./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_foreach_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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:59:30,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:59:30,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:59:30,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:59:30,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:59:30,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:59:30,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:59:30,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:59:30,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:59:30,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:59:30,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:59:30,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:59:30,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:59:30,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:59:30,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:59:30,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:59:30,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:59:30,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:59:30,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:59:30,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:59:30,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:59:30,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:59:30,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:59:30,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:59:30,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:59:30,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:59:30,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:59:30,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:59:30,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:59:30,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:59:30,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:59:30,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:59:30,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:59:30,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:59:30,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:59:30,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:59:30,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:59:30,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:59:30,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:59:30,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:59:30,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:59:30,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:59:31,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:59:31,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:59:31,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:59:31,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:59:31,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:59:31,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:59:31,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:59:31,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:59:31,023 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:59:31,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:59:31,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:59:31,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:59:31,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:59:31,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:59:31,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:59:31,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:59:31,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:31,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:59:31,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:59:31,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:59:31,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:59:31,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:59:31,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:59:31,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:59:31,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:59:31,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:59:31,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-12-22 13:59:31,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:59:31,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:59:31,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:59:31,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:59:31,240 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:59:31,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-22 13:59:31,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e6ee176/9c84830b4ac74188b3b2419391d0df75/FLAG79a125cbc [2021-12-22 13:59:31,858 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:59:31,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-22 13:59:31,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e6ee176/9c84830b4ac74188b3b2419391d0df75/FLAG79a125cbc [2021-12-22 13:59:32,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e6ee176/9c84830b4ac74188b3b2419391d0df75 [2021-12-22 13:59:32,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:59:32,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:59:32,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:32,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:59:32,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:59:32,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:32" (1/1) ... [2021-12-22 13:59:32,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f7bbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:32, skipping insertion in model container [2021-12-22 13:59:32,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:32" (1/1) ... [2021-12-22 13:59:32,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:59:32,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:59:32,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-12-22 13:59:32,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-12-22 13:59:33,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,415 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:33,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:33,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:33,418 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:33,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:33,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:33,420 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:33,420 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:33,420 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:33,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:33,545 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:33,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,821 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,821 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:33,882 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:59:33,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-12-22 13:59:33,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-12-22 13:59:33,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:33,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:33,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:33,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:33,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:33,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:33,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:33,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:33,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:33,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:33,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:33,974 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:34,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,089 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,089 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:34,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:34,266 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:59:34,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34 WrapperNode [2021-12-22 13:59:34,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:34,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:34,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:59:34,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:59:34,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,446 INFO L137 Inliner]: procedures = 775, calls = 2435, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 938 [2021-12-22 13:59:34,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:34,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:59:34,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:59:34,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:59:34,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:59:34,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:59:34,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:59:34,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:59:34,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (1/1) ... [2021-12-22 13:59:34,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:34,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:34,596 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) [2021-12-22 13:59:34,602 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 [2021-12-22 13:59:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 13:59:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:59:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 13:59:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 13:59:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:59:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:59:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-22 13:59:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-22 13:59:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:59:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:59:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:59:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:59:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:59:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:59:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:59:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 13:59:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 13:59:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 13:59:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 13:59:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:59:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-22 13:59:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-22 13:59:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:59:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:59:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-22 13:59:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-22 13:59:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-22 13:59:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-22 13:59:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 13:59:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 13:59:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-22 13:59:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-22 13:59:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-22 13:59:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-22 13:59:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:59:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:59:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2021-12-22 13:59:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2021-12-22 13:59:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-22 13:59:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-22 13:59:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-22 13:59:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-22 13:59:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:59:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 13:59:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 13:59:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-22 13:59:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-22 13:59:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-12-22 13:59:34,652 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-12-22 13:59:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 13:59:34,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 13:59:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:59:34,926 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:59:34,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:59:35,053 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-12-22 13:59:35,053 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-12-22 13:59:35,662 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-12-22 13:59:35,684 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:59:35,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:59:35,697 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-22 13:59:35,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:35 BoogieIcfgContainer [2021-12-22 13:59:35,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:59:35,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:59:35,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:59:35,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:59:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:59:32" (1/3) ... [2021-12-22 13:59:35,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afdd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:35, skipping insertion in model container [2021-12-22 13:59:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:34" (2/3) ... [2021-12-22 13:59:35,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afdd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:35, skipping insertion in model container [2021-12-22 13:59:35,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:35" (3/3) ... [2021-12-22 13:59:35,705 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2021-12-22 13:59:35,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:59:35,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:59:35,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:59:35,745 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 [2021-12-22 13:59:35,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:59:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-12-22 13:59:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-22 13:59:35,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:35,767 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:35,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2021-12-22 13:59:35,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:35,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653740363] [2021-12-22 13:59:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:35,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:36,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653740363] [2021-12-22 13:59:36,275 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-22 13:59:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19698225] [2021-12-22 13:59:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:36,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:36,277 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) [2021-12-22 13:59:36,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:59:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:59:36,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-22 13:59:36,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:36,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19698225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:36,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:36,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:59:36,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481129603] [2021-12-22 13:59:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:36,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:59:36,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:59:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:36,954 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 13:59:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:36,997 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2021-12-22 13:59:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:59:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2021-12-22 13:59:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:37,006 INFO L225 Difference]: With dead ends: 567 [2021-12-22 13:59:37,007 INFO L226 Difference]: Without dead ends: 282 [2021-12-22 13:59:37,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:37,014 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:37,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-22 13:59:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-12-22 13:59:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-12-22 13:59:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2021-12-22 13:59:37,062 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2021-12-22 13:59:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:37,062 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2021-12-22 13:59:37,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 13:59:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2021-12-22 13:59:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-22 13:59:37,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:37,065 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:37,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:37,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-22 13:59:37,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2021-12-22 13:59:37,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671109996] [2021-12-22 13:59:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:37,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:37,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:37,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666115397] [2021-12-22 13:59:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:37,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:37,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:37,352 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) [2021-12-22 13:59:37,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:59:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 13:59:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-22 13:59:38,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:59:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-22 13:59:38,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671109996] [2021-12-22 13:59:38,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:59:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666115397] [2021-12-22 13:59:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666115397] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:38,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:38,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-12-22 13:59:38,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784841275] [2021-12-22 13:59:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:38,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:38,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:59:38,352 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:59:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:38,700 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2021-12-22 13:59:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:59:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2021-12-22 13:59:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:38,710 INFO L225 Difference]: With dead ends: 512 [2021-12-22 13:59:38,711 INFO L226 Difference]: Without dead ends: 299 [2021-12-22 13:59:38,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:59:38,718 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 407 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:38,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2012 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:59:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-22 13:59:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-22 13:59:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2021-12-22 13:59:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2021-12-22 13:59:38,739 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2021-12-22 13:59:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:38,740 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2021-12-22 13:59:38,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:59:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2021-12-22 13:59:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-22 13:59:38,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:38,742 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:38,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:38,951 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,SelfDestructingSolverStorable1 [2021-12-22 13:59:38,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2021-12-22 13:59:38,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:38,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486317633] [2021-12-22 13:59:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:38,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:39,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:39,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433849518] [2021-12-22 13:59:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:39,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:39,033 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) [2021-12-22 13:59:39,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:59:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:39,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 13:59:39,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 13:59:39,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:39,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486317633] [2021-12-22 13:59:39,638 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:59:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433849518] [2021-12-22 13:59:39,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433849518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:39,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:39,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:59:39,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460169262] [2021-12-22 13:59:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:39,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:59:39,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:59:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:39,640 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 13:59:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:39,665 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2021-12-22 13:59:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:59:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2021-12-22 13:59:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:39,667 INFO L225 Difference]: With dead ends: 558 [2021-12-22 13:59:39,667 INFO L226 Difference]: Without dead ends: 304 [2021-12-22 13:59:39,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:39,669 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:39,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1504 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-22 13:59:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-12-22 13:59:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-12-22 13:59:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2021-12-22 13:59:39,684 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2021-12-22 13:59:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:39,684 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2021-12-22 13:59:39,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 13:59:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2021-12-22 13:59:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 13:59:39,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:39,686 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:39,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:39,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:39,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2021-12-22 13:59:39,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:39,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515242087] [2021-12-22 13:59:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:39,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:59:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:59:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:59:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:59:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 13:59:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-22 13:59:40,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:40,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515242087] [2021-12-22 13:59:40,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515242087] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:40,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273033510] [2021-12-22 13:59:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:40,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:40,402 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) [2021-12-22 13:59:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:59:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 13:59:40,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:41,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 13:59:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:59:41,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273033510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:41,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:41,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-12-22 13:59:41,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971932360] [2021-12-22 13:59:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:41,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:59:41,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:59:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:59:41,366 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-22 13:59:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:41,420 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2021-12-22 13:59:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:59:41,422 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2021-12-22 13:59:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:41,424 INFO L225 Difference]: With dead ends: 556 [2021-12-22 13:59:41,424 INFO L226 Difference]: Without dead ends: 313 [2021-12-22 13:59:41,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:59:41,426 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 11 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:41,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2851 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 122 Unchecked, 0.0s Time] [2021-12-22 13:59:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-22 13:59:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-22 13:59:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2021-12-22 13:59:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2021-12-22 13:59:41,461 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2021-12-22 13:59:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:41,461 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2021-12-22 13:59:41,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-22 13:59:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2021-12-22 13:59:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 13:59:41,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:41,466 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:41,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:41,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2021-12-22 13:59:41,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:41,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726892910] [2021-12-22 13:59:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:41,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:59:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:59:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:59:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:59:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 13:59:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-22 13:59:42,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:42,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726892910] [2021-12-22 13:59:42,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726892910] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:42,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389919943] [2021-12-22 13:59:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:42,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:42,037 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) [2021-12-22 13:59:42,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:59:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:59:42,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:59:42,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:42,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389919943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:42,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:42,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-22 13:59:42,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699893984] [2021-12-22 13:59:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:42,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:59:42,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:59:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:59:42,668 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-22 13:59:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:42,851 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2021-12-22 13:59:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:59:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2021-12-22 13:59:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:42,856 INFO L225 Difference]: With dead ends: 560 [2021-12-22 13:59:42,857 INFO L226 Difference]: Without dead ends: 315 [2021-12-22 13:59:42,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:59:42,859 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 413 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:42,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 925 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:59:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-22 13:59:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-22 13:59:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-22 13:59:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2021-12-22 13:59:42,876 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2021-12-22 13:59:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:42,876 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2021-12-22 13:59:42,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-22 13:59:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2021-12-22 13:59:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-22 13:59:42,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:42,877 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:42,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:43,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:43,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2021-12-22 13:59:43,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:43,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002145446] [2021-12-22 13:59:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:43,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:59:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:59:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 13:59:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 13:59:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 13:59:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-22 13:59:43,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:43,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002145446] [2021-12-22 13:59:43,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002145446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:43,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115586918] [2021-12-22 13:59:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:43,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:43,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:43,448 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) [2021-12-22 13:59:43,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 13:59:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 13:59:43,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:44,823 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-22 13:59:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-22 13:59:50,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115586918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:50,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:50,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-22 13:59:50,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753657960] [2021-12-22 13:59:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:50,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:50,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-22 13:59:50,785 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-22 13:59:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:51,005 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2021-12-22 13:59:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:59:51,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2021-12-22 13:59:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:51,007 INFO L225 Difference]: With dead ends: 567 [2021-12-22 13:59:51,007 INFO L226 Difference]: Without dead ends: 318 [2021-12-22 13:59:51,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-22 13:59:51,010 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:51,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2087 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 512 Unchecked, 0.1s Time] [2021-12-22 13:59:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-22 13:59:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-12-22 13:59:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-22 13:59:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2021-12-22 13:59:51,024 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2021-12-22 13:59:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:51,024 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2021-12-22 13:59:51,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-22 13:59:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2021-12-22 13:59:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 13:59:51,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:51,026 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:51,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:51,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:51,233 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2021-12-22 13:59:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:51,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338455535] [2021-12-22 13:59:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:51,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 13:59:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 13:59:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-22 13:59:51,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:51,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338455535] [2021-12-22 13:59:51,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338455535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:51,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:51,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-22 13:59:51,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121020665] [2021-12-22 13:59:51,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 13:59:51,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 13:59:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:59:51,756 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-22 13:59:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:54,054 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2021-12-22 13:59:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 13:59:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2021-12-22 13:59:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:54,057 INFO L225 Difference]: With dead ends: 573 [2021-12-22 13:59:54,057 INFO L226 Difference]: Without dead ends: 345 [2021-12-22 13:59:54,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-12-22 13:59:54,058 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 602 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:54,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2114 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 13:59:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-22 13:59:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2021-12-22 13:59:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2021-12-22 13:59:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2021-12-22 13:59:54,073 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2021-12-22 13:59:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:54,075 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2021-12-22 13:59:54,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-22 13:59:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2021-12-22 13:59:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 13:59:54,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:54,077 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:54,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:59:54,078 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2021-12-22 13:59:54,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048354648] [2021-12-22 13:59:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:54,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 13:59:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 13:59:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-22 13:59:54,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:54,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048354648] [2021-12-22 13:59:54,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048354648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:54,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940891243] [2021-12-22 13:59:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:54,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:54,739 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) [2021-12-22 13:59:54,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 13:59:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:55,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-22 13:59:55,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:55,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:59:55,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 13:59:55,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 13:59:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-22 13:59:55,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:55,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940891243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:55,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:55,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2021-12-22 13:59:55,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811090392] [2021-12-22 13:59:55,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:55,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:59:55,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:59:55,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-12-22 13:59:55,672 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-22 13:59:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:56,073 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2021-12-22 13:59:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:59:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 144 [2021-12-22 13:59:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:56,076 INFO L225 Difference]: With dead ends: 635 [2021-12-22 13:59:56,076 INFO L226 Difference]: Without dead ends: 376 [2021-12-22 13:59:56,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-12-22 13:59:56,077 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 478 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:56,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 2928 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 351 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2021-12-22 13:59:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-22 13:59:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2021-12-22 13:59:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2021-12-22 13:59:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2021-12-22 13:59:56,093 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 144 [2021-12-22 13:59:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:56,094 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2021-12-22 13:59:56,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-22 13:59:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2021-12-22 13:59:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-22 13:59:56,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:56,095 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:56,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:56,315 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2021-12-22 13:59:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612021484] [2021-12-22 13:59:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:56,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 13:59:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:59:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 13:59:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-22 13:59:56,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612021484] [2021-12-22 13:59:56,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612021484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706235133] [2021-12-22 13:59:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:56,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:56,965 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) [2021-12-22 13:59:56,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 13:59:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:57,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 13:59:57,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-22 13:59:57,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:57,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706235133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:57,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:57,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-12-22 13:59:57,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755522973] [2021-12-22 13:59:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:57,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:59:57,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:59:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:59:57,686 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:57,832 INFO L93 Difference]: Finished difference Result 685 states and 921 transitions. [2021-12-22 13:59:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:59:57,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2021-12-22 13:59:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:57,835 INFO L225 Difference]: With dead ends: 685 [2021-12-22 13:59:57,835 INFO L226 Difference]: Without dead ends: 384 [2021-12-22 13:59:57,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-22 13:59:57,837 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2091 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:59:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-22 13:59:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2021-12-22 13:59:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.2258064516129032) internal successors, (304), 250 states have internal predecessors, (304), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2021-12-22 13:59:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2021-12-22 13:59:57,855 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 148 [2021-12-22 13:59:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:57,855 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2021-12-22 13:59:57,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2021-12-22 13:59:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 13:59:57,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:57,857 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:57,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:58,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-22 13:59:58,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1795320927, now seen corresponding path program 2 times [2021-12-22 13:59:58,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:58,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761507053] [2021-12-22 13:59:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:58,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 13:59:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 13:59:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 13:59:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-22 13:59:58,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761507053] [2021-12-22 13:59:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761507053] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431040861] [2021-12-22 13:59:58,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:59:58,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:58,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:58,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:58,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 13:59:59,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:59:59,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:59:59,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 13:59:59,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-22 13:59:59,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431040861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:59,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:59,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-12-22 13:59:59,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987490202] [2021-12-22 13:59:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:59,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:59:59,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:59:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:59:59,622 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:59,762 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2021-12-22 13:59:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:59:59,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 159 [2021-12-22 13:59:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:59,765 INFO L225 Difference]: With dead ends: 670 [2021-12-22 13:59:59,765 INFO L226 Difference]: Without dead ends: 384 [2021-12-22 13:59:59,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-22 13:59:59,767 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:59,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2092 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:59:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-22 13:59:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 378. [2021-12-22 13:59:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 250 states have (on average 1.224) internal successors, (306), 253 states have internal predecessors, (306), 91 states have call successors, (91), 33 states have call predecessors, (91), 36 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2021-12-22 13:59:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 501 transitions. [2021-12-22 13:59:59,780 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 501 transitions. Word has length 159 [2021-12-22 13:59:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:59,781 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 501 transitions. [2021-12-22 13:59:59,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 501 transitions. [2021-12-22 13:59:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 13:59:59,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:59,783 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:59,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:59,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 13:59:59,991 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -146496733, now seen corresponding path program 1 times [2021-12-22 13:59:59,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:59,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827487958] [2021-12-22 13:59:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:59,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:00:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:00:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:00:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:00:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 14:00:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:00:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:00:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:00:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:00:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:00:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:00:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:00:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:00:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:00:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 14:00:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:00:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:00:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:00:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:00:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:00:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 14:00:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:00:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:00:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:00:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:00:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:00:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-22 14:00:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-22 14:00:00,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827487958] [2021-12-22 14:00:00,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827487958] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:00:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454492709] [2021-12-22 14:00:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:00,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:00,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:00,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:00,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 14:00:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:01,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 14:00:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-22 14:00:01,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:01,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454492709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:01,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:00:01,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2021-12-22 14:00:01,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022244483] [2021-12-22 14:00:01,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:01,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:00:01,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:00:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-22 14:00:01,389 INFO L87 Difference]: Start difference. First operand 378 states and 501 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:00:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:01,511 INFO L93 Difference]: Finished difference Result 706 states and 944 transitions. [2021-12-22 14:00:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:00:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 170 [2021-12-22 14:00:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:01,514 INFO L225 Difference]: With dead ends: 706 [2021-12-22 14:00:01,514 INFO L226 Difference]: Without dead ends: 378 [2021-12-22 14:00:01,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-22 14:00:01,515 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:01,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1727 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:00:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-22 14:00:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 373. [2021-12-22 14:00:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 246 states have (on average 1.2195121951219512) internal successors, (300), 249 states have internal predecessors, (300), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (103), 90 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-22 14:00:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 494 transitions. [2021-12-22 14:00:01,530 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 494 transitions. Word has length 170 [2021-12-22 14:00:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:01,531 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 494 transitions. [2021-12-22 14:00:01,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:00:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 494 transitions. [2021-12-22 14:00:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-22 14:00:01,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:01,533 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:01,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:01,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-22 14:00:01,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2001250165, now seen corresponding path program 1 times [2021-12-22 14:00:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718224793] [2021-12-22 14:00:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:01,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:01,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:01,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084163925] [2021-12-22 14:00:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:01,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:01,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:01,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:01,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 14:00:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:02,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-22 14:00:02,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:02,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:02,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 14:00:04,003 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3155 Int) (v_ArrVal_3154 Int) (v_ArrVal_3151 Int) (v_ArrVal_3152 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base|) (+ 8 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3154) (+ 16 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3151) (+ |c_s_get_next_element_#in~iter.offset| 24) v_ArrVal_3152) (+ 40 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3155)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-22 14:00:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:04,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-22 14:00:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-22 14:00:04,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:04,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718224793] [2021-12-22 14:00:04,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084163925] [2021-12-22 14:00:04,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084163925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:04,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:04,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 14:00:04,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462314409] [2021-12-22 14:00:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:04,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 14:00:04,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 14:00:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=150, Unknown=1, NotChecked=24, Total=210 [2021-12-22 14:00:04,125 INFO L87 Difference]: Start difference. First operand 373 states and 494 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-22 14:00:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:17,882 INFO L93 Difference]: Finished difference Result 675 states and 897 transitions. [2021-12-22 14:00:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 14:00:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 176 [2021-12-22 14:00:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:17,885 INFO L225 Difference]: With dead ends: 675 [2021-12-22 14:00:17,885 INFO L226 Difference]: Without dead ends: 429 [2021-12-22 14:00:17,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=101, Invalid=493, Unknown=10, NotChecked=46, Total=650 [2021-12-22 14:00:17,886 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 274 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:17,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 1861 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 996 Invalid, 0 Unknown, 1083 Unchecked, 0.7s Time] [2021-12-22 14:00:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-22 14:00:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 401. [2021-12-22 14:00:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 265 states have (on average 1.211320754716981) internal successors, (321), 269 states have internal predecessors, (321), 94 states have call successors, (94), 38 states have call predecessors, (94), 41 states have return successors, (107), 93 states have call predecessors, (107), 93 states have call successors, (107) [2021-12-22 14:00:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 522 transitions. [2021-12-22 14:00:17,902 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 522 transitions. Word has length 176 [2021-12-22 14:00:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:17,903 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 522 transitions. [2021-12-22 14:00:17,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-22 14:00:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 522 transitions. [2021-12-22 14:00:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-22 14:00:17,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:17,904 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:17,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:18,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 14:00:18,123 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -897728049, now seen corresponding path program 1 times [2021-12-22 14:00:18,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987160285] [2021-12-22 14:00:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:18,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:18,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:18,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123011124] [2021-12-22 14:00:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:18,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:18,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:18,175 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:18,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 14:00:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-22 14:00:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:18,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 14:00:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:18,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 14:00:19,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 14:00:19,598 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 14:00:19,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2021-12-22 14:00:19,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:19,647 INFO L353 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-22 14:00:19,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2021-12-22 14:00:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 14:00:20,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:00:22,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:22,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987160285] [2021-12-22 14:00:22,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123011124] [2021-12-22 14:00:22,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123011124] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:00:22,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:00:22,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-22 14:00:22,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279151530] [2021-12-22 14:00:22,585 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-22 14:00:22,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 14:00:22,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 14:00:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2021-12-22 14:00:22,587 INFO L87 Difference]: Start difference. First operand 401 states and 522 transitions. Second operand has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-22 14:00:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:23,437 INFO L93 Difference]: Finished difference Result 668 states and 891 transitions. [2021-12-22 14:00:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-22 14:00:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 181 [2021-12-22 14:00:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:23,440 INFO L225 Difference]: With dead ends: 668 [2021-12-22 14:00:23,440 INFO L226 Difference]: Without dead ends: 423 [2021-12-22 14:00:23,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-12-22 14:00:23,441 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 495 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:23,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 3110 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 391 Invalid, 0 Unknown, 333 Unchecked, 0.7s Time] [2021-12-22 14:00:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-22 14:00:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2021-12-22 14:00:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 276 states have (on average 1.2065217391304348) internal successors, (333), 280 states have internal predecessors, (333), 95 states have call successors, (95), 40 states have call predecessors, (95), 44 states have return successors, (109), 95 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-22 14:00:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 537 transitions. [2021-12-22 14:00:23,456 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 537 transitions. Word has length 181 [2021-12-22 14:00:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:23,456 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 537 transitions. [2021-12-22 14:00:23,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-22 14:00:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 537 transitions. [2021-12-22 14:00:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-22 14:00:23,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:23,458 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:23,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:23,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-22 14:00:23,671 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1484534063, now seen corresponding path program 1 times [2021-12-22 14:00:23,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:23,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548867872] [2021-12-22 14:00:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:23,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:23,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:23,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409271398] [2021-12-22 14:00:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:23,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:23,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:23,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:23,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 14:00:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 14:00:24,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:25,355 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2021-12-22 14:00:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-22 14:00:30,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:30,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548867872] [2021-12-22 14:00:30,358 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409271398] [2021-12-22 14:00:30,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409271398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:30,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:30,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:00:30,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553791164] [2021-12-22 14:00:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:30,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:00:30,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:00:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-22 14:00:30,360 INFO L87 Difference]: Start difference. First operand 416 states and 537 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:00:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:30,470 INFO L93 Difference]: Finished difference Result 676 states and 908 transitions. [2021-12-22 14:00:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:00:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 181 [2021-12-22 14:00:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:30,473 INFO L225 Difference]: With dead ends: 676 [2021-12-22 14:00:30,473 INFO L226 Difference]: Without dead ends: 417 [2021-12-22 14:00:30,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-22 14:00:30,474 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 0 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:30,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1741 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 499 Unchecked, 0.1s Time] [2021-12-22 14:00:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-22 14:00:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2021-12-22 14:00:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 274 states have (on average 1.2007299270072993) internal successors, (329), 277 states have internal predecessors, (329), 95 states have call successors, (95), 40 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 94 states have call successors, (108) [2021-12-22 14:00:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 532 transitions. [2021-12-22 14:00:30,520 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 532 transitions. Word has length 181 [2021-12-22 14:00:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:30,521 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 532 transitions. [2021-12-22 14:00:30,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:00:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 532 transitions. [2021-12-22 14:00:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-22 14:00:30,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:30,523 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:30,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:30,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-22 14:00:30,735 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash -510431116, now seen corresponding path program 1 times [2021-12-22 14:00:30,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489149419] [2021-12-22 14:00:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:30,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:30,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:30,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807267862] [2021-12-22 14:00:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:30,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:30,794 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:30,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 14:00:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:31,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-22 14:00:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:31,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:31,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 14:00:31,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:31,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 14:00:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,363 INFO L353 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-22 14:00:32,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2021-12-22 14:00:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:00:32,376 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 14:00:32,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2021-12-22 14:00:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 14:00:33,161 INFO L328 TraceCheckSpWp]: Computing backward predicates...