:54:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:23,424 INFO L93 Difference]: Finished difference Result 936 states and 1412 transitions. [2022-07-13 22:54:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:54:23,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-13 22:54:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:23,427 INFO L225 Difference]: With dead ends: 936 [2022-07-13 22:54:23,427 INFO L226 Difference]: Without dead ends: 490 [2022-07-13 22:54:23,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:54:23,429 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 3 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:23,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:54:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-13 22:54:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2022-07-13 22:54:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 292 states have (on average 1.2397260273972603) internal successors, (362), 296 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-13 22:54:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 713 transitions. [2022-07-13 22:54:23,444 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 713 transitions. Word has length 271 [2022-07-13 22:54:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:23,444 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 713 transitions. [2022-07-13 22:54:23,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:54:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 713 transitions. [2022-07-13 22:54:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 22:54:23,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:23,445 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:23,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:54:23,668 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1910711071, now seen corresponding path program 1 times [2022-07-13 22:54:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038795948] [2022-07-13 22:54:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:23,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388097884] [2022-07-13 22:54:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:23,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:23,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:23,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:54:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:24,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 22:54:24,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-13 22:54:24,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:24,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:24,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038795948] [2022-07-13 22:54:24,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:24,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388097884] [2022-07-13 22:54:24,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388097884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:24,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:24,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:54:24,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123985300] [2022-07-13 22:54:24,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:24,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:54:24,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:54:24,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:54:24,478 INFO L87 Difference]: Start difference. First operand 486 states and 713 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:54:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:28,025 INFO L93 Difference]: Finished difference Result 943 states and 1400 transitions. [2022-07-13 22:54:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:54:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-13 22:54:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:28,030 INFO L225 Difference]: With dead ends: 943 [2022-07-13 22:54:28,030 INFO L226 Difference]: Without dead ends: 528 [2022-07-13 22:54:28,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:54:28,033 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 42 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:28,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4503 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 22:54:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-13 22:54:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 505. [2022-07-13 22:54:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 305 states have (on average 1.2426229508196722) internal successors, (379), 309 states have internal predecessors, (379), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (198), 168 states have call predecessors, (198), 166 states have call successors, (198) [2022-07-13 22:54:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2022-07-13 22:54:28,049 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 271 [2022-07-13 22:54:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:28,049 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2022-07-13 22:54:28,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:54:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2022-07-13 22:54:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 22:54:28,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:28,051 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:28,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-13 22:54:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:54:28,274 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1178743645, now seen corresponding path program 1 times [2022-07-13 22:54:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:28,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134983417] [2022-07-13 22:54:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:28,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:28,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129280695] [2022-07-13 22:54:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:28,332 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:28,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:54:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:28,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:54:29,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-13 22:54:29,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:29,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134983417] [2022-07-13 22:54:29,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129280695] [2022-07-13 22:54:29,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129280695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:29,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:29,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:54:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218746066] [2022-07-13 22:54:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:29,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:54:29,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:54:29,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:54:29,068 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:54:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:29,474 INFO L93 Difference]: Finished difference Result 953 states and 1415 transitions. [2022-07-13 22:54:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:54:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-13 22:54:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:29,477 INFO L225 Difference]: With dead ends: 953 [2022-07-13 22:54:29,478 INFO L226 Difference]: Without dead ends: 532 [2022-07-13 22:54:29,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:54:29,480 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 31 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:29,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3174 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:54:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-13 22:54:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 511. [2022-07-13 22:54:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 308 states have (on average 1.2370129870129871) internal successors, (381), 312 states have internal predecessors, (381), 171 states have call successors, (171), 28 states have call predecessors, (171), 30 states have return successors, (201), 171 states have call predecessors, (201), 169 states have call successors, (201) [2022-07-13 22:54:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 753 transitions. [2022-07-13 22:54:29,497 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 753 transitions. Word has length 271 [2022-07-13 22:54:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:29,497 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 753 transitions. [2022-07-13 22:54:29,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:54:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 753 transitions. [2022-07-13 22:54:29,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 22:54:29,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:29,499 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:29,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:29,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:29,715 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash -957139557, now seen corresponding path program 1 times [2022-07-13 22:54:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:29,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964523467] [2022-07-13 22:54:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:29,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:29,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126244266] [2022-07-13 22:54:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:29,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:29,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:29,802 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:29,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:54:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:30,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 22:54:30,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-13 22:54:30,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:30,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:30,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964523467] [2022-07-13 22:54:30,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:30,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126244266] [2022-07-13 22:54:30,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126244266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:30,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:30,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:54:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121934100] [2022-07-13 22:54:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:54:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:54:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:54:30,499 INFO L87 Difference]: Start difference. First operand 511 states and 753 transitions. Second operand has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 22:54:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:31,179 INFO L93 Difference]: Finished difference Result 926 states and 1371 transitions. [2022-07-13 22:54:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:54:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 271 [2022-07-13 22:54:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:31,195 INFO L225 Difference]: With dead ends: 926 [2022-07-13 22:54:31,195 INFO L226 Difference]: Without dead ends: 489 [2022-07-13 22:54:31,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:54:31,197 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:31,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2278 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:54:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-13 22:54:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-07-13 22:54:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 294 states have (on average 1.2312925170068028) internal successors, (362), 299 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (190), 162 states have call predecessors, (190), 161 states have call successors, (190) [2022-07-13 22:54:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 715 transitions. [2022-07-13 22:54:31,213 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 715 transitions. Word has length 271 [2022-07-13 22:54:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:31,214 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 715 transitions. [2022-07-13 22:54:31,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 22:54:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 715 transitions. [2022-07-13 22:54:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-13 22:54:31,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:31,216 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:31,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:31,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:54:31,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1871546181, now seen corresponding path program 1 times [2022-07-13 22:54:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:31,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431217863] [2022-07-13 22:54:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:31,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:31,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749534865] [2022-07-13 22:54:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:31,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:31,507 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:31,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:54:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-13 22:54:32,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:32,585 INFO L356 Elim1Store]: treesize reduction 72, result has 11.1 percent of original size [2022-07-13 22:54:32,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 95 [2022-07-13 22:54:32,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:54:32,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 138 [2022-07-13 22:54:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:54:32,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 32 treesize of output 20 [2022-07-13 22:54:32,760 INFO L356 Elim1Store]: treesize reduction 16, result has 46.7 percent of original size [2022-07-13 22:54:32,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 155 treesize of output 144 [2022-07-13 22:54:32,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 31 [2022-07-13 22:54:33,308 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441))) is different from true [2022-07-13 22:54:33,417 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) is different from true [2022-07-13 22:54:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 17 not checked. [2022-07-13 22:54:33,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:54:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:34,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431217863] [2022-07-13 22:54:34,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:34,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749534865] [2022-07-13 22:54:34,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749534865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:54:34,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:54:34,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-13 22:54:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473764447] [2022-07-13 22:54:34,098 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:54:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:54:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:54:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=691, Unknown=35, NotChecked=110, Total=930 [2022-07-13 22:54:34,099 INFO L87 Difference]: Start difference. First operand 489 states and 715 transitions. Second operand has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-13 22:54:34,412 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441)))) is different from true [2022-07-13 22:54:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:40,106 INFO L93 Difference]: Finished difference Result 1252 states and 1987 transitions. [2022-07-13 22:54:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:54:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) Word has length 282 [2022-07-13 22:54:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:40,111 INFO L225 Difference]: With dead ends: 1252 [2022-07-13 22:54:40,112 INFO L226 Difference]: Without dead ends: 794 [2022-07-13 22:54:40,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 346 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=1079, Unknown=49, NotChecked=210, Total=1482 [2022-07-13 22:54:40,115 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 309 mSDsluCounter, 5035 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 10120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6438 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:40,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 5656 Invalid, 10120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3455 Invalid, 0 Unknown, 6438 Unchecked, 5.0s Time] [2022-07-13 22:54:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-13 22:54:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 574. [2022-07-13 22:54:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2271468144044322) internal successors, (443), 367 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-13 22:54:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 869 transitions. [2022-07-13 22:54:40,140 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 869 transitions. Word has length 282 [2022-07-13 22:54:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:40,140 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 869 transitions. [2022-07-13 22:54:40,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-13 22:54:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 869 transitions. [2022-07-13 22:54:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-13 22:54:40,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:40,143 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:40,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 22:54:40,357 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1803324809, now seen corresponding path program 1 times [2022-07-13 22:54:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825386031] [2022-07-13 22:54:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:40,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:40,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:40,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120266532] [2022-07-13 22:54:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:40,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:40,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:40,425 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:40,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:54:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:41,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:54:41,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-13 22:54:41,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:41,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:41,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825386031] [2022-07-13 22:54:41,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120266532] [2022-07-13 22:54:41,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120266532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:41,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:41,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:54:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373825683] [2022-07-13 22:54:41,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:54:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:54:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:54:41,186 INFO L87 Difference]: Start difference. First operand 574 states and 869 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:54:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:41,216 INFO L93 Difference]: Finished difference Result 1115 states and 1778 transitions. [2022-07-13 22:54:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:54:41,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 282 [2022-07-13 22:54:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:41,220 INFO L225 Difference]: With dead ends: 1115 [2022-07-13 22:54:41,220 INFO L226 Difference]: Without dead ends: 577 [2022-07-13 22:54:41,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:54:41,224 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 7 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:41,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:54:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-13 22:54:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 574. [2022-07-13 22:54:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2243767313019391) internal successors, (442), 367 states have internal predecessors, (442), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-13 22:54:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 868 transitions. [2022-07-13 22:54:41,246 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 868 transitions. Word has length 282 [2022-07-13 22:54:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:41,246 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 868 transitions. [2022-07-13 22:54:41,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:54:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 868 transitions. [2022-07-13 22:54:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-13 22:54:41,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:41,249 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 22:54:41,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 568516623, now seen corresponding path program 1 times [2022-07-13 22:54:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:41,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122540152] [2022-07-13 22:54:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:41,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36537470] [2022-07-13 22:54:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:41,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:41,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:41,531 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:41,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:54:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:42,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:54:42,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-13 22:54:42,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:42,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122540152] [2022-07-13 22:54:42,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:42,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36537470] [2022-07-13 22:54:42,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36537470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:42,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:42,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:54:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476723041] [2022-07-13 22:54:42,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:54:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:54:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:54:42,302 INFO L87 Difference]: Start difference. First operand 574 states and 868 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:54:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:43,743 INFO L93 Difference]: Finished difference Result 1119 states and 1799 transitions. [2022-07-13 22:54:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:54:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 288 [2022-07-13 22:54:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:43,747 INFO L225 Difference]: With dead ends: 1119 [2022-07-13 22:54:43,747 INFO L226 Difference]: Without dead ends: 581 [2022-07-13 22:54:43,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:54:43,751 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 15 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:43,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2396 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 22:54:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-13 22:54:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 575. [2022-07-13 22:54:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 362 states have (on average 1.223756906077348) internal successors, (443), 368 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-13 22:54:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 869 transitions. [2022-07-13 22:54:43,772 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 869 transitions. Word has length 288 [2022-07-13 22:54:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:43,772 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 869 transitions. [2022-07-13 22:54:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:54:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 869 transitions. [2022-07-13 22:54:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-13 22:54:43,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:43,774 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:43,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:43,987 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1117174929, now seen corresponding path program 1 times [2022-07-13 22:54:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:43,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644069168] [2022-07-13 22:54:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:44,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:44,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847654461] [2022-07-13 22:54:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:44,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:44,044 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:44,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 22:54:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:44,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 22:54:44,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:45,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-13 22:54:45,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-13 22:54:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:54:45,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:45,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644069168] [2022-07-13 22:54:45,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847654461] [2022-07-13 22:54:45,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847654461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:45,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:45,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:54:45,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717554554] [2022-07-13 22:54:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:45,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:54:45,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:54:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:54:45,242 INFO L87 Difference]: Start difference. First operand 575 states and 869 transitions. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-13 22:54:54,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 22:54:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:55,344 INFO L93 Difference]: Finished difference Result 1130 states and 1767 transitions. [2022-07-13 22:54:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:54:55,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 286 [2022-07-13 22:54:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:55,348 INFO L225 Difference]: With dead ends: 1130 [2022-07-13 22:54:55,348 INFO L226 Difference]: Without dead ends: 655 [2022-07-13 22:54:55,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 271 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:54:55,351 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 105 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 6684 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:55,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 6684 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1564 Invalid, 0 Unknown, 146 Unchecked, 9.9s Time] [2022-07-13 22:54:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-07-13 22:54:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 626. [2022-07-13 22:54:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 401 states have (on average 1.2169576059850373) internal successors, (488), 407 states have internal predecessors, (488), 177 states have call successors, (177), 38 states have call predecessors, (177), 46 states have return successors, (296), 181 states have call predecessors, (296), 175 states have call successors, (296) [2022-07-13 22:54:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 961 transitions. [2022-07-13 22:54:55,374 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 961 transitions. Word has length 286 [2022-07-13 22:54:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:55,374 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 961 transitions. [2022-07-13 22:54:55,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-13 22:54:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 961 transitions. [2022-07-13 22:54:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-13 22:54:55,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:55,376 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:54:55,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-13 22:54:55,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:55,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash 506581833, now seen corresponding path program 1 times [2022-07-13 22:54:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:55,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451910273] [2022-07-13 22:54:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:55,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:55,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:55,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016487904] [2022-07-13 22:54:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:55,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:55,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:55,659 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:55,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 22:54:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:56,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-13 22:54:56,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:56,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-13 22:54:56,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-13 22:54:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-13 22:54:56,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:56,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451910273] [2022-07-13 22:54:56,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:56,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016487904] [2022-07-13 22:54:56,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016487904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:56,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:56,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:54:56,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007008655] [2022-07-13 22:54:56,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:54:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:54:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:54:56,960 INFO L87 Difference]: Start difference. First operand 626 states and 961 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-13 22:55:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:55:02,775 INFO L93 Difference]: Finished difference Result 1300 states and 2083 transitions. [2022-07-13 22:55:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:55:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 288 [2022-07-13 22:55:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:55:02,793 INFO L225 Difference]: With dead ends: 1300 [2022-07-13 22:55:02,794 INFO L226 Difference]: Without dead ends: 792 [2022-07-13 22:55:02,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 273 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:55:02,796 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 111 mSDsluCounter, 4981 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:55:02,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5585 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 870 Invalid, 0 Unknown, 153 Unchecked, 5.6s Time] [2022-07-13 22:55:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-07-13 22:55:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 677. [2022-07-13 22:55:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 441 states have (on average 1.2108843537414966) internal successors, (534), 447 states have internal predecessors, (534), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-13 22:55:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1032 transitions. [2022-07-13 22:55:02,831 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1032 transitions. Word has length 288 [2022-07-13 22:55:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:55:02,831 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1032 transitions. [2022-07-13 22:55:02,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-13 22:55:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1032 transitions. [2022-07-13 22:55:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-13 22:55:02,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:55:02,833 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:55:02,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 22:55:03,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-13 22:55:03,043 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:55:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:55:03,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1457944583, now seen corresponding path program 1 times [2022-07-13 22:55:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:55:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697937761] [2022-07-13 22:55:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:55:03,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:55:03,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323220263] [2022-07-13 22:55:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:03,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:55:03,099 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:55:03,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 22:55:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:55:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 22:55:03,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:55:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-07-13 22:55:03,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:55:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:55:03,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697937761] [2022-07-13 22:55:03,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:55:03,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323220263] [2022-07-13 22:55:03,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323220263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:55:03,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:55:03,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:55:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355371259] [2022-07-13 22:55:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:55:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:55:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:55:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:55:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:55:03,905 INFO L87 Difference]: Start difference. First operand 677 states and 1032 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:55:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:55:03,946 INFO L93 Difference]: Finished difference Result 1329 states and 2148 transitions. [2022-07-13 22:55:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:55:03,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 288 [2022-07-13 22:55:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:55:03,950 INFO L225 Difference]: With dead ends: 1329 [2022-07-13 22:55:03,950 INFO L226 Difference]: Without dead ends: 717 [2022-07-13 22:55:03,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:55:03,954 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 8 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:55:03,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2572 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:55:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-13 22:55:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 693. [2022-07-13 22:55:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 457 states have (on average 1.2078774617067833) internal successors, (552), 463 states have internal predecessors, (552), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-13 22:55:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1050 transitions. [2022-07-13 22:55:03,980 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1050 transitions. Word has length 288 [2022-07-13 22:55:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:55:03,980 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1050 transitions. [2022-07-13 22:55:03,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:55:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1050 transitions. [2022-07-13 22:55:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-13 22:55:03,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:55:03,983 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:55:04,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 22:55:04,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-13 22:55:04,195 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:55:04,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:55:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1571728043, now seen corresponding path program 1 times [2022-07-13 22:55:04,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:55:04,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792420210] [2022-07-13 22:55:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:04,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:55:04,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:55:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388263313] [2022-07-13 22:55:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:04,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:55:04,259 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:55:04,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 22:55:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:55:05,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:55:05,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:55:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-07-13 22:55:05,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:55:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:55:05,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792420210] [2022-07-13 22:55:05,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:55:05,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388263313] [2022-07-13 22:55:05,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388263313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:55:05,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:55:05,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:55:05,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058282068] [2022-07-13 22:55:05,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:55:05,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:55:05,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:55:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:55:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:55:05,057 INFO L87 Difference]: Start difference. First operand 693 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:55:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:55:05,095 INFO L93 Difference]: Finished difference Result 1337 states and 2105 transitions. [2022-07-13 22:55:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:55:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2022-07-13 22:55:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:55:05,099 INFO L225 Difference]: With dead ends: 1337 [2022-07-13 22:55:05,100 INFO L226 Difference]: Without dead ends: 680 [2022-07-13 22:55:05,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:55:05,104 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 2 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:55:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1867 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:55:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-13 22:55:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 673. [2022-07-13 22:55:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 437 states have (on average 1.1876430205949657) internal successors, (519), 443 states have internal predecessors, (519), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-13 22:55:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1017 transitions. [2022-07-13 22:55:05,143 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1017 transitions. Word has length 287 [2022-07-13 22:55:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:55:05,144 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1017 transitions. [2022-07-13 22:55:05,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:55:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1017 transitions. [2022-07-13 22:55:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-07-13 22:55:05,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:55:05,146 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:55:05,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 22:55:05,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:05,363 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:55:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:55:05,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2122232585, now seen corresponding path program 1 times [2022-07-13 22:55:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:55:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838771115] [2022-07-13 22:55:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:55:05,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:55:05,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867295780] [2022-07-13 22:55:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:55:05,421 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:55:05,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 22:55:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:55:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3574 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:55:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:55:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-13 22:55:06,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:55:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-07-13 22:55:06,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:55:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838771115] [2022-07-13 22:55:06,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:55:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867295780] [2022-07-13 22:55:06,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867295780] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:55:06,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:55:06,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-07-13 22:55:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550431762] [2022-07-13 22:55:06,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:55:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:55:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:55:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:55:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:55:06,979 INFO L87 Difference]: Start difference. First operand 673 states and 1017 transitions. Second operand has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-13 22:55:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:55:07,676 INFO L93 Difference]: Finished difference Result 1194 states and 1907 transitions. [2022-07-13 22:55:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:55:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) Word has length 309 [2022-07-13 22:55:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:55:07,682 INFO L225 Difference]: With dead ends: 1194 [2022-07-13 22:55:07,682 INFO L226 Difference]: Without dead ends: 693 [2022-07-13 22:55:07,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 595 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:55:07,684 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 15 mSDsluCounter, 10824 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11438 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:55:07,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11438 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:55:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-07-13 22:55:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 685. [2022-07-13 22:55:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 447 states have (on average 1.1856823266219239) internal successors, (530), 455 states have internal predecessors, (530), 182 states have call successors, (182), 43 states have call predecessors, (182), 54 states have return successors, (350), 187 states have call predecessors, (350), 180 states have call successors, (350) [2022-07-13 22:55:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1062 transitions. [2022-07-13 22:55:07,710 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1062 transitions. Word has length 309 [2022-07-13 22:55:07,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:55:07,710 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1062 transitions. [2022-07-13 22:55:07,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-13 22:55:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1062 transitions. [2022-07-13 22:55:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-13 22:55:07,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:55:07,713 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:55:07,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 22:55:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:07,937 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:55:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:55:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash 578331100, now seen corresponding path program 2 times [2022-07-13 22:55:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:55:07,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368307732] [2022-07-13 22:55:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:55:08,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:55:08,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422002774] [2022-07-13 22:55:08,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:55:08,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:08,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:55:08,010 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:55:08,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 22:55:09,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:55:09,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:55:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3567 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-13 22:55:09,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:55:09,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-13 22:55:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-13 22:55:09,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:55:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:55:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368307732] [2022-07-13 22:55:09,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:55:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422002774] [2022-07-13 22:55:09,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422002774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:55:09,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:55:09,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:55:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014893848] [2022-07-13 22:55:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:55:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:55:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:55:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:55:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:55:09,544 INFO L87 Difference]: Start difference. First operand 685 states and 1062 transitions. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-13 22:55:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:55:14,716 INFO L93 Difference]: Finished difference Result 1512 states and 2537 transitions. [2022-07-13 22:55:14,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:55:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 293 [2022-07-13 22:55:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:55:14,725 INFO L225 Difference]: With dead ends: 1512 [2022-07-13 22:55:14,725 INFO L226 Difference]: Without dead ends: 868 [2022-07-13 22:55:14,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:55:14,728 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 285 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:55:14,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 4074 Invalid, 4000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 22:55:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-07-13 22:55:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 638. [2022-07-13 22:55:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 411 states have (on average 1.194647201946472) internal successors, (491), 418 states have internal predecessors, (491), 177 states have call successors, (177), 38 states have call predecessors, (177), 48 states have return successors, (330), 182 states have call predecessors, (330), 175 states have call successors, (330) [2022-07-13 22:55:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 998 transitions. [2022-07-13 22:55:14,765 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 998 transitions. Word has length 293 [2022-07-13 22:55:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:55:14,766 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 998 transitions. [2022-07-13 22:55:14,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-13 22:55:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 998 transitions. [2022-07-13 22:55:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-13 22:55:14,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:55:14,768 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:55:14,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-13 22:55:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 22:55:14,991 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:55:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:55:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1853967951, now seen corresponding path program 1 times [2022-07-13 22:55:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:55:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35016142] [2022-07-13 22:55:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:55:15,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:55:15,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544270320] [2022-07-13 22:55:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:55:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:55:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:55:15,058 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:55:15,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 22:55:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:55:15,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 195 conjunts are in the unsatisfiable core [2022-07-13 22:55:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:55:15,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:55:16,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:55:16,175 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8952 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8952))) is different from true [2022-07-13 22:55:18,533 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8956 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8955 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8955))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8956))))) is different from true [2022-07-13 22:55:20,556 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8956 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8955 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8955)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8956))))) is different from true [2022-07-13 22:55:20,600 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-13 22:55:20,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-07-13 22:55:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:21,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:21,302 INFO L356 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-07-13 22:55:21,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 98 [2022-07-13 22:55:21,312 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:55:21,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-13 22:55:21,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-13 22:55:21,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-13 22:55:21,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:21,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-13 22:55:21,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:55:21,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-07-13 22:55:21,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-13 22:55:41,532 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:55:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:42,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:42,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:55:43,023 INFO L356 Elim1Store]: treesize reduction 666, result has 34.2 percent of original size [2022-07-13 22:55:43,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 506 treesize of output 813 [2022-07-13 22:55:43,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 801 treesize of output 930 [2022-07-13 22:55:43,144 INFO L356 Elim1Store]: treesize reduction 222, result has 19.0 percent of original size [2022-07-13 22:55:43,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93 treesize of output 148 [2022-07-13 22:55:43,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:55:43,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:55:43,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 185 [2022-07-13 22:55:43,872 INFO L390 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 19 treesize of output 11 [2022-07-13 22:55:43,915 INFO L390 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 19 treesize of output 11 [2022-07-13 22:55:46,199 INFO L390 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 19 treesize of output 11 [2022-07-13 22:55:46,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 121 [2022-07-13 22:55:46,576 INFO L390 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 0 case distinctions, treesize of input 189 treesize of output 168 [2022-07-13 22:55:46,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 44 [2022-07-13 22:56:09,711 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8990 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8990)))) (exists ((v_ArrVal_8991 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8991))))) is different from true [2022-07-13 22:56:21,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-13 22:56:21,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 22:56:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 295 proven. 75 refuted. 30 times theorem prover too weak. 81 trivial. 25 not checked. [2022-07-13 22:56:21,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:56:22,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:56:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35016142] [2022-07-13 22:56:22,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:56:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544270320] [2022-07-13 22:56:22,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544270320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:56:22,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:56:22,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-07-13 22:56:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180722699] [2022-07-13 22:56:22,224 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:56:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-13 22:56:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:56:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-13 22:56:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1538, Unknown=57, NotChecked=332, Total=2070 [2022-07-13 22:56:22,226 INFO L87 Difference]: Start difference. First operand 638 states and 998 transitions. Second operand has 45 states, 40 states have (on average 4.175) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-13 22:56:28,028 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 39 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:56:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:56:42,591 INFO L93 Difference]: Finished difference Result 1481 states and 2448 transitions. [2022-07-13 22:56:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:56:42,592 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 4.175) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) Word has length 289 [2022-07-13 22:56:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:56:42,598 INFO L225 Difference]: With dead ends: 1481 [2022-07-13 22:56:42,598 INFO L226 Difference]: Without dead ends: 973 [2022-07-13 22:56:42,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=180, Invalid=1926, Unknown=72, NotChecked=372, Total=2550 [2022-07-13 22:56:42,601 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 262 mSDsluCounter, 7832 mSDsCounter, 0 mSdLazyCounter, 2962 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 8524 SdHoareTripleChecker+Invalid, 13957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10757 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:56:42,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 8524 Invalid, 13957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2962 Invalid, 0 Unknown, 10757 Unchecked, 2.6s Time] [2022-07-13 22:56:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-13 22:56:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 772. [2022-07-13 22:56:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 513 states have (on average 1.1949317738791423) internal successors, (613), 525 states have internal predecessors, (613), 192 states have call successors, (192), 48 states have call predecessors, (192), 65 states have return successors, (446), 199 states have call predecessors, (446), 190 states have call successors, (446) [2022-07-13 22:56:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1251 transitions. [2022-07-13 22:56:42,641 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1251 transitions. Word has length 289 [2022-07-13 22:56:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:56:42,642 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1251 transitions. [2022-07-13 22:56:42,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 4.175) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-13 22:56:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1251 transitions. [2022-07-13 22:56:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-13 22:56:42,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:56:42,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:56:42,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 22:56:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 22:56:42,867 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:56:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:56:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1494020326, now seen corresponding path program 1 times [2022-07-13 22:56:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:56:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948177389] [2022-07-13 22:56:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:56:42,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:56:42,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667838750] [2022-07-13 22:56:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:42,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:56:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:56:42,949 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:56:42,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 22:56:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:56:43,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 3562 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:56:43,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:56:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:56:43,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:56:43,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:56:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948177389] [2022-07-13 22:56:43,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:56:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667838750] [2022-07-13 22:56:43,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667838750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:56:43,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:56:43,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:56:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319858215] [2022-07-13 22:56:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:56:43,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:56:43,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:56:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:56:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:56:43,960 INFO L87 Difference]: Start difference. First operand 772 states and 1251 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:56:45,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 22:56:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:56:46,048 INFO L93 Difference]: Finished difference Result 1459 states and 2494 transitions. [2022-07-13 22:56:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:56:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 293 [2022-07-13 22:56:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:56:46,054 INFO L225 Difference]: With dead ends: 1459 [2022-07-13 22:56:46,054 INFO L226 Difference]: Without dead ends: 772 [2022-07-13 22:56:46,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:56:46,058 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 7 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:56:46,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2411 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 22:56:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-13 22:56:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2022-07-13 22:56:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 513 states have (on average 1.1871345029239766) internal successors, (609), 525 states have internal predecessors, (609), 192 states have call successors, (192), 48 states have call predecessors, (192), 65 states have return successors, (404), 199 states have call predecessors, (404), 190 states have call successors, (404) [2022-07-13 22:56:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1205 transitions. [2022-07-13 22:56:46,090 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1205 transitions. Word has length 293 [2022-07-13 22:56:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:56:46,091 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1205 transitions. [2022-07-13 22:56:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:56:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1205 transitions. [2022-07-13 22:56:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-13 22:56:46,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:56:46,093 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:56:46,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 22:56:46,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-13 22:56:46,318 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:56:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:56:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2055864463, now seen corresponding path program 1 times [2022-07-13 22:56:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:56:46,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646663315] [2022-07-13 22:56:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:56:46,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:56:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152912288] [2022-07-13 22:56:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:46,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:56:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:56:46,388 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:56:46,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 22:56:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:56:47,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 22:56:47,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:56:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 296 proven. 11 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-13 22:56:47,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:56:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-13 22:56:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:56:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646663315] [2022-07-13 22:56:48,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:56:48,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152912288] [2022-07-13 22:56:48,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152912288] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:56:48,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:56:48,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-07-13 22:56:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100601138] [2022-07-13 22:56:48,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:56:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:56:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:56:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:56:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:56:48,784 INFO L87 Difference]: Start difference. First operand 772 states and 1205 transitions. Second operand has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (40), 3 states have call predecessors, (40), 10 states have return successors, (43), 12 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-13 22:56:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:56:50,433 INFO L93 Difference]: Finished difference Result 1493 states and 2443 transitions. [2022-07-13 22:56:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:56:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (40), 3 states have call predecessors, (40), 10 states have return successors, (43), 12 states have call predecessors, (43), 7 states have call successors, (43) Word has length 299 [2022-07-13 22:56:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:56:50,439 INFO L225 Difference]: With dead ends: 1493 [2022-07-13 22:56:50,439 INFO L226 Difference]: Without dead ends: 909 [2022-07-13 22:56:50,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 567 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 22:56:50,442 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 21 mSDsluCounter, 16407 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17055 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:56:50,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17055 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 22:56:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-07-13 22:56:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 850. [2022-07-13 22:56:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 583 states have (on average 1.1921097770154374) internal successors, (695), 594 states have internal predecessors, (695), 197 states have call successors, (197), 48 states have call predecessors, (197), 68 states have return successors, (462), 208 states have call predecessors, (462), 195 states have call successors, (462) [2022-07-13 22:56:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1354 transitions. [2022-07-13 22:56:50,481 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1354 transitions. Word has length 299 [2022-07-13 22:56:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:56:50,482 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1354 transitions. [2022-07-13 22:56:50,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.538461538461538) internal successors, (170), 21 states have internal predecessors, (170), 8 states have call successors, (40), 3 states have call predecessors, (40), 10 states have return successors, (43), 12 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-13 22:56:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1354 transitions. [2022-07-13 22:56:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-13 22:56:50,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:56:50,485 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:56:50,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-13 22:56:50,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-13 22:56:50,692 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:56:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:56:50,692 INFO L85 PathProgramCache]: Analyzing trace with hash 166201257, now seen corresponding path program 2 times [2022-07-13 22:56:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:56:50,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216303296] [2022-07-13 22:56:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:50,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:56:50,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:56:50,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818975251] [2022-07-13 22:56:50,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:56:50,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:56:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:56:50,758 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:56:50,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 22:56:51,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:56:51,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:56:51,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 3576 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:56:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:56:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-13 22:56:52,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:56:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:56:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216303296] [2022-07-13 22:56:52,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:56:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818975251] [2022-07-13 22:56:52,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818975251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:56:52,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:56:52,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:56:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43712260] [2022-07-13 22:56:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:56:52,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:56:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:56:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:56:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:56:52,036 INFO L87 Difference]: Start difference. First operand 850 states and 1354 transitions. Second operand has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-13 22:56:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:56:52,321 INFO L93 Difference]: Finished difference Result 1686 states and 2785 transitions. [2022-07-13 22:56:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:56:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 301 [2022-07-13 22:56:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:56:52,326 INFO L225 Difference]: With dead ends: 1686 [2022-07-13 22:56:52,326 INFO L226 Difference]: Without dead ends: 921 [2022-07-13 22:56:52,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:56:52,331 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 16 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7059 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:56:52,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7059 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:56:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-07-13 22:56:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 869. [2022-07-13 22:56:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 601 states have (on average 1.1863560732113145) internal successors, (713), 606 states have internal predecessors, (713), 197 states have call successors, (197), 48 states have call predecessors, (197), 69 states have return successors, (466), 215 states have call predecessors, (466), 195 states have call successors, (466) [2022-07-13 22:56:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1376 transitions. [2022-07-13 22:56:52,386 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1376 transitions. Word has length 301 [2022-07-13 22:56:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:56:52,387 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1376 transitions. [2022-07-13 22:56:52,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-13 22:56:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1376 transitions. [2022-07-13 22:56:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-13 22:56:52,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:56:52,390 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:56:52,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-13 22:56:52,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 22:56:52,611 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:56:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:56:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 770174165, now seen corresponding path program 3 times [2022-07-13 22:56:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:56:52,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589999092] [2022-07-13 22:56:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:56:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:56:52,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:56:52,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815053169] [2022-07-13 22:56:52,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:56:52,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:56:52,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:56:52,671 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:56:52,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process