./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_find_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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:09:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:09:41,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:09:41,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:09:41,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:09:41,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:09:41,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:09:41,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:09:41,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:09:41,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:09:41,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:09:41,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:09:41,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:09:41,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:09:41,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:09:41,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:09:41,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:09:41,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:09:41,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:09:41,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:09:41,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:09:41,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:09:41,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:09:41,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:09:41,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:09:41,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:09:41,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:09:41,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:09:41,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:09:41,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:09:41,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:09:41,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:09:41,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:09:41,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:09:41,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:09:41,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:09:41,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:09:41,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:09:41,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:09:41,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:09:41,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:09:41,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:09:41,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:09:41,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:09:41,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:09:41,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:09:41,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:09:41,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:09:41,726 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:09:41,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:09:41,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:09:41,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:09:41,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:09:41,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:09:41,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:09:41,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:09:41,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:09:41,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:09:41,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:09:41,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:09:41,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:09:41,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-03 23:09:41,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:09:41,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:09:41,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:09:41,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:09:41,973 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:09:41,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-03 23:09:42,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4af9caa/847bc61eb9344dcaa16b0b1a69b08ea7/FLAG6e3d7f7f7 [2021-11-03 23:09:42,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:09:42,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-03 23:09:42,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4af9caa/847bc61eb9344dcaa16b0b1a69b08ea7/FLAG6e3d7f7f7 [2021-11-03 23:09:43,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4af9caa/847bc61eb9344dcaa16b0b1a69b08ea7 [2021-11-03 23:09:43,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:09:43,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:09:43,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:09:43,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:09:43,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:09:43,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:09:43" (1/1) ... [2021-11-03 23:09:43,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6374e540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:43, skipping insertion in model container [2021-11-03 23:09:43,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:09:43" (1/1) ... [2021-11-03 23:09:43,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:09:43,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:09:43,441 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-03 23:09:43,454 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-03 23:09:43,481 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:09:43,488 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:09:44,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:09:44,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:09:44,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:09:44,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:09:44,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:09:44,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:09:44,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:09:44,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:09:44,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:09:44,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:09:44,588 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:09:44,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:09:44,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:09:44,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-03 23:09:44,943 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-03 23:09:44,944 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:09:44,944 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:09:44,993 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:44,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,005 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:09:45,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:09:45,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:09:45,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:09:45,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:09:45,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:09:45,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:09:45,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:09:45,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:09:45,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:09:45,053 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:09:45,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,134 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,134 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:09:45,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:09:45,349 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:09:45,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45 WrapperNode [2021-11-03 23:09:45,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:09:45,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:09:45,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:09:45,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:09:45,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:09:45,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:09:45,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:09:45,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:09:45,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:09:45,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:09:45,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:09:45,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:09:45,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (1/1) ... [2021-11-03 23:09:45,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:09:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:09:45,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 23:09:45,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 23:09:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 23:09:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:09:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:09:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:09:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:09:45,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:09:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-03 23:09:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:09:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:09:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:09:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:09:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:09:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:09:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:09:49,902 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !true; [2021-11-03 23:09:49,902 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !true; [2021-11-03 23:09:49,902 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##185: assume !true; [2021-11-03 23:09:49,902 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##132: assume !true; [2021-11-03 23:09:49,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:09:49,914 INFO L299 CfgBuilder]: Removed 289 assume(true) statements. [2021-11-03 23:09:49,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:09:49 BoogieIcfgContainer [2021-11-03 23:09:49,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:09:49,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:09:49,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:09:49,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:09:49,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:09:43" (1/3) ... [2021-11-03 23:09:49,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75507df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:09:49, skipping insertion in model container [2021-11-03 23:09:49,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:09:45" (2/3) ... [2021-11-03 23:09:49,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75507df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:09:49, skipping insertion in model container [2021-11-03 23:09:49,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:09:49" (3/3) ... [2021-11-03 23:09:49,927 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-03 23:09:49,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:09:49,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-03 23:09:49,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:09:49,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 23:09:49,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-03 23:09:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 285 states have (on average 1.4280701754385965) internal successors, (407), 303 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:09:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 23:09:50,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:09:50,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:09:50,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:09:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:09:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -468143570, now seen corresponding path program 1 times [2021-11-03 23:09:50,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:09:50,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825834541] [2021-11-03 23:09:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:09:50,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:09:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:09:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:09:50,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:09:50,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825834541] [2021-11-03 23:09:50,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825834541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:09:50,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:09:50,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:09:50,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675470663] [2021-11-03 23:09:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:09:50,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:09:50,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:09:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:09:50,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:09:50,660 INFO L87 Difference]: Start difference. First operand has 304 states, 285 states have (on average 1.4280701754385965) internal successors, (407), 303 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:09:52,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:09:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:09:54,461 INFO L93 Difference]: Finished difference Result 603 states and 808 transitions. [2021-11-03 23:09:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:09:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 23:09:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:09:54,472 INFO L225 Difference]: With dead ends: 603 [2021-11-03 23:09:54,472 INFO L226 Difference]: Without dead ends: 297 [2021-11-03 23:09:54,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:09:54,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3345.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3703.87ms IncrementalHoareTripleChecker+Time [2021-11-03 23:09:54,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 356 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [0 Valid, 355 Invalid, 1 Unknown, 0 Unchecked, 3703.87ms Time] [2021-11-03 23:09:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-03 23:09:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-03 23:09:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 279 states have (on average 1.2544802867383513) internal successors, (350), 296 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:09:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 350 transitions. [2021-11-03 23:09:54,521 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 350 transitions. Word has length 72 [2021-11-03 23:09:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:09:54,521 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 350 transitions. [2021-11-03 23:09:54,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:09:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 350 transitions. [2021-11-03 23:09:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 23:09:54,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:09:54,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:09:54,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:09:54,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:09:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:09:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1429628202, now seen corresponding path program 1 times [2021-11-03 23:09:54,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:09:54,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947031853] [2021-11-03 23:09:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:09:54,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:09:54,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:09:54,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395528900] [2021-11-03 23:09:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:09:54,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:09:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:09:54,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:09:54,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:09:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:09:55,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:09:55,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:09:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:09:55,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:09:55,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:09:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947031853] [2021-11-03 23:09:55,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:09:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395528900] [2021-11-03 23:09:55,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395528900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:09:55,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:09:55,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:09:55,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608200885] [2021-11-03 23:09:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:09:55,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:09:55,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:09:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:09:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:09:55,761 INFO L87 Difference]: Start difference. First operand 297 states and 350 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:09:57,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:04,815 INFO L93 Difference]: Finished difference Result 853 states and 1006 transitions. [2021-11-03 23:10:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:10:04,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 23:10:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:04,818 INFO L225 Difference]: With dead ends: 853 [2021-11-03 23:10:04,818 INFO L226 Difference]: Without dead ends: 578 [2021-11-03 23:10:04,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.58ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:10:04,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 652 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8081.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.34ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8810.07ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:04,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 0 Invalid, 2017 Unknown, 0 Unchecked, 34.34ms Time], IncrementalHoareTripleChecker [8 Valid, 2008 Invalid, 1 Unknown, 0 Unchecked, 8810.07ms Time] [2021-11-03 23:10:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-03 23:10:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 303. [2021-11-03 23:10:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.249122807017544) internal successors, (356), 302 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 356 transitions. [2021-11-03 23:10:04,845 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 356 transitions. Word has length 72 [2021-11-03 23:10:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:04,845 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 356 transitions. [2021-11-03 23:10:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 356 transitions. [2021-11-03 23:10:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 23:10:04,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:04,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:04,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:10:05,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:10:05,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 874876930, now seen corresponding path program 1 times [2021-11-03 23:10:05,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:05,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341139692] [2021-11-03 23:10:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:05,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:05,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:05,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341139692] [2021-11-03 23:10:05,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341139692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:05,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:05,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:10:05,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235110912] [2021-11-03 23:10:05,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:05,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:10:05,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:10:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:10:05,592 INFO L87 Difference]: Start difference. First operand 303 states and 356 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:07,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:13,656 INFO L93 Difference]: Finished difference Result 574 states and 675 transitions. [2021-11-03 23:10:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:10:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 23:10:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:13,659 INFO L225 Difference]: With dead ends: 574 [2021-11-03 23:10:13,659 INFO L226 Difference]: Without dead ends: 309 [2021-11-03 23:10:13,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 522.23ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-03 23:10:13,660 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 405 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7031.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.30ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7601.23ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:13,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 0 Invalid, 1729 Unknown, 0 Unchecked, 29.30ms Time], IncrementalHoareTripleChecker [9 Valid, 1719 Invalid, 1 Unknown, 0 Unchecked, 7601.23ms Time] [2021-11-03 23:10:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-03 23:10:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2021-11-03 23:10:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 287 states have (on average 1.2473867595818815) internal successors, (358), 304 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 358 transitions. [2021-11-03 23:10:13,682 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 358 transitions. Word has length 76 [2021-11-03 23:10:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:13,683 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 358 transitions. [2021-11-03 23:10:13,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 358 transitions. [2021-11-03 23:10:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 23:10:13,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:13,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:13,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:10:13,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1750895936, now seen corresponding path program 1 times [2021-11-03 23:10:13,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:13,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192862996] [2021-11-03 23:10:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:13,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:13,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:13,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192862996] [2021-11-03 23:10:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192862996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:10:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332095507] [2021-11-03 23:10:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:10:13,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:10:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:10:13,949 INFO L87 Difference]: Start difference. First operand 305 states and 358 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:15,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:18,367 INFO L93 Difference]: Finished difference Result 573 states and 673 transitions. [2021-11-03 23:10:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:10:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 23:10:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:18,369 INFO L225 Difference]: With dead ends: 573 [2021-11-03 23:10:18,369 INFO L226 Difference]: Without dead ends: 303 [2021-11-03 23:10:18,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.08ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:10:18,370 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3969.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4357.63ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:18,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [10 Valid, 684 Invalid, 1 Unknown, 0 Unchecked, 4357.63ms Time] [2021-11-03 23:10:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-03 23:10:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-03 23:10:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.231578947368421) internal successors, (351), 302 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 351 transitions. [2021-11-03 23:10:18,377 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 351 transitions. Word has length 76 [2021-11-03 23:10:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:18,377 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 351 transitions. [2021-11-03 23:10:18,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 351 transitions. [2021-11-03 23:10:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 23:10:18,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:18,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:18,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:10:18,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash -136947257, now seen corresponding path program 1 times [2021-11-03 23:10:18,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:18,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723334246] [2021-11-03 23:10:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:18,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:18,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:18,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723334246] [2021-11-03 23:10:18,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723334246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:18,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:18,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:10:18,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643490216] [2021-11-03 23:10:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:18,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:10:18,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:10:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:10:18,678 INFO L87 Difference]: Start difference. First operand 303 states and 351 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:20,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:25,635 INFO L93 Difference]: Finished difference Result 759 states and 877 transitions. [2021-11-03 23:10:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:10:25,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-03 23:10:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:25,637 INFO L225 Difference]: With dead ends: 759 [2021-11-03 23:10:25,637 INFO L226 Difference]: Without dead ends: 493 [2021-11-03 23:10:25,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 262.01ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:10:25,638 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 329 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6175.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.07ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6699.44ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:25,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 0 Invalid, 1868 Unknown, 0 Unchecked, 11.07ms Time], IncrementalHoareTripleChecker [30 Valid, 1837 Invalid, 1 Unknown, 0 Unchecked, 6699.44ms Time] [2021-11-03 23:10:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-03 23:10:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 303. [2021-11-03 23:10:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2140350877192982) internal successors, (346), 302 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 346 transitions. [2021-11-03 23:10:25,649 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 346 transitions. Word has length 78 [2021-11-03 23:10:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:25,649 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 346 transitions. [2021-11-03 23:10:25,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 346 transitions. [2021-11-03 23:10:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 23:10:25,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:25,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:25,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 23:10:25,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -505310154, now seen corresponding path program 1 times [2021-11-03 23:10:25,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:25,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703850972] [2021-11-03 23:10:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:25,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:26,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:26,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703850972] [2021-11-03 23:10:26,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703850972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:26,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:26,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:10:26,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089215995] [2021-11-03 23:10:26,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:26,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:10:26,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:26,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:10:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:10:26,077 INFO L87 Difference]: Start difference. First operand 303 states and 346 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:28,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:31,174 INFO L93 Difference]: Finished difference Result 587 states and 675 transitions. [2021-11-03 23:10:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:10:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 23:10:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:31,176 INFO L225 Difference]: With dead ends: 587 [2021-11-03 23:10:31,176 INFO L226 Difference]: Without dead ends: 383 [2021-11-03 23:10:31,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:10:31,177 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4551.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5012.24ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:31,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 1188 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [8 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 5012.24ms Time] [2021-11-03 23:10:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-03 23:10:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 303. [2021-11-03 23:10:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2035087719298245) internal successors, (343), 302 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 343 transitions. [2021-11-03 23:10:31,185 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 343 transitions. Word has length 79 [2021-11-03 23:10:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:31,185 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 343 transitions. [2021-11-03 23:10:31,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 343 transitions. [2021-11-03 23:10:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 23:10:31,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:31,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:31,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 23:10:31,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1214273725, now seen corresponding path program 1 times [2021-11-03 23:10:31,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:31,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107303545] [2021-11-03 23:10:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:31,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:31,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:31,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107303545] [2021-11-03 23:10:31,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107303545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:31,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:31,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:10:31,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562372507] [2021-11-03 23:10:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:10:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:10:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:10:31,705 INFO L87 Difference]: Start difference. First operand 303 states and 343 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:33,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:39,081 INFO L93 Difference]: Finished difference Result 702 states and 795 transitions. [2021-11-03 23:10:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 23:10:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 23:10:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:39,083 INFO L225 Difference]: With dead ends: 702 [2021-11-03 23:10:39,083 INFO L226 Difference]: Without dead ends: 494 [2021-11-03 23:10:39,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 566.14ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-03 23:10:39,084 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 647 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6255.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.88ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6843.16ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:39,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 0 Invalid, 1709 Unknown, 0 Unchecked, 23.88ms Time], IncrementalHoareTripleChecker [13 Valid, 1695 Invalid, 1 Unknown, 0 Unchecked, 6843.16ms Time] [2021-11-03 23:10:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-03 23:10:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 303. [2021-11-03 23:10:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2) internal successors, (342), 302 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 342 transitions. [2021-11-03 23:10:39,095 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 342 transitions. Word has length 80 [2021-11-03 23:10:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:39,096 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 342 transitions. [2021-11-03 23:10:39,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 342 transitions. [2021-11-03 23:10:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 23:10:39,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:39,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:39,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 23:10:39,098 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash -708297866, now seen corresponding path program 1 times [2021-11-03 23:10:39,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:39,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160038984] [2021-11-03 23:10:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:39,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:39,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:39,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160038984] [2021-11-03 23:10:39,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160038984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:39,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:39,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:10:39,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118304154] [2021-11-03 23:10:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:39,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:10:39,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:10:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:10:39,687 INFO L87 Difference]: Start difference. First operand 303 states and 342 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:41,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:49,693 INFO L93 Difference]: Finished difference Result 612 states and 693 transitions. [2021-11-03 23:10:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 23:10:49,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 23:10:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:49,695 INFO L225 Difference]: With dead ends: 612 [2021-11-03 23:10:49,695 INFO L226 Difference]: Without dead ends: 392 [2021-11-03 23:10:49,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 827.54ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-03 23:10:49,696 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 450 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8373.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.34ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9263.23ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:49,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 0 Invalid, 2099 Unknown, 0 Unchecked, 20.34ms Time], IncrementalHoareTripleChecker [19 Valid, 2079 Invalid, 1 Unknown, 0 Unchecked, 9263.23ms Time] [2021-11-03 23:10:49,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-03 23:10:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 303. [2021-11-03 23:10:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.1964912280701754) internal successors, (341), 302 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-03 23:10:49,706 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 83 [2021-11-03 23:10:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:49,706 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-03 23:10:49,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-03 23:10:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 23:10:49,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:49,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:49,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 23:10:49,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2107435938, now seen corresponding path program 1 times [2021-11-03 23:10:49,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:49,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315262026] [2021-11-03 23:10:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:49,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:50,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:50,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315262026] [2021-11-03 23:10:50,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315262026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:50,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:50,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:10:50,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030792170] [2021-11-03 23:10:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:50,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:10:50,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:10:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:10:50,126 INFO L87 Difference]: Start difference. First operand 303 states and 341 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:52,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:10:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:10:54,872 INFO L93 Difference]: Finished difference Result 303 states and 341 transitions. [2021-11-03 23:10:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:10:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 23:10:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:10:54,874 INFO L225 Difference]: With dead ends: 303 [2021-11-03 23:10:54,874 INFO L226 Difference]: Without dead ends: 301 [2021-11-03 23:10:54,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:10:54,875 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4201.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4696.98ms IncrementalHoareTripleChecker+Time [2021-11-03 23:10:54,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [0 Valid, 656 Invalid, 1 Unknown, 0 Unchecked, 4696.98ms Time] [2021-11-03 23:10:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-03 23:10:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-11-03 23:10:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 284 states have (on average 1.193661971830986) internal successors, (339), 300 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 339 transitions. [2021-11-03 23:10:54,887 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 339 transitions. Word has length 86 [2021-11-03 23:10:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:10:54,888 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 339 transitions. [2021-11-03 23:10:54,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 339 transitions. [2021-11-03 23:10:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 23:10:54,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:10:54,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:10:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 23:10:54,890 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:10:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:10:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1620676935, now seen corresponding path program 1 times [2021-11-03 23:10:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:10:54,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977151483] [2021-11-03 23:10:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:10:54,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:10:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:10:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:10:55,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:10:55,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977151483] [2021-11-03 23:10:55,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977151483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:10:55,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:10:55,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:10:55,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830901713] [2021-11-03 23:10:55,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:10:55,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:10:55,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:10:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:10:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:10:55,479 INFO L87 Difference]: Start difference. First operand 301 states and 339 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:10:57,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:11:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:11:03,015 INFO L93 Difference]: Finished difference Result 530 states and 610 transitions. [2021-11-03 23:11:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:11:03,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 23:11:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:11:03,017 INFO L225 Difference]: With dead ends: 530 [2021-11-03 23:11:03,017 INFO L226 Difference]: Without dead ends: 528 [2021-11-03 23:11:03,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:11:03,018 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6662.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7412.36ms IncrementalHoareTripleChecker+Time [2021-11-03 23:11:03,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 1393 Unknown, 0 Unchecked, 9.26ms Time], IncrementalHoareTripleChecker [2 Valid, 1390 Invalid, 1 Unknown, 0 Unchecked, 7412.36ms Time] [2021-11-03 23:11:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-03 23:11:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 303. [2021-11-03 23:11:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 286 states have (on average 1.1923076923076923) internal successors, (341), 302 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-03 23:11:03,028 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 93 [2021-11-03 23:11:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:11:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-03 23:11:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-03 23:11:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 23:11:03,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:11:03,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:11:03,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 23:11:03,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:11:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:11:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1620736517, now seen corresponding path program 1 times [2021-11-03 23:11:03,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:11:03,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060835949] [2021-11-03 23:11:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:11:03,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:11:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:11:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:11:03,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:11:03,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060835949] [2021-11-03 23:11:03,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060835949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:11:03,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:11:03,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:11:03,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978000796] [2021-11-03 23:11:03,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:11:03,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:11:03,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:11:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:11:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:11:03,363 INFO L87 Difference]: Start difference. First operand 303 states and 341 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:05,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:11:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:11:10,869 INFO L93 Difference]: Finished difference Result 527 states and 607 transitions. [2021-11-03 23:11:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:11:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 23:11:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:11:10,872 INFO L225 Difference]: With dead ends: 527 [2021-11-03 23:11:10,872 INFO L226 Difference]: Without dead ends: 525 [2021-11-03 23:11:10,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:11:10,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6632.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7366.38ms IncrementalHoareTripleChecker+Time [2021-11-03 23:11:10,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 1381 Unknown, 0 Unchecked, 10.47ms Time], IncrementalHoareTripleChecker [3 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 7366.38ms Time] [2021-11-03 23:11:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-03 23:11:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 299. [2021-11-03 23:11:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.1908127208480566) internal successors, (337), 298 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2021-11-03 23:11:10,912 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 93 [2021-11-03 23:11:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:11:10,912 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 337 transitions. [2021-11-03 23:11:10,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 337 transitions. [2021-11-03 23:11:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 23:11:10,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:11:10,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:11:10,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 23:11:10,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:11:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:11:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1609934162, now seen corresponding path program 1 times [2021-11-03 23:11:10,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:11:10,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244109725] [2021-11-03 23:11:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:11:10,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:11:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:11:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:11:11,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:11:11,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244109725] [2021-11-03 23:11:11,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244109725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:11:11,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:11:11,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:11:11,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302377648] [2021-11-03 23:11:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:11:11,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:11:11,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:11:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:11:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:11:11,436 INFO L87 Difference]: Start difference. First operand 299 states and 337 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:13,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:11:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:11:20,860 INFO L93 Difference]: Finished difference Result 697 states and 796 transitions. [2021-11-03 23:11:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:11:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 23:11:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:11:20,862 INFO L225 Difference]: With dead ends: 697 [2021-11-03 23:11:20,862 INFO L226 Difference]: Without dead ends: 526 [2021-11-03 23:11:20,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 475.27ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:11:20,863 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 943 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8025.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9001.96ms IncrementalHoareTripleChecker+Time [2021-11-03 23:11:20,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 0 Invalid, 1852 Unknown, 0 Unchecked, 21.85ms Time], IncrementalHoareTripleChecker [0 Valid, 1851 Invalid, 1 Unknown, 0 Unchecked, 9001.96ms Time] [2021-11-03 23:11:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-03 23:11:20,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 309. [2021-11-03 23:11:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 293 states have (on average 1.1945392491467577) internal successors, (350), 308 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 350 transitions. [2021-11-03 23:11:20,879 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 350 transitions. Word has length 97 [2021-11-03 23:11:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:11:20,879 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 350 transitions. [2021-11-03 23:11:20,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 350 transitions. [2021-11-03 23:11:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 23:11:20,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:11:20,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:11:20,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 23:11:20,883 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:11:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:11:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1620792263, now seen corresponding path program 1 times [2021-11-03 23:11:20,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:11:20,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331851138] [2021-11-03 23:11:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:11:20,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:11:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:11:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:11:21,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:11:21,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331851138] [2021-11-03 23:11:21,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331851138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:11:21,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:11:21,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:11:21,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069560643] [2021-11-03 23:11:21,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:11:21,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:11:21,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:11:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:11:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:11:21,146 INFO L87 Difference]: Start difference. First operand 309 states and 350 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:23,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:11:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:11:25,195 INFO L93 Difference]: Finished difference Result 373 states and 421 transitions. [2021-11-03 23:11:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:11:25,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 23:11:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:11:25,198 INFO L225 Difference]: With dead ends: 373 [2021-11-03 23:11:25,198 INFO L226 Difference]: Without dead ends: 309 [2021-11-03 23:11:25,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:11:25,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3574.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3997.69ms IncrementalHoareTripleChecker+Time [2021-11-03 23:11:25,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 1 Unknown, 0 Unchecked, 3997.69ms Time] [2021-11-03 23:11:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-03 23:11:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-03 23:11:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 293 states have (on average 1.1877133105802047) internal successors, (348), 308 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 348 transitions. [2021-11-03 23:11:25,213 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 348 transitions. Word has length 98 [2021-11-03 23:11:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:11:25,213 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 348 transitions. [2021-11-03 23:11:25,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 348 transitions. [2021-11-03 23:11:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 23:11:25,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:11:25,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:11:25,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 23:11:25,215 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:11:25,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:11:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1362626825, now seen corresponding path program 1 times [2021-11-03 23:11:25,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:11:25,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807819327] [2021-11-03 23:11:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:11:25,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:11:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:11:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:11:25,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:11:25,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807819327] [2021-11-03 23:11:25,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807819327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:11:25,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:11:25,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:11:25,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987340668] [2021-11-03 23:11:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:11:25,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:11:25,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:11:25,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:11:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:11:25,527 INFO L87 Difference]: Start difference. First operand 309 states and 348 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:28,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:11:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:11:31,857 INFO L93 Difference]: Finished difference Result 431 states and 483 transitions. [2021-11-03 23:11:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:11:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 23:11:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:11:31,858 INFO L225 Difference]: With dead ends: 431 [2021-11-03 23:11:31,858 INFO L226 Difference]: Without dead ends: 371 [2021-11-03 23:11:31,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:11:31,859 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5514.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6239.58ms IncrementalHoareTripleChecker+Time [2021-11-03 23:11:31,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 984 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [0 Valid, 983 Invalid, 1 Unknown, 0 Unchecked, 6239.58ms Time] [2021-11-03 23:11:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-03 23:11:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 311. [2021-11-03 23:11:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 295 states have (on average 1.1864406779661016) internal successors, (350), 310 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 350 transitions. [2021-11-03 23:11:31,872 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 350 transitions. Word has length 98 [2021-11-03 23:11:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:11:31,873 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 350 transitions. [2021-11-03 23:11:31,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 350 transitions. [2021-11-03 23:11:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 23:11:31,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:11:31,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:11:31,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 23:11:31,874 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:11:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:11:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash -682568455, now seen corresponding path program 1 times [2021-11-03 23:11:31,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:11:31,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565207142] [2021-11-03 23:11:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:11:31,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:11:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:11:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:11:36,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:11:36,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565207142] [2021-11-03 23:11:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565207142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:11:36,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:11:36,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-03 23:11:36,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887391293] [2021-11-03 23:11:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:11:36,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 23:11:36,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:11:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 23:11:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:11:36,348 INFO L87 Difference]: Start difference. First operand 311 states and 350 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:11:38,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:12:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:12:08,154 INFO L93 Difference]: Finished difference Result 636 states and 716 transitions. [2021-11-03 23:12:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 23:12:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 23:12:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:12:08,157 INFO L225 Difference]: With dead ends: 636 [2021-11-03 23:12:08,157 INFO L226 Difference]: Without dead ends: 583 [2021-11-03 23:12:08,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 9137.32ms TimeCoverageRelationStatistics Valid=481, Invalid=2275, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 23:12:08,158 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2710 mSDsluCounter, 4772 mSDsCounter, 0 mSdLazyCounter, 6407 mSolverCounterSat, 140 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22185.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.53ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 6407 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24472.97ms IncrementalHoareTripleChecker+Time [2021-11-03 23:12:08,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 0 Invalid, 6548 Unknown, 0 Unchecked, 80.53ms Time], IncrementalHoareTripleChecker [140 Valid, 6407 Invalid, 1 Unknown, 0 Unchecked, 24472.97ms Time] [2021-11-03 23:12:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-03 23:12:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 431. [2021-11-03 23:12:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.1879518072289157) internal successors, (493), 430 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 493 transitions. [2021-11-03 23:12:08,202 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 493 transitions. Word has length 98 [2021-11-03 23:12:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:12:08,202 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 493 transitions. [2021-11-03 23:12:08,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 493 transitions. [2021-11-03 23:12:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 23:12:08,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:12:08,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:12:08,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 23:12:08,204 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:12:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:12:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1092438907, now seen corresponding path program 1 times [2021-11-03 23:12:08,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:12:08,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615629681] [2021-11-03 23:12:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:08,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:12:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:12:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:12:08,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:12:08,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615629681] [2021-11-03 23:12:08,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615629681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:12:08,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:12:08,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:12:08,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143170598] [2021-11-03 23:12:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:12:08,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:12:08,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:12:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:12:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:12:08,569 INFO L87 Difference]: Start difference. First operand 431 states and 493 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:10,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:12:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:12:13,870 INFO L93 Difference]: Finished difference Result 489 states and 556 transitions. [2021-11-03 23:12:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:12:13,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 23:12:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:12:13,872 INFO L225 Difference]: With dead ends: 489 [2021-11-03 23:12:13,872 INFO L226 Difference]: Without dead ends: 431 [2021-11-03 23:12:13,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 258.38ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:12:13,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 833 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4440.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.29ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5070.80ms IncrementalHoareTripleChecker+Time [2021-11-03 23:12:13,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 0 Invalid, 757 Unknown, 0 Unchecked, 11.29ms Time], IncrementalHoareTripleChecker [17 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 5070.80ms Time] [2021-11-03 23:12:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-03 23:12:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-03 23:12:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.183132530120482) internal successors, (491), 430 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 491 transitions. [2021-11-03 23:12:13,894 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 491 transitions. Word has length 98 [2021-11-03 23:12:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:12:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 491 transitions. [2021-11-03 23:12:13,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 491 transitions. [2021-11-03 23:12:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 23:12:13,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:12:13,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:12:13,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 23:12:13,896 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:12:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:12:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -97700393, now seen corresponding path program 1 times [2021-11-03 23:12:13,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:12:13,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672945556] [2021-11-03 23:12:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:13,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:12:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:12:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:12:14,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:12:14,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672945556] [2021-11-03 23:12:14,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672945556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:12:14,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:12:14,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:12:14,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115171192] [2021-11-03 23:12:14,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:12:14,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:12:14,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:12:14,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:12:14,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:12:14,408 INFO L87 Difference]: Start difference. First operand 431 states and 491 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:17,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:12:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:12:25,114 INFO L93 Difference]: Finished difference Result 795 states and 911 transitions. [2021-11-03 23:12:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:12:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-03 23:12:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:12:25,116 INFO L225 Difference]: With dead ends: 795 [2021-11-03 23:12:25,116 INFO L226 Difference]: Without dead ends: 650 [2021-11-03 23:12:25,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 844.57ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-03 23:12:25,118 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1262 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8636.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.50ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9929.14ms IncrementalHoareTripleChecker+Time [2021-11-03 23:12:25,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 20.50ms Time], IncrementalHoareTripleChecker [15 Valid, 1799 Invalid, 1 Unknown, 0 Unchecked, 9929.14ms Time] [2021-11-03 23:12:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-11-03 23:12:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 431. [2021-11-03 23:12:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.1783132530120481) internal successors, (489), 430 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 489 transitions. [2021-11-03 23:12:25,144 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 489 transitions. Word has length 99 [2021-11-03 23:12:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:12:25,145 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 489 transitions. [2021-11-03 23:12:25,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 489 transitions. [2021-11-03 23:12:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 23:12:25,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:12:25,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:12:25,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 23:12:25,147 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:12:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:12:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1268040154, now seen corresponding path program 1 times [2021-11-03 23:12:25,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:12:25,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912030411] [2021-11-03 23:12:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:25,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:12:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:12:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:12:27,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:12:27,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912030411] [2021-11-03 23:12:27,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912030411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:12:27,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:12:27,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:12:27,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259809304] [2021-11-03 23:12:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:12:27,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:12:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:12:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:12:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:12:27,228 INFO L87 Difference]: Start difference. First operand 431 states and 489 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:29,867 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:12:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:12:33,723 INFO L93 Difference]: Finished difference Result 841 states and 953 transitions. [2021-11-03 23:12:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:12:33,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 23:12:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:12:33,725 INFO L225 Difference]: With dead ends: 841 [2021-11-03 23:12:33,725 INFO L226 Difference]: Without dead ends: 431 [2021-11-03 23:12:33,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:12:33,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5621.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.72ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6385.67ms IncrementalHoareTripleChecker+Time [2021-11-03 23:12:33,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 980 Unknown, 0 Unchecked, 4.72ms Time], IncrementalHoareTripleChecker [5 Valid, 974 Invalid, 1 Unknown, 0 Unchecked, 6385.67ms Time] [2021-11-03 23:12:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-03 23:12:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 428. [2021-11-03 23:12:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 412 states have (on average 1.1674757281553398) internal successors, (481), 427 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 481 transitions. [2021-11-03 23:12:33,761 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 481 transitions. Word has length 100 [2021-11-03 23:12:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:12:33,761 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 481 transitions. [2021-11-03 23:12:33,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 481 transitions. [2021-11-03 23:12:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 23:12:33,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:12:33,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:12:33,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 23:12:33,762 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:12:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:12:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1182457186, now seen corresponding path program 1 times [2021-11-03 23:12:33,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:12:33,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085135367] [2021-11-03 23:12:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:33,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:12:33,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:12:33,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774209622] [2021-11-03 23:12:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:33,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:12:33,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:12:33,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:12:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:12:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:12:36,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 201 conjunts are in the unsatisfiable core [2021-11-03 23:12:36,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:12:36,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 23:12:36,969 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-03 23:12:36,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-03 23:12:37,897 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-03 23:12:37,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-03 23:12:38,813 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-03 23:12:38,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-03 23:12:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:12:39,760 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-03 23:12:39,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-03 23:12:40,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-03 23:12:40,702 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-03 23:12:40,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 77 treesize of output 94 [2021-11-03 23:12:42,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 23:13:00,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 198 [2021-11-03 23:13:00,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:00,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:00,455 INFO L354 Elim1Store]: treesize reduction 232, result has 20.8 percent of original size [2021-11-03 23:13:00,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 289 treesize of output 243 [2021-11-03 23:13:00,780 INFO L354 Elim1Store]: treesize reduction 162, result has 25.0 percent of original size [2021-11-03 23:13:00,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 220 treesize of output 260 [2021-11-03 23:13:01,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:13:01,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 23:13:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 23:13:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:13:01,886 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:13:01,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 22 [2021-11-03 23:13:36,666 INFO L354 Elim1Store]: treesize reduction 76, result has 33.3 percent of original size [2021-11-03 23:13:36,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 120 [2021-11-03 23:14:53,862 INFO L354 Elim1Store]: treesize reduction 767, result has 17.1 percent of original size [2021-11-03 23:14:53,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 57 case distinctions, treesize of input 169 treesize of output 296 [2021-11-03 23:15:14,880 INFO L354 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2021-11-03 23:15:14,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 114 [2021-11-03 23:15:40,754 INFO L354 Elim1Store]: treesize reduction 298, result has 10.8 percent of original size [2021-11-03 23:15:40,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 131 treesize of output 147 [2021-11-03 23:15:57,042 INFO L354 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2021-11-03 23:15:57,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 122 treesize of output 124 [2021-11-03 23:16:31,576 INFO L354 Elim1Store]: treesize reduction 228, result has 17.1 percent of original size [2021-11-03 23:16:31,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 149 treesize of output 178 [2021-11-03 23:17:29,783 INFO L354 Elim1Store]: treesize reduction 232, result has 18.0 percent of original size [2021-11-03 23:17:29,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 141 treesize of output 174 [2021-11-03 23:17:49,730 INFO L354 Elim1Store]: treesize reduction 128, result has 43.1 percent of original size [2021-11-03 23:17:49,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 214 [2021-11-03 23:17:55,657 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 23:17:55,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 19 [2021-11-03 23:17:57,436 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 23:17:57,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-11-03 23:17:57,827 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2021-11-03 23:17:57,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-11-03 23:18:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:18:11,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:18:11,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:18:11,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085135367] [2021-11-03 23:18:11,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:18:11,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774209622] [2021-11-03 23:18:11,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774209622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:18:11,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:18:11,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-03 23:18:11,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590446586] [2021-11-03 23:18:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:18:11,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-03 23:18:11,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:18:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-03 23:18:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=737, Unknown=4, NotChecked=0, Total=812 [2021-11-03 23:18:11,171 INFO L87 Difference]: Start difference. First operand 428 states and 481 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:13,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:18:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:18:27,897 INFO L93 Difference]: Finished difference Result 773 states and 868 transitions. [2021-11-03 23:18:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 23:18:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 23:18:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:18:27,900 INFO L225 Difference]: With dead ends: 773 [2021-11-03 23:18:27,900 INFO L226 Difference]: Without dead ends: 720 [2021-11-03 23:18:27,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 29313.66ms TimeCoverageRelationStatistics Valid=148, Invalid=1250, Unknown=8, NotChecked=0, Total=1406 [2021-11-03 23:18:27,901 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 781 mSDsluCounter, 5978 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5932.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.62ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 6309 IncrementalHoareTripleChecker+Unchecked, 6819.94ms IncrementalHoareTripleChecker+Time [2021-11-03 23:18:27,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 0 Invalid, 7662 Unknown, 0 Unchecked, 24.62ms Time], IncrementalHoareTripleChecker [58 Valid, 1294 Invalid, 1 Unknown, 6309 Unchecked, 6819.94ms Time] [2021-11-03 23:18:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-11-03 23:18:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 528. [2021-11-03 23:18:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 512 states have (on average 1.158203125) internal successors, (593), 527 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 593 transitions. [2021-11-03 23:18:27,943 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 593 transitions. Word has length 104 [2021-11-03 23:18:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:18:27,944 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 593 transitions. [2021-11-03 23:18:27,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 593 transitions. [2021-11-03 23:18:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 23:18:27,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:18:27,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:18:27,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:18:28,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:28,159 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:18:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:18:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1503735098, now seen corresponding path program 1 times [2021-11-03 23:18:28,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:18:28,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859527103] [2021-11-03 23:18:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:28,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:18:28,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:18:28,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509827296] [2021-11-03 23:18:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:28,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:18:28,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:18:28,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:18:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:18:28,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 3088 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 23:18:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:18:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:18:29,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:18:29,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:18:29,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859527103] [2021-11-03 23:18:29,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:18:29,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509827296] [2021-11-03 23:18:29,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509827296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:18:29,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:18:29,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:18:29,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702724918] [2021-11-03 23:18:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:18:29,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:18:29,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:18:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:18:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:18:29,284 INFO L87 Difference]: Start difference. First operand 528 states and 593 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:31,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:18:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:18:38,962 INFO L93 Difference]: Finished difference Result 1066 states and 1190 transitions. [2021-11-03 23:18:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:18:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 23:18:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:18:38,965 INFO L225 Difference]: With dead ends: 1066 [2021-11-03 23:18:38,965 INFO L226 Difference]: Without dead ends: 643 [2021-11-03 23:18:38,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.41ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:18:38,966 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8521.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9475.58ms IncrementalHoareTripleChecker+Time [2021-11-03 23:18:38,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 2573 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [7 Valid, 2565 Invalid, 1 Unknown, 0 Unchecked, 9475.58ms Time] [2021-11-03 23:18:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-03 23:18:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 404. [2021-11-03 23:18:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 388 states have (on average 1.1469072164948453) internal successors, (445), 403 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 445 transitions. [2021-11-03 23:18:39,005 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 445 transitions. Word has length 106 [2021-11-03 23:18:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:18:39,005 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 445 transitions. [2021-11-03 23:18:39,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 445 transitions. [2021-11-03 23:18:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 23:18:39,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:18:39,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:18:39,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 23:18:39,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:39,219 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:18:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:18:39,220 INFO L85 PathProgramCache]: Analyzing trace with hash -816647518, now seen corresponding path program 1 times [2021-11-03 23:18:39,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:18:39,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725029504] [2021-11-03 23:18:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:39,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:18:39,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:18:39,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664552847] [2021-11-03 23:18:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:39,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:39,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:18:39,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:18:39,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:18:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:18:39,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3088 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 23:18:39,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:18:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:18:40,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:18:40,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:18:40,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725029504] [2021-11-03 23:18:40,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:18:40,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664552847] [2021-11-03 23:18:40,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664552847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:18:40,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:18:40,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:18:40,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759417162] [2021-11-03 23:18:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:18:40,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:18:40,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:18:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:18:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:18:40,255 INFO L87 Difference]: Start difference. First operand 404 states and 445 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:42,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:18:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:18:47,198 INFO L93 Difference]: Finished difference Result 648 states and 717 transitions. [2021-11-03 23:18:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:18:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 23:18:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:18:47,200 INFO L225 Difference]: With dead ends: 648 [2021-11-03 23:18:47,200 INFO L226 Difference]: Without dead ends: 357 [2021-11-03 23:18:47,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 138.10ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:18:47,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6060.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.38ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6798.01ms IncrementalHoareTripleChecker+Time [2021-11-03 23:18:47,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 1586 Unknown, 0 Unchecked, 5.38ms Time], IncrementalHoareTripleChecker [5 Valid, 1580 Invalid, 1 Unknown, 0 Unchecked, 6798.01ms Time] [2021-11-03 23:18:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-03 23:18:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-03 23:18:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 341 states have (on average 1.155425219941349) internal successors, (394), 356 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2021-11-03 23:18:47,224 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 106 [2021-11-03 23:18:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:18:47,224 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2021-11-03 23:18:47,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:18:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2021-11-03 23:18:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 23:18:47,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:18:47,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:18:47,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:18:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:47,441 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-03 23:18:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:18:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1911306815, now seen corresponding path program 1 times [2021-11-03 23:18:47,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:18:47,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178473141] [2021-11-03 23:18:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:47,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:18:47,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:18:47,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063520868] [2021-11-03 23:18:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:18:47,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:18:47,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:18:47,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:18:47,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15