./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_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_init_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:04:35,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:04:35,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:04:36,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:04:36,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:04:36,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:04:36,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:04:36,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:04:36,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:04:36,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:04:36,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:04:36,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:04:36,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:04:36,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:04:36,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:04:36,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:04:36,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:04:36,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:04:36,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:04:36,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:04:36,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:04:36,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:04:36,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:04:36,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:04:36,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:04:36,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:04:36,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:04:36,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:04:36,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:04:36,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:04:36,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:04:36,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:04:36,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:04:36,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:04:36,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:04:36,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:04:36,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:04:36,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:04:36,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:04:36,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:04:36,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:04:36,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:04:36,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:04:36,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:04:36,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:04:36,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:04:36,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:04:36,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:04:36,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:04:36,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:04:36,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:04:36,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:04:36,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:04:36,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:04:36,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:04:36,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:04:36,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:04:36,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:04:36,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:04:36,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:04:36,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:04:36,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:04:36,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:04:36,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:04:36,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:04:36,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:04:36,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:04:36,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:04:36,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:04:36,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:04:36,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:04:36,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-11-06 11:04:36,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:04:36,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:04:36,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:04:36,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:04:36,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:04:36,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-06 11:04:36,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e324f9752/b9c6b4ca41de4b8987b9c9a13c999158/FLAG1919c4ee4 [2021-11-06 11:04:36,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:04:36,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-06 11:04:36,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e324f9752/b9c6b4ca41de4b8987b9c9a13c999158/FLAG1919c4ee4 [2021-11-06 11:04:37,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e324f9752/b9c6b4ca41de4b8987b9c9a13c999158 [2021-11-06 11:04:37,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:04:37,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:04:37,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:04:37,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:04:37,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:04:37,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:37" (1/1) ... [2021-11-06 11:04:37,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171d2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:37, skipping insertion in model container [2021-11-06 11:04:37,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:37" (1/1) ... [2021-11-06 11:04:37,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:04:37,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:04:37,486 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_init_bounded_harness.i[4501,4514] [2021-11-06 11:04:37,489 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_init_bounded_harness.i[4561,4574] [2021-11-06 11:04:37,504 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:04:37,514 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:04:38,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:04:38,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:04:38,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:04:38,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:04:38,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:04:38,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:04:38,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:04:38,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:04:38,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:04:38,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:04:38,517 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:04:38,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,760 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,786 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:04:38,864 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:04:38,882 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_init_bounded_harness.i[4501,4514] [2021-11-06 11:04:38,883 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_init_bounded_harness.i[4561,4574] [2021-11-06 11:04:38,888 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:04:38,890 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:04:38,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:38,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:04:38,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:04:38,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:04:38,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:04:38,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:04:38,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:04:38,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:04:38,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:04:38,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:04:38,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:04:38,963 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:04:39,040 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:04:39,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:04:39,223 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:04:39,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39 WrapperNode [2021-11-06 11:04:39,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:04:39,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:04:39,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:04:39,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:04:39,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:04:39,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:04:39,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:04:39,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:04:39,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:04:39,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:04:39,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:04:39,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:04:39,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (1/1) ... [2021-11-06 11:04:39,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:04:39,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:04:39,485 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 11:04:39,555 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 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:04:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:04:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:04:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:04:46,622 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !true; [2021-11-06 11:04:46,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:04:46,627 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-06 11:04:46,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:46 BoogieIcfgContainer [2021-11-06 11:04:46,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:04:46,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:04:46,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:04:46,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:04:46,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:04:37" (1/3) ... [2021-11-06 11:04:46,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d6028a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:46, skipping insertion in model container [2021-11-06 11:04:46,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:39" (2/3) ... [2021-11-06 11:04:46,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d6028a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:46, skipping insertion in model container [2021-11-06 11:04:46,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:46" (3/3) ... [2021-11-06 11:04:46,636 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-11-06 11:04:46,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:04:46,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 11:04:46,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:04:46,682 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 11:04:46,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 11:04:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 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 11:04:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 11:04:46,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:46,716 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] [2021-11-06 11:04:46,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:46,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash -227722536, now seen corresponding path program 1 times [2021-11-06 11:04:46,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:46,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396215132] [2021-11-06 11:04:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:46,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:47,198 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 11:04:47,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:47,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396215132] [2021-11-06 11:04:47,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396215132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:47,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:47,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:04:47,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030908648] [2021-11-06 11:04:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:04:47,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:04:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:04:47,213 INFO L87 Difference]: Start difference. First operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 11:04:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:47,228 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-11-06 11:04:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:04:47,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-06 11:04:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:47,234 INFO L225 Difference]: With dead ends: 243 [2021-11-06 11:04:47,234 INFO L226 Difference]: Without dead ends: 116 [2021-11-06 11:04:47,235 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 11:04:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-06 11:04:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-06 11:04:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 115 states have internal predecessors, (139), 0 states have call successors, (0), 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 11:04:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-06 11:04:47,266 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 33 [2021-11-06 11:04:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:47,266 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-06 11:04:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 11:04:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-06 11:04:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 11:04:47,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:47,269 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] [2021-11-06 11:04:47,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:04:47,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1424964684, now seen corresponding path program 1 times [2021-11-06 11:04:47,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:47,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299852686] [2021-11-06 11:04:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:47,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:47,536 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 11:04:47,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:47,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299852686] [2021-11-06 11:04:47,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299852686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:47,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:47,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:47,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630522773] [2021-11-06 11:04:47,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:47,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:47,538 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 11:04:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:47,645 INFO L93 Difference]: Finished difference Result 298 states and 359 transitions. [2021-11-06 11:04:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:47,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-06 11:04:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:47,647 INFO L225 Difference]: With dead ends: 298 [2021-11-06 11:04:47,647 INFO L226 Difference]: Without dead ends: 209 [2021-11-06 11:04:47,648 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 11:04:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-06 11:04:47,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 118. [2021-11-06 11:04:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:04:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-11-06 11:04:47,655 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 33 [2021-11-06 11:04:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:47,656 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-11-06 11:04:47,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 11:04:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2021-11-06 11:04:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 11:04:47,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:47,657 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] [2021-11-06 11:04:47,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:04:47,657 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:47,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:47,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1779813818, now seen corresponding path program 1 times [2021-11-06 11:04:47,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:47,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140129004] [2021-11-06 11:04:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:47,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:47,888 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 11:04:47,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:47,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140129004] [2021-11-06 11:04:47,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140129004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:47,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:47,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:47,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956736193] [2021-11-06 11:04:47,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:47,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:47,890 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 11:04:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:47,980 INFO L93 Difference]: Finished difference Result 228 states and 271 transitions. [2021-11-06 11:04:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-06 11:04:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:47,986 INFO L225 Difference]: With dead ends: 228 [2021-11-06 11:04:47,986 INFO L226 Difference]: Without dead ends: 207 [2021-11-06 11:04:47,987 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 11:04:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-06 11:04:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2021-11-06 11:04:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-11-06 11:04:47,995 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 35 [2021-11-06 11:04:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:47,996 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-11-06 11:04:47,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 11:04:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-11-06 11:04:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 11:04:47,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:47,997 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] [2021-11-06 11:04:47,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:04:47,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 194776032, now seen corresponding path program 1 times [2021-11-06 11:04:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:47,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838134482] [2021-11-06 11:04:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:47,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:48,197 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 11:04:48,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:48,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838134482] [2021-11-06 11:04:48,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838134482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:48,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:48,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:48,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202520938] [2021-11-06 11:04:48,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:48,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:48,199 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 11:04:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:48,263 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2021-11-06 11:04:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:48,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-06 11:04:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:48,267 INFO L225 Difference]: With dead ends: 141 [2021-11-06 11:04:48,267 INFO L226 Difference]: Without dead ends: 120 [2021-11-06 11:04:48,268 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 11:04:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-06 11:04:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-11-06 11:04:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 0 states have call successors, (0), 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 11:04:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2021-11-06 11:04:48,272 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 36 [2021-11-06 11:04:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:48,272 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2021-11-06 11:04:48,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 11:04:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2021-11-06 11:04:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 11:04:48,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:48,273 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] [2021-11-06 11:04:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:04:48,274 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 11:04:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash -150404056, now seen corresponding path program 1 times [2021-11-06 11:04:48,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:48,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485347010] [2021-11-06 11:04:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:48,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:48,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:04:48,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266444020] [2021-11-06 11:04:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:48,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:04:48,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:04:48,363 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 11:04:48,364 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 11:04:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:49,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:04:49,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:04:49,238 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 11:04:49,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:49,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485347010] [2021-11-06 11:04:49,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:04:49,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266444020] [2021-11-06 11:04:49,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266444020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:49,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:49,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:04:49,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489733568] [2021-11-06 11:04:49,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:04:49,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:04:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:49,240 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 11:04:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:49,426 INFO L93 Difference]: Finished difference Result 266 states and 312 transitions. [2021-11-06 11:04:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:04:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-06 11:04:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:49,427 INFO L225 Difference]: With dead ends: 266 [2021-11-06 11:04:49,428 INFO L226 Difference]: Without dead ends: 193 [2021-11-06 11:04:49,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:04:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-06 11:04:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2021-11-06 11:04:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 120 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-11-06 11:04:49,432 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 43 [2021-11-06 11:04:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:49,432 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-11-06 11:04:49,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 11:04:49,432 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-11-06 11:04:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:04:49,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:49,433 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 11:04:49,459 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 11:04:49,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:04:49,634 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 11:04:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -393010388, now seen corresponding path program 1 times [2021-11-06 11:04:49,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:49,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607437902] [2021-11-06 11:04:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:49,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:49,990 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 11:04:49,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:49,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607437902] [2021-11-06 11:04:49,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607437902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:49,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:49,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:49,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110347049] [2021-11-06 11:04:49,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:49,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:49,992 INFO L87 Difference]: Start difference. First operand 121 states and 142 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 11:04:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:50,083 INFO L93 Difference]: Finished difference Result 320 states and 378 transitions. [2021-11-06 11:04:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:50,084 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 11:04:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:50,085 INFO L225 Difference]: With dead ends: 320 [2021-11-06 11:04:50,085 INFO L226 Difference]: Without dead ends: 220 [2021-11-06 11:04:50,087 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 11:04:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-06 11:04:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 124. [2021-11-06 11:04:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1983471074380165) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2021-11-06 11:04:50,100 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 45 [2021-11-06 11:04:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:50,100 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2021-11-06 11:04:50,100 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 11:04:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2021-11-06 11:04:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:04:50,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:50,101 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 11:04:50,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:04:50,101 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 11:04:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -902483478, now seen corresponding path program 1 times [2021-11-06 11:04:50,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:50,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657036068] [2021-11-06 11:04:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:50,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:50,538 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 11:04:50,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:50,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657036068] [2021-11-06 11:04:50,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657036068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:50,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:50,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:04:50,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399995470] [2021-11-06 11:04:50,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:04:50,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:50,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:04:50,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:04:50,540 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 11:04:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:58,136 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2021-11-06 11:04:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:04:58,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 11:04:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:58,138 INFO L225 Difference]: With dead ends: 157 [2021-11-06 11:04:58,160 INFO L226 Difference]: Without dead ends: 130 [2021-11-06 11:04:58,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:04:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-06 11:04:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-06 11:04:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:04:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2021-11-06 11:04:58,164 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 45 [2021-11-06 11:04:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:58,164 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2021-11-06 11:04:58,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 11:04:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2021-11-06 11:04:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:04:58,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:58,165 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 11:04:58,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:04:58,165 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 11:04:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash 872523884, now seen corresponding path program 1 times [2021-11-06 11:04:58,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:58,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150866098] [2021-11-06 11:04:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:58,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:58,345 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 11:04:58,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:58,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150866098] [2021-11-06 11:04:58,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150866098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:58,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:58,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:04:58,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695961893] [2021-11-06 11:04:58,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:04:58,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:04:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:04:58,347 INFO L87 Difference]: Start difference. First operand 126 states and 147 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 11:04:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:04:58,399 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2021-11-06 11:04:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:04:58,400 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 11:04:58,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:04:58,400 INFO L225 Difference]: With dead ends: 156 [2021-11-06 11:04:58,401 INFO L226 Difference]: Without dead ends: 124 [2021-11-06 11:04:58,401 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 11:04:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-06 11:04:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-06 11:04:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:04:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2021-11-06 11:04:58,404 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 45 [2021-11-06 11:04:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:04:58,404 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2021-11-06 11:04:58,404 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 11:04:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2021-11-06 11:04:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 11:04:58,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:04:58,405 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 11:04:58,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:04:58,405 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:04:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:04:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1167810907, now seen corresponding path program 1 times [2021-11-06 11:04:58,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:04:58,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520801190] [2021-11-06 11:04:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:04:58,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:04:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:04:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:04:58,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:04:58,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520801190] [2021-11-06 11:04:58,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520801190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:04:58,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:04:58,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:04:58,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693545904] [2021-11-06 11:04:58,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:04:58,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:04:58,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:04:58,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:04:58,721 INFO L87 Difference]: Start difference. First operand 124 states and 143 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 11:05:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:03,799 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2021-11-06 11:05:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:05:03,800 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 11:05:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:03,800 INFO L225 Difference]: With dead ends: 153 [2021-11-06 11:05:03,800 INFO L226 Difference]: Without dead ends: 125 [2021-11-06 11:05:03,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:05:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-06 11:05:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-06 11:05:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.165289256198347) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:05:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2021-11-06 11:05:03,804 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2021-11-06 11:05:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:03,804 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2021-11-06 11:05:03,804 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 11:05:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2021-11-06 11:05:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 11:05:03,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:03,804 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 11:05:03,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:05:03,805 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash -128406987, now seen corresponding path program 1 times [2021-11-06 11:05:03,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:03,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136485346] [2021-11-06 11:05:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:03,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:04,238 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 11:05:04,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:04,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136485346] [2021-11-06 11:05:04,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136485346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:04,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:04,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:05:04,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763210091] [2021-11-06 11:05:04,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:05:04,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:05:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:04,240 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 11:05:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:09,613 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2021-11-06 11:05:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:05:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 11:05:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:09,614 INFO L225 Difference]: With dead ends: 164 [2021-11-06 11:05:09,614 INFO L226 Difference]: Without dead ends: 128 [2021-11-06 11:05:09,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:05:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-06 11:05:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-11-06 11:05:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.146341463414634) internal successors, (141), 125 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:05:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2021-11-06 11:05:09,618 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 48 [2021-11-06 11:05:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:09,618 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2021-11-06 11:05:09,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 11:05:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2021-11-06 11:05:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:05:09,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:09,619 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 11:05:09,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:05:09,619 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1494937261, now seen corresponding path program 1 times [2021-11-06 11:05:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:09,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778824760] [2021-11-06 11:05:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:09,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:09,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:09,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174325722] [2021-11-06 11:05:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:09,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:09,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:09,687 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 11:05:09,688 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 11:05:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:10,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:05:10,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:10,628 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 11:05:10,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:10,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778824760] [2021-11-06 11:05:10,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:10,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174325722] [2021-11-06 11:05:10,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174325722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:10,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:10,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:10,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448935910] [2021-11-06 11:05:10,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:10,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:10,630 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 11:05:10,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:10,675 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2021-11-06 11:05:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:10,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 11:05:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:10,676 INFO L225 Difference]: With dead ends: 201 [2021-11-06 11:05:10,677 INFO L226 Difference]: Without dead ends: 126 [2021-11-06 11:05:10,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 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 11:05:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-06 11:05:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-06 11:05:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1333333333333333) internal successors, (136), 122 states have internal predecessors, (136), 0 states have call successors, (0), 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 11:05:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2021-11-06 11:05:10,680 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 61 [2021-11-06 11:05:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:10,680 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2021-11-06 11:05:10,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 11:05:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2021-11-06 11:05:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 11:05:10,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:10,681 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 11:05:10,717 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 11:05:10,881 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,SelfDestructingSolverStorable10 [2021-11-06 11:05:10,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -810018571, now seen corresponding path program 1 times [2021-11-06 11:05:10,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:10,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135472165] [2021-11-06 11:05:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:10,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:10,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:10,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049282068] [2021-11-06 11:05:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:10,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:10,970 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 11:05:10,971 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 11:05:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:11,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:05:11,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:11,906 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 11:05:11,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135472165] [2021-11-06 11:05:11,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049282068] [2021-11-06 11:05:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049282068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:11,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36416699] [2021-11-06 11:05:11,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:11,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:11,907 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 11:05:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:12,082 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2021-11-06 11:05:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 11:05:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:12,083 INFO L225 Difference]: With dead ends: 240 [2021-11-06 11:05:12,083 INFO L226 Difference]: Without dead ends: 200 [2021-11-06 11:05:12,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-06 11:05:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-06 11:05:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1300813008130082) internal successors, (139), 125 states have internal predecessors, (139), 0 states have call successors, (0), 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 11:05:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2021-11-06 11:05:12,087 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 64 [2021-11-06 11:05:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:12,087 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2021-11-06 11:05:12,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 11:05:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2021-11-06 11:05:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 11:05:12,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:12,088 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, 1, 1] [2021-11-06 11:05:12,112 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 11:05:12,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:12,300 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 536829777, now seen corresponding path program 1 times [2021-11-06 11:05:12,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:12,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985514320] [2021-11-06 11:05:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:12,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:12,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:12,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194043334] [2021-11-06 11:05:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:12,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:12,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:12,386 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 11:05:12,393 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 11:05:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:05:13,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:13,301 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 11:05:13,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:13,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985514320] [2021-11-06 11:05:13,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:13,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194043334] [2021-11-06 11:05:13,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194043334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:13,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:13,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:13,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632388052] [2021-11-06 11:05:13,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:13,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:13,303 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:13,503 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-06 11:05:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-06 11:05:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:13,510 INFO L225 Difference]: With dead ends: 166 [2021-11-06 11:05:13,510 INFO L226 Difference]: Without dead ends: 126 [2021-11-06 11:05:13,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 11:05:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-06 11:05:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-06 11:05:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.125) internal successors, (135), 122 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:05:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-11-06 11:05:13,514 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 66 [2021-11-06 11:05:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:13,514 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-11-06 11:05:13,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-11-06 11:05:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 11:05:13,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:13,515 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, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:13,539 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 11:05:13,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:13,715 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash -165392724, now seen corresponding path program 1 times [2021-11-06 11:05:13,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:13,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252674564] [2021-11-06 11:05:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:13,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:13,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:13,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804870956] [2021-11-06 11:05:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:13,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:13,779 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 11:05:13,826 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 11:05:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:14,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:05:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:14,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:14,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252674564] [2021-11-06 11:05:14,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:14,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804870956] [2021-11-06 11:05:14,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804870956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:14,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:14,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:14,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226637729] [2021-11-06 11:05:14,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:14,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:14,793 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 11:05:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:14,888 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2021-11-06 11:05:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:05:14,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-06 11:05:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:14,896 INFO L225 Difference]: With dead ends: 251 [2021-11-06 11:05:14,896 INFO L226 Difference]: Without dead ends: 210 [2021-11-06 11:05:14,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:05:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-06 11:05:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 126. [2021-11-06 11:05:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-06 11:05:14,905 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 70 [2021-11-06 11:05:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:14,905 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-06 11:05:14,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 11:05:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-06 11:05:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 11:05:14,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:14,909 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:14,932 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 11:05:15,123 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,SelfDestructingSolverStorable13 [2021-11-06 11:05:15,123 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 799465288, now seen corresponding path program 1 times [2021-11-06 11:05:15,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:15,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449802179] [2021-11-06 11:05:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:15,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:15,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:15,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476071376] [2021-11-06 11:05:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:15,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:15,193 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 11:05:15,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 11:05:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:15,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:05:15,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:16,244 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 11:05:16,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:16,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449802179] [2021-11-06 11:05:16,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:16,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476071376] [2021-11-06 11:05:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476071376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:16,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:16,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:16,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644221567] [2021-11-06 11:05:16,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:16,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:16,245 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 11:05:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:16,454 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-11-06 11:05:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-06 11:05:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:16,460 INFO L225 Difference]: With dead ends: 167 [2021-11-06 11:05:16,460 INFO L226 Difference]: Without dead ends: 121 [2021-11-06 11:05:16,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 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 11:05:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-06 11:05:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-06 11:05:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1101694915254237) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 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 11:05:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-11-06 11:05:16,464 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 72 [2021-11-06 11:05:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:16,464 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-11-06 11:05:16,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 11:05:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-11-06 11:05:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 11:05:16,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:16,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:16,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:16,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 11:05:16,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1306943225, now seen corresponding path program 1 times [2021-11-06 11:05:16,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:16,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327982139] [2021-11-06 11:05:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:16,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:16,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:16,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25367256] [2021-11-06 11:05:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:16,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:16,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:16,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:05:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:17,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 11:05:17,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:17,773 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 11:05:17,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:17,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327982139] [2021-11-06 11:05:17,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:17,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25367256] [2021-11-06 11:05:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25367256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:17,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:17,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:17,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176323804] [2021-11-06 11:05:17,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:17,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:17,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:17,775 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 11:05:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:17,845 INFO L93 Difference]: Finished difference Result 305 states and 327 transitions. [2021-11-06 11:05:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:17,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-06 11:05:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:17,850 INFO L225 Difference]: With dead ends: 305 [2021-11-06 11:05:17,850 INFO L226 Difference]: Without dead ends: 212 [2021-11-06 11:05:17,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 11:05:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-06 11:05:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 121. [2021-11-06 11:05:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 120 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-11-06 11:05:17,858 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 80 [2021-11-06 11:05:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:17,858 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-11-06 11:05:17,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 11:05:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-11-06 11:05:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 11:05:17,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:17,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:17,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:18,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:18,073 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1199107289, now seen corresponding path program 1 times [2021-11-06 11:05:18,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:18,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71264177] [2021-11-06 11:05:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:18,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:18,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:18,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788362614] [2021-11-06 11:05:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:18,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:18,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:18,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:18,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15