./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_hash_table_get_entry_count_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 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:03:48,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:03:48,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:03:48,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:03:48,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:03:48,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:03:48,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:03:48,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:03:48,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:03:48,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:03:48,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:03:48,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:03:48,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:03:48,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:03:48,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:03:48,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:03:48,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:03:48,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:03:48,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:03:48,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:03:48,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:03:48,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:03:48,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:03:48,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:03:48,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:03:48,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:03:48,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:03:48,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:03:48,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:03:48,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:03:48,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:03:48,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:03:48,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:03:48,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:03:48,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:03:48,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:03:48,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:03:48,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:03:48,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:03:48,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:03:48,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:03:48,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:03:48,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:03:48,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:03:48,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:03:48,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:03:48,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:03:48,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:03:48,894 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:03:48,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:03:48,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:03:48,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:03:48,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:03:48,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:03:48,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:03:48,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:03:48,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:03:48,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:03:48,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:03:48,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:03:48,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:03:48,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2021-11-06 11:03:49,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:03:49,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:03:49,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:03:49,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:03:49,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:03:49,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-06 11:03:49,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/033c25869/8f0fac20ccae4ce4807f5888d4b2d17b/FLAG9227c8c6a [2021-11-06 11:03:49,803 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:03:49,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-11-06 11:03:49,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/033c25869/8f0fac20ccae4ce4807f5888d4b2d17b/FLAG9227c8c6a [2021-11-06 11:03:49,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/033c25869/8f0fac20ccae4ce4807f5888d4b2d17b [2021-11-06 11:03:49,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:03:49,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:03:49,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:03:49,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:03:49,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:03:49,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:49" (1/1) ... [2021-11-06 11:03:49,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64db87cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:49, skipping insertion in model container [2021-11-06 11:03:49,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:49" (1/1) ... [2021-11-06 11:03:49,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:03:50,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:03:50,330 WARN L228 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_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-06 11:03:50,338 WARN L228 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_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-06 11:03:50,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:03:50,367 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:03:51,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:03:51,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:03:51,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:03:51,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:03:51,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:03:51,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:03:51,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:03:51,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:03:51,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:03:51,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:03:51,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:03:51,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,635 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,641 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:03:51,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:03:51,752 WARN L228 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_hash_table_get_entry_count_harness.i[4504,4517] [2021-11-06 11:03:51,753 WARN L228 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_hash_table_get_entry_count_harness.i[4564,4577] [2021-11-06 11:03:51,754 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:03:51,754 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:03:51,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,828 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:03:51,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:03:51,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:03:51,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:03:51,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:03:51,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:03:51,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:03:51,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:03:51,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:03:51,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:03:51,843 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:03:51,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:03:51,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:03:52,142 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:03:52,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52 WrapperNode [2021-11-06 11:03:52,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:03:52,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:03:52,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:03:52,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:03:52,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:03:52,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:03:52,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:03:52,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:03:52,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:03:52,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:03:52,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:03:52,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:03:52,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (1/1) ... [2021-11-06 11:03:52,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:03:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:03:52,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 11:03:52,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 11:03:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:03:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:03:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:03:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:03:59,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:03:59,266 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-06 11:03:59,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:59 BoogieIcfgContainer [2021-11-06 11:03:59,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:03:59,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:03:59,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:03:59,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:03:59,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:03:49" (1/3) ... [2021-11-06 11:03:59,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53daed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:59, skipping insertion in model container [2021-11-06 11:03:59,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:52" (2/3) ... [2021-11-06 11:03:59,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53daed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:59, skipping insertion in model container [2021-11-06 11:03:59,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:59" (3/3) ... [2021-11-06 11:03:59,273 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2021-11-06 11:03:59,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:03:59,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 11:03:59,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:03:59,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 11:03:59,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 11:03:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:03:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:03:59,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:03:59,325 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:03:59,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:03:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:03:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2070018022, now seen corresponding path program 1 times [2021-11-06 11:03:59,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:03:59,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612921230] [2021-11-06 11:03:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:03:59,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:03:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:03:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:03:59,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:03:59,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612921230] [2021-11-06 11:03:59,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612921230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:03:59,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:03:59,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:03:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039752377] [2021-11-06 11:03:59,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:03:59,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:03:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:03:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:03:59,832 INFO L87 Difference]: Start difference. First operand has 88 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:03:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:03:59,855 INFO L93 Difference]: Finished difference Result 172 states and 219 transitions. [2021-11-06 11:03:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:03:59,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 11:03:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:03:59,862 INFO L225 Difference]: With dead ends: 172 [2021-11-06 11:03:59,862 INFO L226 Difference]: Without dead ends: 82 [2021-11-06 11:03:59,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:03:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-06 11:03:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-06 11:03:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:03:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2021-11-06 11:03:59,896 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 41 [2021-11-06 11:03:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:03:59,896 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2021-11-06 11:03:59,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:03:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2021-11-06 11:03:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:03:59,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:03:59,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:03:59,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:03:59,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:03:59,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:03:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 584946138, now seen corresponding path program 1 times [2021-11-06 11:03:59,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:03:59,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623634837] [2021-11-06 11:03:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:03:59,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:03:59,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:03:59,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036232161] [2021-11-06 11:03:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:03:59,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:03:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:04:00,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:04:00,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:04:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:00,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:04:00,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:04:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:01,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623634837] [2021-11-06 11:04:01,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:04:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036232161] [2021-11-06 11:04:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036232161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:01,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:01,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:04:01,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389263943] [2021-11-06 11:04:01,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:04:01,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:04:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:01,028 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:01,235 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2021-11-06 11:04:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:04:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 11:04:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:01,237 INFO L225 Difference]: With dead ends: 208 [2021-11-06 11:04:01,237 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 11:04:01,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:04:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 11:04:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2021-11-06 11:04:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-11-06 11:04:01,257 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 41 [2021-11-06 11:04:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:01,257 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-11-06 11:04:01,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-11-06 11:04:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:04:01,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:01,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:04:01,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:04:01,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:04:01,459 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 976385498, now seen corresponding path program 1 times [2021-11-06 11:04:01,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:01,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090892141] [2021-11-06 11:04:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:01,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:01,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:01,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090892141] [2021-11-06 11:04:01,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090892141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:01,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:01,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:04:01,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784708183] [2021-11-06 11:04:01,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:04:01,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:04:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:04:01,910 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:06,915 INFO L93 Difference]: Finished difference Result 184 states and 214 transitions. [2021-11-06 11:04:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:04:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 11:04:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:06,917 INFO L225 Difference]: With dead ends: 184 [2021-11-06 11:04:06,917 INFO L226 Difference]: Without dead ends: 134 [2021-11-06 11:04:06,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:04:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-06 11:04:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2021-11-06 11:04:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2021-11-06 11:04:06,924 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 45 [2021-11-06 11:04:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:06,924 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2021-11-06 11:04:06,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2021-11-06 11:04:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:04:06,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:06,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:04:06,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:04:06,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:06,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash -829052836, now seen corresponding path program 1 times [2021-11-06 11:04:06,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:06,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141527649] [2021-11-06 11:04:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:06,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:07,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:07,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141527649] [2021-11-06 11:04:07,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141527649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:07,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:07,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:07,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558172509] [2021-11-06 11:04:07,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:07,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:07,206 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:07,311 INFO L93 Difference]: Finished difference Result 181 states and 213 transitions. [2021-11-06 11:04:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:07,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 11:04:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:07,313 INFO L225 Difference]: With dead ends: 181 [2021-11-06 11:04:07,313 INFO L226 Difference]: Without dead ends: 107 [2021-11-06 11:04:07,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-06 11:04:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-06 11:04:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-06 11:04:07,319 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 45 [2021-11-06 11:04:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:07,323 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-06 11:04:07,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-06 11:04:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 11:04:07,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:07,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:04:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:04:07,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 99946677, now seen corresponding path program 1 times [2021-11-06 11:04:07,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:07,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014472940] [2021-11-06 11:04:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:07,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:07,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:07,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014472940] [2021-11-06 11:04:07,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014472940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:07,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:07,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:04:07,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728716571] [2021-11-06 11:04:07,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:04:07,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:04:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:07,645 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:12,426 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2021-11-06 11:04:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:04:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 11:04:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:12,428 INFO L225 Difference]: With dead ends: 178 [2021-11-06 11:04:12,428 INFO L226 Difference]: Without dead ends: 108 [2021-11-06 11:04:12,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:04:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-06 11:04:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-06 11:04:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-11-06 11:04:12,440 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 47 [2021-11-06 11:04:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:12,440 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-11-06 11:04:12,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-11-06 11:04:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 11:04:12,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:12,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:04:12,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 11:04:12,443 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:12,444 INFO L85 PathProgramCache]: Analyzing trace with hash -416077786, now seen corresponding path program 1 times [2021-11-06 11:04:12,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:12,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557235389] [2021-11-06 11:04:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:12,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:13,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:13,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557235389] [2021-11-06 11:04:13,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557235389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:13,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:13,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:13,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10417318] [2021-11-06 11:04:13,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:13,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:13,086 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:13,211 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2021-11-06 11:04:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 11:04:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:13,216 INFO L225 Difference]: With dead ends: 193 [2021-11-06 11:04:13,216 INFO L226 Difference]: Without dead ends: 107 [2021-11-06 11:04:13,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-06 11:04:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-11-06 11:04:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.108910891089109) internal successors, (112), 103 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-11-06 11:04:13,221 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 48 [2021-11-06 11:04:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-11-06 11:04:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-11-06 11:04:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 11:04:13,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:13,222 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:04:13,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:04:13,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1407256250, now seen corresponding path program 1 times [2021-11-06 11:04:13,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:13,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055411162] [2021-11-06 11:04:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:13,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:13,298 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:04:13,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040590349] [2021-11-06 11:04:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:13,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:04:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:04:13,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:04:13,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:04:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:15,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-06 11:04:15,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:04:15,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 11:04:15,743 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-06 11:04:15,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-06 11:04:16,632 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-06 11:04:16,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-06 11:04:17,326 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-06 11:04:17,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-06 11:04:18,544 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-06 11:04:18,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-06 11:04:19,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-06 11:04:19,466 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-06 11:04:19,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-06 11:04:20,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 11:04:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:04:37,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:04:37,935 INFO L354 Elim1Store]: treesize reduction 164, result has 28.4 percent of original size [2021-11-06 11:04:37,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 101 treesize of output 145 [2021-11-06 11:04:38,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2021-11-06 11:04:38,511 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:04:38,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2021-11-06 11:04:38,568 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:04:38,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 48 [2021-11-06 11:04:43,520 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-06 11:04:43,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 88 [2021-11-06 11:04:43,579 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:04:43,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 64 [2021-11-06 11:04:43,643 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:04:43,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2021-11-06 11:04:48,541 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-06 11:04:48,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2021-11-06 11:04:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:48,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:48,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055411162] [2021-11-06 11:04:48,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:04:48,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040590349] [2021-11-06 11:04:48,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040590349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:48,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:48,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 11:04:48,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701650162] [2021-11-06 11:04:48,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 11:04:48,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 11:04:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-06 11:04:48,739 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:20,859 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2021-11-06 11:05:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:05:20,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-06 11:05:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:20,861 INFO L225 Difference]: With dead ends: 126 [2021-11-06 11:05:20,861 INFO L226 Difference]: Without dead ends: 124 [2021-11-06 11:05:20,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-06 11:05:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-06 11:05:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2021-11-06 11:05:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 107 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2021-11-06 11:05:20,872 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 54 [2021-11-06 11:05:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:20,878 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2021-11-06 11:05:20,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2021-11-06 11:05:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 11:05:20,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:20,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:20,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:21,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-06 11:05:21,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1934306021, now seen corresponding path program 1 times [2021-11-06 11:05:21,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:21,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655146430] [2021-11-06 11:05:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:21,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:21,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:21,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744912386] [2021-11-06 11:05:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:21,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:21,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:21,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:21,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:05:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:23,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 175 conjunts are in the unsatisfiable core [2021-11-06 11:05:23,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:23,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 11:05:23,450 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-06 11:05:23,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-06 11:05:24,197 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-06 11:05:24,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-06 11:05:24,890 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-06 11:05:24,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-06 11:05:25,945 INFO L354 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2021-11-06 11:05:25,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 66 [2021-11-06 11:05:26,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2021-11-06 11:05:26,961 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-06 11:05:26,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 100 [2021-11-06 11:05:28,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 11:05:45,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:05:45,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:05:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:05:46,232 INFO L354 Elim1Store]: treesize reduction 164, result has 24.4 percent of original size [2021-11-06 11:05:46,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 101 treesize of output 133 [2021-11-06 11:05:46,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2021-11-06 11:05:46,860 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:05:46,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 91 [2021-11-06 11:05:46,902 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:05:46,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 60 [2021-11-06 11:05:54,144 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-06 11:05:54,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 96 [2021-11-06 11:05:54,190 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:05:54,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 72 [2021-11-06 11:05:54,236 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:05:54,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 57 [2021-11-06 11:05:59,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-06 11:05:59,902 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-06 11:05:59,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-06 11:05:59,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-06 11:06:00,470 INFO L354 Elim1Store]: treesize reduction 276, result has 17.1 percent of original size [2021-11-06 11:06:00,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 156 treesize of output 188 [2021-11-06 11:06:00,546 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-06 11:06:00,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 171 [2021-11-06 11:06:00,613 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-06 11:06:00,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 152 [2021-11-06 11:06:01,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 43 [2021-11-06 11:06:01,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:06:01,742 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-06 11:06:01,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 57 [2021-11-06 11:06:05,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 117 [2021-11-06 11:06:06,588 INFO L354 Elim1Store]: treesize reduction 511, result has 14.4 percent of original size [2021-11-06 11:06:06,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 150 [2021-11-06 11:06:06,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 138 [2021-11-06 11:06:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:07,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:07,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655146430] [2021-11-06 11:06:07,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:06:07,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744912386] [2021-11-06 11:06:07,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744912386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:07,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:07,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 11:06:07,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436208506] [2021-11-06 11:06:07,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 11:06:07,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 11:06:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=293, Unknown=1, NotChecked=0, Total=342 [2021-11-06 11:06:07,231 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:07,782 WARN L207 SmtUtils]: Spent 8.77 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-11-06 11:07:47,349 WARN L207 SmtUtils]: Spent 8.57 s on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-11-06 11:08:23,858 WARN L207 SmtUtils]: Spent 8.56 s on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-11-06 11:08:53,820 WARN L207 SmtUtils]: Spent 8.63 s on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-11-06 11:10:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:10:56,612 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2021-11-06 11:10:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 11:10:56,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 11:10:56,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:10:56,659 INFO L225 Difference]: With dead ends: 127 [2021-11-06 11:10:56,659 INFO L226 Difference]: Without dead ends: 125 [2021-11-06 11:10:56,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 113.9s TimeCoverageRelationStatistics Valid=148, Invalid=889, Unknown=19, NotChecked=0, Total=1056 [2021-11-06 11:10:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-06 11:10:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2021-11-06 11:10:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.09) internal successors, (109), 101 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:10:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2021-11-06 11:10:56,671 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 57 [2021-11-06 11:10:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:10:56,675 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2021-11-06 11:10:56,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:10:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2021-11-06 11:10:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:10:56,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:10:56,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:10:56,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 11:10:56,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:10:56,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:10:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:10:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 333267831, now seen corresponding path program 1 times [2021-11-06 11:10:56,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:10:56,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698621222] [2021-11-06 11:10:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:10:56,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:10:56,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:10:56,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311338475] [2021-11-06 11:10:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:10:56,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:10:56,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:10:56,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:10:56,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:10:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:10:59,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-06 11:10:59,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:10:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 11:11:00,367 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-06 11:11:00,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-06 11:11:01,413 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-06 11:11:01,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-06 11:11:02,371 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-06 11:11:02,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-06 11:11:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:11:03,549 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-06 11:11:03,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-06 11:11:04,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-06 11:11:04,480 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-06 11:11:04,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-06 11:11:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:11:25,676 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-06 11:11:25,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-06 11:11:26,999 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:11:27,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-06 11:11:27,582 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:11:27,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-06 11:11:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:28,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:28,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698621222] [2021-11-06 11:11:28,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:11:28,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311338475] [2021-11-06 11:11:28,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311338475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:28,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:28,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 11:11:28,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292744667] [2021-11-06 11:11:28,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 11:11:28,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 11:11:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:11:28,570 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:40,321 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-11-06 11:11:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:11:40,322 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 11:11:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:40,323 INFO L225 Difference]: With dead ends: 132 [2021-11-06 11:11:40,323 INFO L226 Difference]: Without dead ends: 123 [2021-11-06 11:11:40,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 11:11:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-06 11:11:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2021-11-06 11:11:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2021-11-06 11:11:40,332 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 61 [2021-11-06 11:11:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:40,332 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2021-11-06 11:11:40,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2021-11-06 11:11:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 11:11:40,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:40,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:11:40,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:11:40,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:11:40,540 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:11:40,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:40,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1712829942, now seen corresponding path program 1 times [2021-11-06 11:11:40,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:40,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157837964] [2021-11-06 11:11:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:40,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:40,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:11:40,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18262639] [2021-11-06 11:11:40,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:40,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:11:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:11:40,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:11:40,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:11:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:42,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-06 11:11:42,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:11:42,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 11:11:43,661 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-06 11:11:43,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-06 11:11:44,635 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-06 11:11:44,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-06 11:11:45,727 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-06 11:11:45,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-06 11:11:46,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:11:46,851 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-06 11:11:46,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-06 11:11:47,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-06 11:11:47,915 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-06 11:11:47,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 102 [2021-11-06 11:12:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:12:04,000 INFO L354 Elim1Store]: treesize reduction 144, result has 40.2 percent of original size [2021-11-06 11:12:04,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 93 treesize of output 169 [2021-11-06 11:12:05,319 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:12:05,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-11-06 11:12:06,024 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:12:06,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2021-11-06 11:12:06,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-11-06 11:12:06,992 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-06 11:12:06,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2021-11-06 11:12:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:12:07,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:12:07,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157837964] [2021-11-06 11:12:07,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:12:07,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18262639] [2021-11-06 11:12:07,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18262639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:12:07,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:12:07,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 11:12:07,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482931893] [2021-11-06 11:12:07,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 11:12:07,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:12:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 11:12:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-06 11:12:07,915 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:12:29,604 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-11-06 11:12:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 11:12:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 11:12:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:12:29,606 INFO L225 Difference]: With dead ends: 129 [2021-11-06 11:12:29,606 INFO L226 Difference]: Without dead ends: 120 [2021-11-06 11:12:29,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-11-06 11:12:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-06 11:12:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 80. [2021-11-06 11:12:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-11-06 11:12:29,615 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 64 [2021-11-06 11:12:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:12:29,615 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-11-06 11:12:29,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-11-06 11:12:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 11:12:29,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:12:29,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:12:29,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:12:29,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 11:12:29,817 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:12:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:12:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1974082857, now seen corresponding path program 1 times [2021-11-06 11:12:29,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:12:29,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147013520] [2021-11-06 11:12:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:29,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:12:29,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:12:29,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898166965] [2021-11-06 11:12:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:29,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:12:29,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:12:29,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:12:29,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15