./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:54:51,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:54:51,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:54:51,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:54:51,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:54:51,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:54:51,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:54:51,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:54:51,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:54:51,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:54:51,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:54:51,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:54:51,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:54:51,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:54:51,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:54:51,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:54:51,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:54:51,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:54:51,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:54:51,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:54:51,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:54:51,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:54:51,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:54:51,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:54:51,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:54:51,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:54:51,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:54:51,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:54:51,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:54:51,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:54:51,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:54:51,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:54:51,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:54:51,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:54:51,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:54:51,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:54:51,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:54:51,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:54:51,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:54:51,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:54:51,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:54:51,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:54:51,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:54:51,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:54:51,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:54:51,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:54:51,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:54:51,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:54:51,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:54:51,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:54:51,783 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:54:51,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:54:51,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:54:51,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:54:51,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:54:51,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:54:51,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:54:51,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:54:51,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:54:51,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:54:51,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:54:51,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:54:51,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:54:51,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:54:51,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:54:51,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:54:51,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:54:51,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-12-22 13:54:51,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:54:51,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:54:51,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:54:51,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:54:51,965 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:54:51,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-12-22 13:54:52,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f00cc806/360e7c275b8d45e48ab2c422c9b5143e/FLAG134899a38 [2021-12-22 13:54:52,557 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:54:52,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-12-22 13:54:52,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f00cc806/360e7c275b8d45e48ab2c422c9b5143e/FLAG134899a38 [2021-12-22 13:54:52,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f00cc806/360e7c275b8d45e48ab2c422c9b5143e [2021-12-22 13:54:52,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:54:52,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:54:52,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:54:52,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:54:53,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:54:53,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:54:52" (1/1) ... [2021-12-22 13:54:53,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bee912b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:53, skipping insertion in model container [2021-12-22 13:54:53,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:54:52" (1/1) ... [2021-12-22 13:54:53,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:54:53,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:54:53,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-12-22 13:54:53,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-12-22 13:54:53,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,748 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:53,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:54:53,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:54:53,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:54:53,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:54:53,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:54:53,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:54:53,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:54:53,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:54:53,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:54:53,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:54:54,026 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:54:54,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:54:54,194 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:54:54,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-12-22 13:54:54,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-12-22 13:54:54,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:54:54,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:54:54,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:54:54,335 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:54:54,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:54:54,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:54:54,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:54:54,337 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:54:54,337 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:54:54,337 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:54:54,374 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:54:54,384 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,445 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,445 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:54:54,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:54:54,607 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:54:54,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54 WrapperNode [2021-12-22 13:54:54,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:54:54,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:54:54,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:54:54,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:54:54,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,732 INFO L137 Inliner]: procedures = 691, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1065 [2021-12-22 13:54:54,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:54:54,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:54:54,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:54:54,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:54:54,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:54:54,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:54:54,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:54:54,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:54:54,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (1/1) ... [2021-12-22 13:54:54,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:54:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:54:54,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:54:54,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:54:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-22 13:54:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-22 13:54:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-22 13:54:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-22 13:54:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:54:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:54:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:54:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-22 13:54:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-22 13:54:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:54:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 13:54:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 13:54:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:54:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:54:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:54:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:54:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:54:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-22 13:54:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-22 13:54:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:54:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:54:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:54:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:54:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-22 13:54:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-22 13:54:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-22 13:54:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-22 13:54:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:54:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:54:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-22 13:54:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-22 13:54:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-22 13:54:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-22 13:54:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 13:54:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 13:54:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-22 13:54:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-22 13:54:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-12-22 13:54:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-12-22 13:54:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:54:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:54:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:54:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:54:55,196 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:54:55,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:54:55,983 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:54:55,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:54:55,989 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:54:55,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:54:55 BoogieIcfgContainer [2021-12-22 13:54:55,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:54:55,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:54:55,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:54:55,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:54:55,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:54:52" (1/3) ... [2021-12-22 13:54:55,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d07d6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:54:55, skipping insertion in model container [2021-12-22 13:54:55,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:54:54" (2/3) ... [2021-12-22 13:54:55,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d07d6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:54:55, skipping insertion in model container [2021-12-22 13:54:55,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:54:55" (3/3) ... [2021-12-22 13:54:55,996 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-12-22 13:54:56,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:54:56,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:54:56,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:54:56,047 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:54:56,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:54:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-22 13:54:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-22 13:54:56,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:54:56,074 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:54:56,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:54:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:54:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1072542744, now seen corresponding path program 1 times [2021-12-22 13:54:56,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:54:56,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109774345] [2021-12-22 13:54:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:56,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:54:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:54:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:54:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:54:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:54:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 13:54:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:54:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 13:54:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:54:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:54:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:54:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:54:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:54:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-22 13:54:56,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:54:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109774345] [2021-12-22 13:54:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109774345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:54:56,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:54:56,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:54:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090575354] [2021-12-22 13:54:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:54:56,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:54:56,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:54:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:54:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:54:56,577 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:54:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:54:56,828 INFO L93 Difference]: Finished difference Result 500 states and 722 transitions. [2021-12-22 13:54:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:54:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-12-22 13:54:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:54:56,838 INFO L225 Difference]: With dead ends: 500 [2021-12-22 13:54:56,838 INFO L226 Difference]: Without dead ends: 255 [2021-12-22 13:54:56,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:54:56,845 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 97 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:54:56,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 403 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:54:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-22 13:54:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2021-12-22 13:54:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-22 13:54:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2021-12-22 13:54:56,885 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2021-12-22 13:54:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:54:56,886 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2021-12-22 13:54:56,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:54:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2021-12-22 13:54:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 13:54:56,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:54:56,889 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:54:56,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:54:56,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:54:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:54:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2014404208, now seen corresponding path program 1 times [2021-12-22 13:54:56,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:54:56,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529049947] [2021-12-22 13:54:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:56,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:54:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:54:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:54:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:54:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:54:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 13:54:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:54:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 13:54:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:54:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:54:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:54:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:54:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:54:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-22 13:54:57,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:54:57,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529049947] [2021-12-22 13:54:57,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529049947] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:54:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241007510] [2021-12-22 13:54:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:57,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:54:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:54:57,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:54:57,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:54:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:57,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:54:57,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:54:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 13:54:57,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:54:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241007510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:54:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:54:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-22 13:54:57,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789712107] [2021-12-22 13:54:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:54:57,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:54:57,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:54:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:54:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:54:57,801 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-22 13:54:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:54:58,023 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2021-12-22 13:54:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:54:58,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2021-12-22 13:54:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:54:58,026 INFO L225 Difference]: With dead ends: 478 [2021-12-22 13:54:58,026 INFO L226 Difference]: Without dead ends: 246 [2021-12-22 13:54:58,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:54:58,027 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 371 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:54:58,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 965 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:54:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-22 13:54:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-22 13:54:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-22 13:54:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2021-12-22 13:54:58,045 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2021-12-22 13:54:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:54:58,045 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2021-12-22 13:54:58,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-22 13:54:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2021-12-22 13:54:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:54:58,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:54:58,047 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:54:58,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:54:58,281 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 [2021-12-22 13:54:58,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:54:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:54:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -756708827, now seen corresponding path program 1 times [2021-12-22 13:54:58,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:54:58,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703279782] [2021-12-22 13:54:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:58,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:54:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:54:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:54:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:54:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:54:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:54:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:54:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:54:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:54:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:54:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:54:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:54:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:54:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-22 13:54:58,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:54:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703279782] [2021-12-22 13:54:58,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703279782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:54:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532298208] [2021-12-22 13:54:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:58,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:54:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:54:58,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:54:58,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:54:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:58,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:54:58,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:54:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 13:54:59,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:54:59,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532298208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:54:59,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:54:59,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-12-22 13:54:59,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044173047] [2021-12-22 13:54:59,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:54:59,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:54:59,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:54:59,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:54:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:54:59,098 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:54:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:54:59,350 INFO L93 Difference]: Finished difference Result 469 states and 634 transitions. [2021-12-22 13:54:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:54:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2021-12-22 13:54:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:54:59,353 INFO L225 Difference]: With dead ends: 469 [2021-12-22 13:54:59,353 INFO L226 Difference]: Without dead ends: 243 [2021-12-22 13:54:59,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:54:59,354 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 429 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:54:59,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1136 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:54:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-22 13:54:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-12-22 13:54:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 153 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-22 13:54:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2021-12-22 13:54:59,370 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 91 [2021-12-22 13:54:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:54:59,370 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2021-12-22 13:54:59,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:54:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2021-12-22 13:54:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-22 13:54:59,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:54:59,372 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:54:59,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:54:59,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 13:54:59,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:54:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:54:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1459419536, now seen corresponding path program 1 times [2021-12-22 13:54:59,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:54:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088257048] [2021-12-22 13:54:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:59,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:54:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:54:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:54:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:54:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:54:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:54:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:54:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:54:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:54:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:54:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:54:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:54:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:54:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:54:59,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:54:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088257048] [2021-12-22 13:54:59,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088257048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:54:59,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356163863] [2021-12-22 13:54:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:59,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:54:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:54:59,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:54:59,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:55:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:55:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 13:55:00,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:55:00,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356163863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:55:00,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:55:00,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-22 13:55:00,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633448814] [2021-12-22 13:55:00,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:55:00,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 13:55:00,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:00,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 13:55:00,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:55:00,539 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-22 13:55:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:01,070 INFO L93 Difference]: Finished difference Result 481 states and 648 transitions. [2021-12-22 13:55:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:55:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 97 [2021-12-22 13:55:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:01,072 INFO L225 Difference]: With dead ends: 481 [2021-12-22 13:55:01,072 INFO L226 Difference]: Without dead ends: 258 [2021-12-22 13:55:01,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:55:01,073 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 456 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:01,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 772 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:55:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-22 13:55:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2021-12-22 13:55:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-22 13:55:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2021-12-22 13:55:01,085 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 97 [2021-12-22 13:55:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:01,085 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2021-12-22 13:55:01,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-22 13:55:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2021-12-22 13:55:01,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-22 13:55:01,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:01,087 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:01,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-22 13:55:01,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:01,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2034657995, now seen corresponding path program 1 times [2021-12-22 13:55:01,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:01,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388316254] [2021-12-22 13:55:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:01,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:55:01,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388316254] [2021-12-22 13:55:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388316254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:01,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:01,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:55:01,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85329886] [2021-12-22 13:55:01,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:01,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:55:01,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:55:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:55:01,527 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:01,919 INFO L93 Difference]: Finished difference Result 478 states and 642 transitions. [2021-12-22 13:55:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:55:01,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2021-12-22 13:55:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:01,921 INFO L225 Difference]: With dead ends: 478 [2021-12-22 13:55:01,921 INFO L226 Difference]: Without dead ends: 255 [2021-12-22 13:55:01,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:01,923 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 239 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:01,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 812 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:55:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-22 13:55:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2021-12-22 13:55:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-22 13:55:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2021-12-22 13:55:01,932 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 99 [2021-12-22 13:55:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:01,933 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2021-12-22 13:55:01,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2021-12-22 13:55:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 13:55:01,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:01,934 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:01,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:55:01,934 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1162403066, now seen corresponding path program 1 times [2021-12-22 13:55:01,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:01,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767995776] [2021-12-22 13:55:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:01,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:55:02,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:02,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767995776] [2021-12-22 13:55:02,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767995776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:02,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403822113] [2021-12-22 13:55:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:02,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:02,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:02,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:02,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:55:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:02,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-22 13:55:02,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:02,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 13:55:03,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-22 13:55:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 13:55:03,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:55:03,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403822113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:55:03,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:55:03,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2021-12-22 13:55:03,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459799351] [2021-12-22 13:55:03,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:55:03,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 13:55:03,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 13:55:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:55:03,458 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-22 13:55:05,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:05,237 INFO L93 Difference]: Finished difference Result 608 states and 831 transitions. [2021-12-22 13:55:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-22 13:55:05,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 101 [2021-12-22 13:55:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:05,242 INFO L225 Difference]: With dead ends: 608 [2021-12-22 13:55:05,242 INFO L226 Difference]: Without dead ends: 401 [2021-12-22 13:55:05,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 13:55:05,244 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 285 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 538 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:05,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2369 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1919 Invalid, 0 Unknown, 538 Unchecked, 1.4s Time] [2021-12-22 13:55:05,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-22 13:55:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 290. [2021-12-22 13:55:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.2063492063492063) internal successors, (228), 190 states have internal predecessors, (228), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2021-12-22 13:55:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 391 transitions. [2021-12-22 13:55:05,267 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 391 transitions. Word has length 101 [2021-12-22 13:55:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:05,267 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 391 transitions. [2021-12-22 13:55:05,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-22 13:55:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 391 transitions. [2021-12-22 13:55:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-22 13:55:05,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:05,268 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:05,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:05,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:05,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1694138625, now seen corresponding path program 1 times [2021-12-22 13:55:05,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990291816] [2021-12-22 13:55:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:05,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:55:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-22 13:55:05,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990291816] [2021-12-22 13:55:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990291816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:05,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:05,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:55:05,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4611622] [2021-12-22 13:55:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:55:05,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:55:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:55:05,682 INFO L87 Difference]: Start difference. First operand 290 states and 391 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:06,179 INFO L93 Difference]: Finished difference Result 399 states and 531 transitions. [2021-12-22 13:55:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2021-12-22 13:55:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:06,181 INFO L225 Difference]: With dead ends: 399 [2021-12-22 13:55:06,181 INFO L226 Difference]: Without dead ends: 328 [2021-12-22 13:55:06,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:55:06,181 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 210 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:06,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1341 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:55:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-22 13:55:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 292. [2021-12-22 13:55:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2021-12-22 13:55:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 393 transitions. [2021-12-22 13:55:06,199 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 393 transitions. Word has length 105 [2021-12-22 13:55:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:06,200 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 393 transitions. [2021-12-22 13:55:06,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 393 transitions. [2021-12-22 13:55:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-22 13:55:06,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:06,235 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:06,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:55:06,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1159574532, now seen corresponding path program 1 times [2021-12-22 13:55:06,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:06,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228832347] [2021-12-22 13:55:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:06,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:55:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-22 13:55:06,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228832347] [2021-12-22 13:55:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228832347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:06,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:06,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 13:55:06,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386507048] [2021-12-22 13:55:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 13:55:06,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 13:55:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:55:06,826 INFO L87 Difference]: Start difference. First operand 292 states and 393 transitions. Second operand has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-22 13:55:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:08,479 INFO L93 Difference]: Finished difference Result 405 states and 566 transitions. [2021-12-22 13:55:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:55:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 107 [2021-12-22 13:55:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:08,483 INFO L225 Difference]: With dead ends: 405 [2021-12-22 13:55:08,483 INFO L226 Difference]: Without dead ends: 403 [2021-12-22 13:55:08,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2021-12-22 13:55:08,484 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 441 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:08,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1749 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 13:55:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-22 13:55:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 310. [2021-12-22 13:55:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 202 states have (on average 1.198019801980198) internal successors, (242), 204 states have internal predecessors, (242), 83 states have call successors, (83), 23 states have call predecessors, (83), 24 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2021-12-22 13:55:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 415 transitions. [2021-12-22 13:55:08,507 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 415 transitions. Word has length 107 [2021-12-22 13:55:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:08,507 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 415 transitions. [2021-12-22 13:55:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-22 13:55:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 415 transitions. [2021-12-22 13:55:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 13:55:08,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:08,509 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:08,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:55:08,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:08,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1506419318, now seen corresponding path program 1 times [2021-12-22 13:55:08,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:08,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27456265] [2021-12-22 13:55:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:08,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:55:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:55:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:55:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:55:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:55:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 13:55:08,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27456265] [2021-12-22 13:55:08,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27456265] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052644980] [2021-12-22 13:55:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:08,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:08,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:55:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-22 13:55:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 13:55:09,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:09,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052644980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:09,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:09,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 15 [2021-12-22 13:55:09,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707200371] [2021-12-22 13:55:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:09,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:55:09,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:55:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:09,353 INFO L87 Difference]: Start difference. First operand 310 states and 415 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:09,558 INFO L93 Difference]: Finished difference Result 582 states and 785 transitions. [2021-12-22 13:55:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 13:55:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 109 [2021-12-22 13:55:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:09,562 INFO L225 Difference]: With dead ends: 582 [2021-12-22 13:55:09,562 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 13:55:09,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:55:09,564 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 30 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:09,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 3718 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 13:55:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2021-12-22 13:55:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1941747572815533) internal successors, (246), 209 states have internal predecessors, (246), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (97), 82 states have call predecessors, (97), 82 states have call successors, (97) [2021-12-22 13:55:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 426 transitions. [2021-12-22 13:55:09,581 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 426 transitions. Word has length 109 [2021-12-22 13:55:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:09,581 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 426 transitions. [2021-12-22 13:55:09,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 426 transitions. [2021-12-22 13:55:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 13:55:09,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:09,584 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:09,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:09,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:09,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 447046383, now seen corresponding path program 1 times [2021-12-22 13:55:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022415894] [2021-12-22 13:55:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:09,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:55:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-22 13:55:10,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:10,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022415894] [2021-12-22 13:55:10,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022415894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:10,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415828440] [2021-12-22 13:55:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:10,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:10,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:10,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 13:55:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:55:10,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 13:55:10,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415828440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-12-22 13:55:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376251480] [2021-12-22 13:55:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:55:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:55:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:55:10,641 INFO L87 Difference]: Start difference. First operand 315 states and 426 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:10,854 INFO L93 Difference]: Finished difference Result 575 states and 783 transitions. [2021-12-22 13:55:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:55:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2021-12-22 13:55:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:10,856 INFO L225 Difference]: With dead ends: 575 [2021-12-22 13:55:10,856 INFO L226 Difference]: Without dead ends: 315 [2021-12-22 13:55:10,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:10,857 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 15 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:10,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1171 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2021-12-22 13:55:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-22 13:55:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-22 13:55:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 209 states have internal predecessors, (245), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (97), 82 states have call predecessors, (97), 82 states have call successors, (97) [2021-12-22 13:55:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 425 transitions. [2021-12-22 13:55:10,877 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 425 transitions. Word has length 111 [2021-12-22 13:55:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:10,877 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 425 transitions. [2021-12-22 13:55:10,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 425 transitions. [2021-12-22 13:55:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 13:55:10,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:10,879 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:10,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:11,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:11,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1007746161, now seen corresponding path program 1 times [2021-12-22 13:55:11,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:11,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083065960] [2021-12-22 13:55:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:55:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 13:55:11,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:11,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083065960] [2021-12-22 13:55:11,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083065960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:11,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:11,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:55:11,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959049750] [2021-12-22 13:55:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:11,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:11,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:11,360 INFO L87 Difference]: Start difference. First operand 315 states and 425 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:12,041 INFO L93 Difference]: Finished difference Result 581 states and 776 transitions. [2021-12-22 13:55:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:55:12,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2021-12-22 13:55:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:12,043 INFO L225 Difference]: With dead ends: 581 [2021-12-22 13:55:12,044 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 13:55:12,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:55:12,045 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 105 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:12,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1957 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 13:55:12,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 13:55:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2021-12-22 13:55:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 209 states have internal predecessors, (245), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (95), 82 states have call predecessors, (95), 82 states have call successors, (95) [2021-12-22 13:55:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 423 transitions. [2021-12-22 13:55:12,076 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 423 transitions. Word has length 111 [2021-12-22 13:55:12,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:12,077 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 423 transitions. [2021-12-22 13:55:12,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 423 transitions. [2021-12-22 13:55:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 13:55:12,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:12,078 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:12,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:55:12,078 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:12,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -520378079, now seen corresponding path program 1 times [2021-12-22 13:55:12,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:12,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720931139] [2021-12-22 13:55:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:12,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:55:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:55:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-22 13:55:12,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:12,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720931139] [2021-12-22 13:55:12,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720931139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:12,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:12,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 13:55:12,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750805629] [2021-12-22 13:55:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:12,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 13:55:12,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 13:55:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:12,588 INFO L87 Difference]: Start difference. First operand 315 states and 423 transitions. Second operand has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-22 13:55:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:13,864 INFO L93 Difference]: Finished difference Result 412 states and 576 transitions. [2021-12-22 13:55:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:55:13,865 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 116 [2021-12-22 13:55:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:13,867 INFO L225 Difference]: With dead ends: 412 [2021-12-22 13:55:13,867 INFO L226 Difference]: Without dead ends: 410 [2021-12-22 13:55:13,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-12-22 13:55:13,867 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 443 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:13,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1229 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 13:55:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-22 13:55:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 321. [2021-12-22 13:55:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 213 states have internal predecessors, (249), 84 states have call successors, (84), 24 states have call predecessors, (84), 26 states have return successors, (96), 83 states have call predecessors, (96), 83 states have call successors, (96) [2021-12-22 13:55:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 429 transitions. [2021-12-22 13:55:13,887 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 429 transitions. Word has length 116 [2021-12-22 13:55:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:13,888 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 429 transitions. [2021-12-22 13:55:13,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-22 13:55:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 429 transitions. [2021-12-22 13:55:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 13:55:13,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:13,889 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:13,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:55:13,889 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1585491666, now seen corresponding path program 1 times [2021-12-22 13:55:13,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:13,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002441034] [2021-12-22 13:55:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:13,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:55:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-22 13:55:14,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:14,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002441034] [2021-12-22 13:55:14,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002441034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:14,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:14,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:55:14,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404038148] [2021-12-22 13:55:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:14,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:55:14,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:55:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:55:14,091 INFO L87 Difference]: Start difference. First operand 321 states and 429 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:14,555 INFO L93 Difference]: Finished difference Result 349 states and 466 transitions. [2021-12-22 13:55:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 114 [2021-12-22 13:55:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:14,557 INFO L225 Difference]: With dead ends: 349 [2021-12-22 13:55:14,557 INFO L226 Difference]: Without dead ends: 347 [2021-12-22 13:55:14,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:55:14,558 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 117 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:14,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1729 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:55:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-22 13:55:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 330. [2021-12-22 13:55:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 216 states have (on average 1.1805555555555556) internal successors, (255), 220 states have internal predecessors, (255), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (104), 84 states have call predecessors, (104), 84 states have call successors, (104) [2021-12-22 13:55:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 444 transitions. [2021-12-22 13:55:14,584 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 444 transitions. Word has length 114 [2021-12-22 13:55:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 444 transitions. [2021-12-22 13:55:14,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 444 transitions. [2021-12-22 13:55:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 13:55:14,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:14,590 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:14,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:55:14,590 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash 661869912, now seen corresponding path program 1 times [2021-12-22 13:55:14,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338059867] [2021-12-22 13:55:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:14,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 13:55:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-22 13:55:14,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338059867] [2021-12-22 13:55:14,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338059867] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:14,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990527831] [2021-12-22 13:55:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:14,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:15,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:15,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 13:55:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:15,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-22 13:55:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:15,530 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:15,533 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 13:55:15,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:15,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990527831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:15,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:15,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-22 13:55:15,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833685221] [2021-12-22 13:55:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:15,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:55:15,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:55:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:55:15,995 INFO L87 Difference]: Start difference. First operand 330 states and 444 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:16,285 INFO L93 Difference]: Finished difference Result 748 states and 1039 transitions. [2021-12-22 13:55:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:55:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2021-12-22 13:55:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:16,287 INFO L225 Difference]: With dead ends: 748 [2021-12-22 13:55:16,287 INFO L226 Difference]: Without dead ends: 459 [2021-12-22 13:55:16,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:55:16,288 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 83 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:16,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 3258 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 202 Unchecked, 0.2s Time] [2021-12-22 13:55:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-22 13:55:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 343. [2021-12-22 13:55:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 227 states have (on average 1.1762114537444934) internal successors, (267), 232 states have internal predecessors, (267), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (106), 84 states have call predecessors, (106), 85 states have call successors, (106) [2021-12-22 13:55:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2021-12-22 13:55:16,313 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 113 [2021-12-22 13:55:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:16,313 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2021-12-22 13:55:16,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 13:55:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2021-12-22 13:55:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 13:55:16,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:16,314 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:16,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-22 13:55:16,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:16,534 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 607477014, now seen corresponding path program 1 times [2021-12-22 13:55:16,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:16,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122247684] [2021-12-22 13:55:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:16,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 13:55:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-22 13:55:16,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122247684] [2021-12-22 13:55:16,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122247684] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001728821] [2021-12-22 13:55:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:16,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:16,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:16,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 13:55:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:55:17,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-22 13:55:17,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:17,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001728821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:17,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:17,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-22 13:55:17,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185614517] [2021-12-22 13:55:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:17,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:55:17,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:55:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:55:17,223 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:17,255 INFO L93 Difference]: Finished difference Result 623 states and 840 transitions. [2021-12-22 13:55:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:55:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-12-22 13:55:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:17,257 INFO L225 Difference]: With dead ends: 623 [2021-12-22 13:55:17,257 INFO L226 Difference]: Without dead ends: 345 [2021-12-22 13:55:17,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:17,258 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 6 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:17,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 966 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:55:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-22 13:55:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2021-12-22 13:55:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 226 states have (on average 1.1725663716814159) internal successors, (265), 231 states have internal predecessors, (265), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-22 13:55:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 456 transitions. [2021-12-22 13:55:17,275 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 456 transitions. Word has length 113 [2021-12-22 13:55:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:17,276 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 456 transitions. [2021-12-22 13:55:17,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 13:55:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 456 transitions. [2021-12-22 13:55:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 13:55:17,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:17,277 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:17,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-22 13:55:17,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-22 13:55:17,498 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1031558170, now seen corresponding path program 1 times [2021-12-22 13:55:17,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:17,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798019078] [2021-12-22 13:55:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:17,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:55:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 13:55:17,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:17,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798019078] [2021-12-22 13:55:17,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798019078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:17,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:17,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:55:17,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016140011] [2021-12-22 13:55:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:17,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:55:17,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:55:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:17,734 INFO L87 Difference]: Start difference. First operand 342 states and 456 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:18,107 INFO L93 Difference]: Finished difference Result 733 states and 992 transitions. [2021-12-22 13:55:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:55:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2021-12-22 13:55:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:18,109 INFO L225 Difference]: With dead ends: 733 [2021-12-22 13:55:18,109 INFO L226 Difference]: Without dead ends: 402 [2021-12-22 13:55:18,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:55:18,110 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 175 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:18,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 801 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:55:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-22 13:55:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 352. [2021-12-22 13:55:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 236 states have (on average 1.1822033898305084) internal successors, (279), 241 states have internal predecessors, (279), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-22 13:55:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 470 transitions. [2021-12-22 13:55:18,130 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 470 transitions. Word has length 118 [2021-12-22 13:55:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:18,131 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 470 transitions. [2021-12-22 13:55:18,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-22 13:55:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 470 transitions. [2021-12-22 13:55:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 13:55:18,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:18,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:18,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:55:18,132 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1289723608, now seen corresponding path program 1 times [2021-12-22 13:55:18,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:18,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482126266] [2021-12-22 13:55:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:18,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:55:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-22 13:55:18,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482126266] [2021-12-22 13:55:18,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482126266] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347887330] [2021-12-22 13:55:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:18,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:18,445 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:18,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 13:55:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:18,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-22 13:55:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:18,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 13:55:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 13:55:19,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347887330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:19,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 16 [2021-12-22 13:55:19,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188147644] [2021-12-22 13:55:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:19,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:55:19,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:55:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:55:19,220 INFO L87 Difference]: Start difference. First operand 352 states and 470 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-22 13:55:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:19,329 INFO L93 Difference]: Finished difference Result 716 states and 952 transitions. [2021-12-22 13:55:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:55:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2021-12-22 13:55:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:19,331 INFO L225 Difference]: With dead ends: 716 [2021-12-22 13:55:19,331 INFO L226 Difference]: Without dead ends: 371 [2021-12-22 13:55:19,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:55:19,333 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 29 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:19,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1543 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2021-12-22 13:55:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-22 13:55:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-22 13:55:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 254 states have (on average 1.188976377952756) internal successors, (302), 259 states have internal predecessors, (302), 86 states have call successors, (86), 27 states have call predecessors, (86), 30 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-22 13:55:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2021-12-22 13:55:19,350 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 118 [2021-12-22 13:55:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:19,350 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2021-12-22 13:55:19,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-22 13:55:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2021-12-22 13:55:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 13:55:19,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:19,351 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:19,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:19,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-22 13:55:19,572 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 406214618, now seen corresponding path program 1 times [2021-12-22 13:55:19,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:19,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186529421] [2021-12-22 13:55:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:19,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 13:55:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:55:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:55:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:55:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 13:55:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:55:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-22 13:55:19,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:19,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186529421] [2021-12-22 13:55:19,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186529421] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:19,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674839437] [2021-12-22 13:55:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:19,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:19,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:19,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 13:55:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:55:20,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-22 13:55:20,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:20,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674839437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:20,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:20,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-22 13:55:20,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875027464] [2021-12-22 13:55:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:20,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:55:20,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:55:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:55:20,281 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:20,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:20,317 INFO L93 Difference]: Finished difference Result 738 states and 989 transitions. [2021-12-22 13:55:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:55:20,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2021-12-22 13:55:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:20,319 INFO L225 Difference]: With dead ends: 738 [2021-12-22 13:55:20,319 INFO L226 Difference]: Without dead ends: 393 [2021-12-22 13:55:20,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:20,320 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 20 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:20,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 967 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:55:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-22 13:55:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 367. [2021-12-22 13:55:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 251 states have (on average 1.1832669322709164) internal successors, (297), 255 states have internal predecessors, (297), 86 states have call successors, (86), 27 states have call predecessors, (86), 29 states have return successors, (104), 84 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-22 13:55:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 487 transitions. [2021-12-22 13:55:20,341 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 487 transitions. Word has length 118 [2021-12-22 13:55:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:20,341 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 487 transitions. [2021-12-22 13:55:20,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 487 transitions. [2021-12-22 13:55:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 13:55:20,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:20,342 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:20,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:20,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-22 13:55:20,562 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 935054174, now seen corresponding path program 2 times [2021-12-22 13:55:20,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555740705] [2021-12-22 13:55:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:20,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:55:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:55:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:55:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:55:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:55:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:55:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:55:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:55:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:55:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-22 13:55:20,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555740705] [2021-12-22 13:55:20,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555740705] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014185399] [2021-12-22 13:55:20,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:55:20,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:20,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:20,755 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:20,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 13:55:21,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:55:21,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:55:21,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-22 13:55:21,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:21,275 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:21,279 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:21,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:21,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-22 13:55:21,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:21,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-22 13:55:21,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:21,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-22 13:55:21,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:21,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-22 13:55:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-22 13:55:22,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:22,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014185399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:22,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:22,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2021-12-22 13:55:22,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069041932] [2021-12-22 13:55:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:22,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:55:22,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:55:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-22 13:55:22,525 INFO L87 Difference]: Start difference. First operand 367 states and 487 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-22 13:55:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:22,589 INFO L93 Difference]: Finished difference Result 605 states and 785 transitions. [2021-12-22 13:55:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:55:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 122 [2021-12-22 13:55:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:22,591 INFO L225 Difference]: With dead ends: 605 [2021-12-22 13:55:22,592 INFO L226 Difference]: Without dead ends: 485 [2021-12-22 13:55:22,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-22 13:55:22,593 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 54 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:22,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1496 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2021-12-22 13:55:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-22 13:55:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 468. [2021-12-22 13:55:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 333 states have (on average 1.1861861861861862) internal successors, (395), 337 states have internal predecessors, (395), 97 states have call successors, (97), 35 states have call predecessors, (97), 37 states have return successors, (118), 95 states have call predecessors, (118), 96 states have call successors, (118) [2021-12-22 13:55:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 610 transitions. [2021-12-22 13:55:22,614 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 610 transitions. Word has length 122 [2021-12-22 13:55:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:22,614 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 610 transitions. [2021-12-22 13:55:22,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-22 13:55:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 610 transitions. [2021-12-22 13:55:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-22 13:55:22,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:22,616 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:22,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:22,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:22,823 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash -350314988, now seen corresponding path program 1 times [2021-12-22 13:55:22,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:22,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403555968] [2021-12-22 13:55:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:22,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:55:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:55:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:55:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 13:55:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:55:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:55:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:55:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:55:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 13:55:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:55:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:55:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:55:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-22 13:55:23,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:23,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403555968] [2021-12-22 13:55:23,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403555968] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350045086] [2021-12-22 13:55:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:23,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:23,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:23,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 13:55:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:23,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-22 13:55:23,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-22 13:55:23,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:23,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350045086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:23,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:23,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-22 13:55:23,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855035949] [2021-12-22 13:55:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:23,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:55:23,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:55:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:55:23,643 INFO L87 Difference]: Start difference. First operand 468 states and 610 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 13:55:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:23,773 INFO L93 Difference]: Finished difference Result 902 states and 1177 transitions. [2021-12-22 13:55:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:55:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2021-12-22 13:55:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:23,775 INFO L225 Difference]: With dead ends: 902 [2021-12-22 13:55:23,775 INFO L226 Difference]: Without dead ends: 483 [2021-12-22 13:55:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:55:23,777 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 12 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:23,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2454 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:55:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-22 13:55:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 478. [2021-12-22 13:55:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 341 states have (on average 1.1788856304985338) internal successors, (402), 347 states have internal predecessors, (402), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-22 13:55:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 624 transitions. [2021-12-22 13:55:23,800 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 624 transitions. Word has length 128 [2021-12-22 13:55:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:23,800 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 624 transitions. [2021-12-22 13:55:23,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 13:55:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 624 transitions. [2021-12-22 13:55:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 13:55:23,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:23,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:23,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:24,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:24,022 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash -24703323, now seen corresponding path program 1 times [2021-12-22 13:55:24,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:24,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789684819] [2021-12-22 13:55:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:24,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:55:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 13:55:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-22 13:55:24,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:24,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789684819] [2021-12-22 13:55:24,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789684819] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:24,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058561108] [2021-12-22 13:55:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:24,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:24,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:24,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 13:55:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:24,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:55:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-22 13:55:24,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:24,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058561108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:24,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:24,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-22 13:55:24,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768440006] [2021-12-22 13:55:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:24,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:55:24,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:55:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:55:24,702 INFO L87 Difference]: Start difference. First operand 478 states and 624 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:24,768 INFO L93 Difference]: Finished difference Result 933 states and 1225 transitions. [2021-12-22 13:55:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:55:24,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-22 13:55:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:24,771 INFO L225 Difference]: With dead ends: 933 [2021-12-22 13:55:24,771 INFO L226 Difference]: Without dead ends: 489 [2021-12-22 13:55:24,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:24,773 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 9 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:24,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 965 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:55:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-22 13:55:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 477. [2021-12-22 13:55:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 340 states have (on average 1.1647058823529413) internal successors, (396), 346 states have internal predecessors, (396), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-22 13:55:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 618 transitions. [2021-12-22 13:55:24,799 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 618 transitions. Word has length 124 [2021-12-22 13:55:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 618 transitions. [2021-12-22 13:55:24,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 618 transitions. [2021-12-22 13:55:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 13:55:24,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:24,801 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:24,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:25,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-22 13:55:25,012 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash -275114519, now seen corresponding path program 1 times [2021-12-22 13:55:25,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:25,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046817381] [2021-12-22 13:55:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:25,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:55:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 13:55:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-22 13:55:25,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:25,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046817381] [2021-12-22 13:55:25,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046817381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:25,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196468084] [2021-12-22 13:55:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:25,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:25,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:25,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 13:55:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:25,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:55:25,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-22 13:55:25,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:55:25,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196468084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:25,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:55:25,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-22 13:55:25,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530482637] [2021-12-22 13:55:25,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:25,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:55:25,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:55:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:55:25,703 INFO L87 Difference]: Start difference. First operand 477 states and 618 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:25,736 INFO L93 Difference]: Finished difference Result 952 states and 1246 transitions. [2021-12-22 13:55:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:55:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-22 13:55:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:25,739 INFO L225 Difference]: With dead ends: 952 [2021-12-22 13:55:25,739 INFO L226 Difference]: Without dead ends: 506 [2021-12-22 13:55:25,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:55:25,741 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 34 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:25,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 958 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:55:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-22 13:55:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 469. [2021-12-22 13:55:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 332 states have (on average 1.144578313253012) internal successors, (380), 338 states have internal predecessors, (380), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-22 13:55:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 602 transitions. [2021-12-22 13:55:25,775 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 602 transitions. Word has length 124 [2021-12-22 13:55:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:25,776 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 602 transitions. [2021-12-22 13:55:25,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:55:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 602 transitions. [2021-12-22 13:55:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 13:55:25,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:25,777 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:25,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:25,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:25,983 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 755926379, now seen corresponding path program 1 times [2021-12-22 13:55:25,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:25,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704784340] [2021-12-22 13:55:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:25,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:55:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 13:55:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 13:55:26,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:26,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704784340] [2021-12-22 13:55:26,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704784340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:26,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552298010] [2021-12-22 13:55:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:26,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:26,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:26,460 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:26,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-22 13:55:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:26,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-22 13:55:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:26,999 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:27,003 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:27,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-22 13:55:27,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:27,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-22 13:55:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:27,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-22 13:55:27,767 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 13:55:27,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-22 13:55:27,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-22 13:55:27,828 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 13:55:27,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-22 13:55:27,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-22 13:55:28,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-22 13:55:28,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-22 13:55:28,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-22 13:55:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 33 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 13:55:28,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:29,161 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1520 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1520) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)) (forall ((v_ArrVal_1522 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1522) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0))) (forall ((v_ArrVal_1523 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1523)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.offset|) 18446744073709551616) 0)))) is different from false [2021-12-22 13:55:29,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552298010] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:29,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:55:29,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 32 [2021-12-22 13:55:29,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432202469] [2021-12-22 13:55:29,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:55:29,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 13:55:29,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 13:55:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1127, Unknown=1, NotChecked=68, Total=1332 [2021-12-22 13:55:29,185 INFO L87 Difference]: Start difference. First operand 469 states and 602 transitions. Second operand has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-22 13:55:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:31,568 INFO L93 Difference]: Finished difference Result 1147 states and 1590 transitions. [2021-12-22 13:55:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-22 13:55:31,569 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) Word has length 124 [2021-12-22 13:55:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:31,573 INFO L225 Difference]: With dead ends: 1147 [2021-12-22 13:55:31,573 INFO L226 Difference]: Without dead ends: 832 [2021-12-22 13:55:31,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 198 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=283, Invalid=2800, Unknown=1, NotChecked=108, Total=3192 [2021-12-22 13:55:31,584 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 460 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:31,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 5512 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 3095 Invalid, 0 Unknown, 649 Unchecked, 1.8s Time] [2021-12-22 13:55:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-12-22 13:55:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 604. [2021-12-22 13:55:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 421 states have (on average 1.1377672209026128) internal successors, (479), 429 states have internal predecessors, (479), 132 states have call successors, (132), 45 states have call predecessors, (132), 50 states have return successors, (182), 129 states have call predecessors, (182), 131 states have call successors, (182) [2021-12-22 13:55:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 793 transitions. [2021-12-22 13:55:31,672 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 793 transitions. Word has length 124 [2021-12-22 13:55:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:31,673 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 793 transitions. [2021-12-22 13:55:31,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-22 13:55:31,674 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 793 transitions. [2021-12-22 13:55:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:55:31,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:31,677 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:31,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:31,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:31,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -734369057, now seen corresponding path program 1 times [2021-12-22 13:55:31,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:31,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552169160] [2021-12-22 13:55:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:31,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:55:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 13:55:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 13:55:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 13:55:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:55:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:55:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-22 13:55:32,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552169160] [2021-12-22 13:55:32,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552169160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:55:32,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:55:32,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:55:32,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094676262] [2021-12-22 13:55:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:32,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:55:32,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:55:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:55:32,296 INFO L87 Difference]: Start difference. First operand 604 states and 793 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-22 13:55:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:33,565 INFO L93 Difference]: Finished difference Result 926 states and 1244 transitions. [2021-12-22 13:55:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:55:33,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 130 [2021-12-22 13:55:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:33,572 INFO L225 Difference]: With dead ends: 926 [2021-12-22 13:55:33,573 INFO L226 Difference]: Without dead ends: 805 [2021-12-22 13:55:33,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:55:33,574 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 361 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:33,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2147 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 13:55:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-12-22 13:55:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 753. [2021-12-22 13:55:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 516 states have (on average 1.1317829457364341) internal successors, (584), 521 states have internal predecessors, (584), 180 states have call successors, (180), 48 states have call predecessors, (180), 56 states have return successors, (261), 183 states have call predecessors, (261), 179 states have call successors, (261) [2021-12-22 13:55:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1025 transitions. [2021-12-22 13:55:33,636 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1025 transitions. Word has length 130 [2021-12-22 13:55:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:33,636 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1025 transitions. [2021-12-22 13:55:33,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-22 13:55:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1025 transitions. [2021-12-22 13:55:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:55:33,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:33,643 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 13:55:33,643 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1720956240, now seen corresponding path program 1 times [2021-12-22 13:55:33,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:33,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306397481] [2021-12-22 13:55:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:33,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:55:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:55:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:55:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:55:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:55:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 13:55:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:55:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-22 13:55:34,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306397481] [2021-12-22 13:55:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306397481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912155355] [2021-12-22 13:55:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:34,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:34,298 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:34,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-22 13:55:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:34,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-22 13:55:34,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:35,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 13:55:35,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-22 13:55:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 13:55:35,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:35,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-12-22 13:55:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-22 13:55:36,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912155355] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:36,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:55:36,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [22, 20] total 42 [2021-12-22 13:55:36,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059031228] [2021-12-22 13:55:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:55:36,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:55:36,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:55:36,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1616, Unknown=0, NotChecked=0, Total=1722 [2021-12-22 13:55:36,107 INFO L87 Difference]: Start difference. First operand 753 states and 1025 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-22 13:55:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:36,593 INFO L93 Difference]: Finished difference Result 865 states and 1214 transitions. [2021-12-22 13:55:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:55:36,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2021-12-22 13:55:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:36,597 INFO L225 Difference]: With dead ends: 865 [2021-12-22 13:55:36,597 INFO L226 Difference]: Without dead ends: 863 [2021-12-22 13:55:36,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 255 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2021-12-22 13:55:36,602 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 106 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:36,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 3103 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:55:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-12-22 13:55:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 757. [2021-12-22 13:55:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 519 states have (on average 1.1310211946050097) internal successors, (587), 524 states have internal predecessors, (587), 180 states have call successors, (180), 49 states have call predecessors, (180), 57 states have return successors, (261), 183 states have call predecessors, (261), 179 states have call successors, (261) [2021-12-22 13:55:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1028 transitions. [2021-12-22 13:55:36,668 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1028 transitions. Word has length 130 [2021-12-22 13:55:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:36,668 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1028 transitions. [2021-12-22 13:55:36,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-22 13:55:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1028 transitions. [2021-12-22 13:55:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-22 13:55:36,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:36,671 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:36,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:36,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-22 13:55:36,880 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:36,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash 942287315, now seen corresponding path program 1 times [2021-12-22 13:55:36,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:36,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633127693] [2021-12-22 13:55:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:36,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:55:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:55:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:55:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 13:55:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:55:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 13:55:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 13:55:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:55:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:55:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:55:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:55:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 13:55:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-22 13:55:37,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:37,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633127693] [2021-12-22 13:55:37,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633127693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:37,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779837073] [2021-12-22 13:55:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:37,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:37,277 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:37,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-22 13:55:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:37,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-22 13:55:37,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:37,854 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:37,859 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:38,297 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 13:55:38,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2021-12-22 13:55:38,301 INFO L387 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 [2021-12-22 13:55:38,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 13:55:38,311 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-22 13:55:38,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-22 13:55:38,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-12-22 13:55:39,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-22 13:55:39,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:39,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 13:55:39,311 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 13:55:39,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-22 13:55:39,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:55:39,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-12-22 13:55:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 13:55:39,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:40,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2021-12-22 13:55:40,555 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1736 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (not (<= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1736) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 16)) 18446744073709551616) 0)) (let ((.cse0 (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8))) (and (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) .cse0 |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite504#1.offset|)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) .cse1) 0) (= .cse0 .cse1) (= |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite504#1.base| 0) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|))))) is different from false [2021-12-22 13:55:40,584 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1736 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (and (= (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8)) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|)) (not (<= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1736) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 16)) 18446744073709551616) 0)))) is different from false [2021-12-22 13:55:40,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779837073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:40,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:55:40,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 36 [2021-12-22 13:55:40,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332557668] [2021-12-22 13:55:40,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:55:40,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-22 13:55:40,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-22 13:55:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1650, Unknown=2, NotChecked=166, Total=1980 [2021-12-22 13:55:40,608 INFO L87 Difference]: Start difference. First operand 757 states and 1028 transitions. Second operand has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-22 13:55:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:44,282 INFO L93 Difference]: Finished difference Result 1689 states and 2431 transitions. [2021-12-22 13:55:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-22 13:55:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) Word has length 129 [2021-12-22 13:55:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:44,288 INFO L225 Difference]: With dead ends: 1689 [2021-12-22 13:55:44,288 INFO L226 Difference]: Without dead ends: 1278 [2021-12-22 13:55:44,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 202 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=506, Invalid=5200, Unknown=2, NotChecked=298, Total=6006 [2021-12-22 13:55:44,291 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 521 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 5447 SdHoareTripleChecker+Invalid, 8406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2698 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:44,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 5447 Invalid, 8406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 5298 Invalid, 0 Unknown, 2698 Unchecked, 2.5s Time] [2021-12-22 13:55:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-12-22 13:55:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 887. [2021-12-22 13:55:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 631 states have (on average 1.12202852614897) internal successors, (708), 640 states have internal predecessors, (708), 184 states have call successors, (184), 59 states have call predecessors, (184), 71 states have return successors, (271), 187 states have call predecessors, (271), 183 states have call successors, (271) [2021-12-22 13:55:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1163 transitions. [2021-12-22 13:55:44,361 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1163 transitions. Word has length 129 [2021-12-22 13:55:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:44,361 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1163 transitions. [2021-12-22 13:55:44,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-22 13:55:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1163 transitions. [2021-12-22 13:55:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 13:55:44,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:44,364 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:44,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:44,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-22 13:55:44,579 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash -576629289, now seen corresponding path program 1 times [2021-12-22 13:55:44,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:44,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994457823] [2021-12-22 13:55:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:44,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:55:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:55:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:55:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 13:55:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:55:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 13:55:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 13:55:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 13:55:44,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:44,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994457823] [2021-12-22 13:55:44,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994457823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532422301] [2021-12-22 13:55:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:44,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:44,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:44,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-22 13:55:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:45,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-22 13:55:45,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-22 13:55:45,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:55:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 13:55:45,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532422301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:55:45,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:55:45,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 23 [2021-12-22 13:55:45,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830741489] [2021-12-22 13:55:45,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:55:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-22 13:55:45,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:55:45,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-22 13:55:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:55:45,806 INFO L87 Difference]: Start difference. First operand 887 states and 1163 transitions. Second operand has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-22 13:55:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:55:46,812 INFO L93 Difference]: Finished difference Result 1443 states and 1916 transitions. [2021-12-22 13:55:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:55:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 134 [2021-12-22 13:55:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:55:46,816 INFO L225 Difference]: With dead ends: 1443 [2021-12-22 13:55:46,816 INFO L226 Difference]: Without dead ends: 758 [2021-12-22 13:55:46,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2021-12-22 13:55:46,818 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 234 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 13:55:46,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 3946 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 13:55:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-12-22 13:55:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 719. [2021-12-22 13:55:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 502 states have (on average 1.1055776892430278) internal successors, (555), 509 states have internal predecessors, (555), 156 states have call successors, (156), 53 states have call predecessors, (156), 60 states have return successors, (222), 156 states have call predecessors, (222), 155 states have call successors, (222) [2021-12-22 13:55:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 933 transitions. [2021-12-22 13:55:46,868 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 933 transitions. Word has length 134 [2021-12-22 13:55:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:55:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 933 transitions. [2021-12-22 13:55:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-22 13:55:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 933 transitions. [2021-12-22 13:55:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:55:46,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:55:46,870 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:55:46,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-22 13:55:47,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-22 13:55:47,088 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:55:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:55:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2016036362, now seen corresponding path program 1 times [2021-12-22 13:55:47,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:55:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535934385] [2021-12-22 13:55:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:47,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:55:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:55:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 13:55:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:55:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 13:55:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 13:55:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:55:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:55:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:55:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:55:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:55:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:55:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 13:55:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 13:55:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-22 13:55:47,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:55:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535934385] [2021-12-22 13:55:47,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535934385] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:55:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734842301] [2021-12-22 13:55:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:55:47,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:55:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:55:47,526 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:55:47,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-22 13:55:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:55:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-22 13:55:48,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:55:48,038 INFO L387 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 [2021-12-22 13:55:48,219 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 13:55:48,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-22 13:55:48,226 INFO L387 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 13 treesize of output 9 [2021-12-22 13:55:48,672 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-22 13:55:48,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22