./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_move_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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:05:11,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:05:11,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:05:11,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:05:11,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:05:11,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:05:11,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:05:11,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:05:11,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:05:11,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:05:11,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:05:11,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:05:11,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:05:11,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:05:11,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:05:11,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:05:11,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:05:11,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:05:11,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:05:11,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:05:11,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:05:11,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:05:11,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:05:11,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:05:11,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:05:11,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:05:11,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:05:11,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:05:11,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:05:11,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:05:11,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:05:11,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:05:11,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:05:11,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:05:11,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:05:11,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:05:11,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:05:11,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:05:11,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:05:11,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:05:11,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:05:11,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:05:11,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:05:11,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:05:11,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:05:11,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:05:11,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:05:11,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:05:11,181 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:05:11,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:05:11,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:05:11,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:05:11,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:05:11,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:05:11,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:05:11,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:05:11,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:05:11,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:05:11,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:05:11,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:05:11,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:05:11,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:05:11,184 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:05:11,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:05:11,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:05:11,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:05:11,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-06 11:05:11,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:05:11,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:05:11,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:05:11,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:05:11,391 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:05:11,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-06 11:05:11,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f494f6933/6287459a3ede431d9663d6fead4d10b1/FLAGb07fa1528 [2021-11-06 11:05:12,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:05:12,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-06 11:05:12,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f494f6933/6287459a3ede431d9663d6fead4d10b1/FLAGb07fa1528 [2021-11-06 11:05:12,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f494f6933/6287459a3ede431d9663d6fead4d10b1 [2021-11-06 11:05:12,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:05:12,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:05:12,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:05:12,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:05:12,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:05:12,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:12" (1/1) ... [2021-11-06 11:05:12,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f27e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:12, skipping insertion in model container [2021-11-06 11:05:12,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:12" (1/1) ... [2021-11-06 11:05:12,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:05:12,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:05:12,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-06 11:05:12,774 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-06 11:05:12,791 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:05:12,797 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:05:13,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,347 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:05:13,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:05:13,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:05:13,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:05:13,567 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:05:13,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:05:13,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:05:13,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:05:13,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:05:13,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:05:13,697 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:05:13,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:05:14,007 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:05:14,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-06 11:05:14,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-06 11:05:14,017 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:05:14,018 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:05:14,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,059 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:05:14,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:05:14,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:05:14,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:05:14,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:05:14,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:05:14,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:05:14,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:05:14,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:05:14,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:05:14,111 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:05:14,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:14,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:05:14,401 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:05:14,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14 WrapperNode [2021-11-06 11:05:14,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:05:14,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:05:14,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:05:14,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:05:14,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:05:14,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:05:14,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:05:14,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:05:14,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:05:14,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:05:14,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:05:14,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:05:14,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (1/1) ... [2021-11-06 11:05:14,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:05:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:14,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 11:05:14,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 11:05:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 11:05:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:05:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:05:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:05:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:05:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:05:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:05:21,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:05:21,460 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-06 11:05:21,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:21 BoogieIcfgContainer [2021-11-06 11:05:21,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:05:21,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:05:21,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:05:21,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:05:21,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:12" (1/3) ... [2021-11-06 11:05:21,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423240c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:21, skipping insertion in model container [2021-11-06 11:05:21,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:14" (2/3) ... [2021-11-06 11:05:21,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423240c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:21, skipping insertion in model container [2021-11-06 11:05:21,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:21" (3/3) ... [2021-11-06 11:05:21,479 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2021-11-06 11:05:21,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:05:21,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 11:05:21,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:05:21,542 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 11:05:21,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 11:05:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 11:05:21,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:21,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:21,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1930291544, now seen corresponding path program 1 times [2021-11-06 11:05:21,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:21,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976953637] [2021-11-06 11:05:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:21,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:22,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:22,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976953637] [2021-11-06 11:05:22,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976953637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:22,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:22,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:05:22,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758021632] [2021-11-06 11:05:22,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:05:22,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:22,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:05:22,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:05:22,070 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:22,092 INFO L93 Difference]: Finished difference Result 230 states and 303 transitions. [2021-11-06 11:05:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:05:22,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-06 11:05:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:22,099 INFO L225 Difference]: With dead ends: 230 [2021-11-06 11:05:22,099 INFO L226 Difference]: Without dead ends: 111 [2021-11-06 11:05:22,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:05:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-06 11:05:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-06 11:05:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 110 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2021-11-06 11:05:22,131 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 60 [2021-11-06 11:05:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:22,131 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2021-11-06 11:05:22,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2021-11-06 11:05:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 11:05:22,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:22,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:22,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:05:22,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2019289401, now seen corresponding path program 1 times [2021-11-06 11:05:22,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:22,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413789132] [2021-11-06 11:05:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:22,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:22,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:22,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011740192] [2021-11-06 11:05:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:22,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:22,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:22,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:22,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:05:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:22,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:05:22,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:23,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:23,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413789132] [2021-11-06 11:05:23,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:23,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011740192] [2021-11-06 11:05:23,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011740192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:23,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:23,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:23,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079839675] [2021-11-06 11:05:23,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:23,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:23,304 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:23,483 INFO L93 Difference]: Finished difference Result 295 states and 352 transitions. [2021-11-06 11:05:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 11:05:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:23,485 INFO L225 Difference]: With dead ends: 295 [2021-11-06 11:05:23,485 INFO L226 Difference]: Without dead ends: 206 [2021-11-06 11:05:23,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:23,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-06 11:05:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2021-11-06 11:05:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 116 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2021-11-06 11:05:23,493 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 63 [2021-11-06 11:05:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:23,493 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2021-11-06 11:05:23,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2021-11-06 11:05:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:05:23,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:23,495 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:23,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:23,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:23,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -986854087, now seen corresponding path program 1 times [2021-11-06 11:05:23,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:23,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942348978] [2021-11-06 11:05:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:23,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:24,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:24,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942348978] [2021-11-06 11:05:24,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942348978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:24,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:24,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:05:24,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762776073] [2021-11-06 11:05:24,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:05:24,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:05:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:05:24,150 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:29,241 INFO L93 Difference]: Finished difference Result 232 states and 275 transitions. [2021-11-06 11:05:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 11:05:29,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 11:05:29,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:29,243 INFO L225 Difference]: With dead ends: 232 [2021-11-06 11:05:29,243 INFO L226 Difference]: Without dead ends: 153 [2021-11-06 11:05:29,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:05:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-06 11:05:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 119. [2021-11-06 11:05:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.206896551724138) internal successors, (140), 118 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-11-06 11:05:29,250 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 67 [2021-11-06 11:05:29,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:29,251 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-11-06 11:05:29,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-11-06 11:05:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:05:29,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:29,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:29,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:05:29,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash -93367749, now seen corresponding path program 1 times [2021-11-06 11:05:29,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:29,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59165421] [2021-11-06 11:05:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:29,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:29,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:29,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59165421] [2021-11-06 11:05:29,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59165421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:29,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:29,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:29,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010935800] [2021-11-06 11:05:29,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:29,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:29,451 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:29,579 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2021-11-06 11:05:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 11:05:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:29,584 INFO L225 Difference]: With dead ends: 201 [2021-11-06 11:05:29,584 INFO L226 Difference]: Without dead ends: 117 [2021-11-06 11:05:29,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-06 11:05:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-06 11:05:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 116 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-06 11:05:29,590 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 67 [2021-11-06 11:05:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:29,590 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-06 11:05:29,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-06 11:05:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 11:05:29,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:29,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:29,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:05:29,591 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1039203884, now seen corresponding path program 1 times [2021-11-06 11:05:29,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:29,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387486533] [2021-11-06 11:05:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:29,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:29,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:29,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387486533] [2021-11-06 11:05:29,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387486533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:29,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:29,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:29,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142149442] [2021-11-06 11:05:29,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:29,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:29,903 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:34,794 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2021-11-06 11:05:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:05:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 11:05:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:34,798 INFO L225 Difference]: With dead ends: 200 [2021-11-06 11:05:34,798 INFO L226 Difference]: Without dead ends: 120 [2021-11-06 11:05:34,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:05:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-06 11:05:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-11-06 11:05:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 116 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-11-06 11:05:34,805 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 69 [2021-11-06 11:05:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:34,806 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-11-06 11:05:34,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-11-06 11:05:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 11:05:34,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:34,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:34,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 11:05:34,811 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash 896958085, now seen corresponding path program 1 times [2021-11-06 11:05:34,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:34,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919089913] [2021-11-06 11:05:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:34,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:35,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:35,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919089913] [2021-11-06 11:05:35,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919089913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:35,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:35,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 11:05:35,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27485260] [2021-11-06 11:05:35,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 11:05:35,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 11:05:35,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:05:35,642 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:55,727 INFO L93 Difference]: Finished difference Result 322 states and 357 transitions. [2021-11-06 11:05:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 11:05:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 11:05:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:55,730 INFO L225 Difference]: With dead ends: 322 [2021-11-06 11:05:55,731 INFO L226 Difference]: Without dead ends: 285 [2021-11-06 11:05:55,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2021-11-06 11:05:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-06 11:05:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 139. [2021-11-06 11:05:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.161764705882353) internal successors, (158), 138 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2021-11-06 11:05:55,747 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 70 [2021-11-06 11:05:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:55,747 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2021-11-06 11:05:55,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2021-11-06 11:05:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 11:05:55,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:55,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:55,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:05:55,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash -791985657, now seen corresponding path program 1 times [2021-11-06 11:05:55,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:55,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909464353] [2021-11-06 11:05:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:55,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:56,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:56,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909464353] [2021-11-06 11:05:56,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909464353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:56,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:56,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:56,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588739928] [2021-11-06 11:05:56,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:56,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:56,043 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:56,285 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2021-11-06 11:05:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:05:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 11:05:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:56,287 INFO L225 Difference]: With dead ends: 181 [2021-11-06 11:05:56,287 INFO L226 Difference]: Without dead ends: 139 [2021-11-06 11:05:56,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:05:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-06 11:05:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-06 11:05:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.1470588235294117) internal successors, (156), 138 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-11-06 11:05:56,293 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 70 [2021-11-06 11:05:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:56,293 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-11-06 11:05:56,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-11-06 11:05:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:05:56,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:56,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:56,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:05:56,295 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash -520428082, now seen corresponding path program 1 times [2021-11-06 11:05:56,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:56,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171245663] [2021-11-06 11:05:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:56,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:58,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:58,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171245663] [2021-11-06 11:05:58,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171245663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:58,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:58,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 11:05:58,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598222561] [2021-11-06 11:05:58,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 11:05:58,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 11:05:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:05:58,050 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:25,857 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2021-11-06 11:06:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:06:25,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:06:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:25,859 INFO L225 Difference]: With dead ends: 230 [2021-11-06 11:06:25,859 INFO L226 Difference]: Without dead ends: 193 [2021-11-06 11:06:25,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 11:06:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-06 11:06:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2021-11-06 11:06:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 139 states have (on average 1.143884892086331) internal successors, (159), 141 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2021-11-06 11:06:25,866 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 73 [2021-11-06 11:06:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2021-11-06 11:06:25,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2021-11-06 11:06:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:06:25,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:25,867 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:25,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:06:25,868 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:06:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 213292611, now seen corresponding path program 1 times [2021-11-06 11:06:25,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:25,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441047872] [2021-11-06 11:06:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:25,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:26,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:26,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441047872] [2021-11-06 11:06:26,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441047872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:26,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:26,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 11:06:26,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127483455] [2021-11-06 11:06:26,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 11:06:26,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 11:06:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:06:26,652 INFO L87 Difference]: Start difference. First operand 142 states and 159 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:45,990 INFO L93 Difference]: Finished difference Result 287 states and 313 transitions. [2021-11-06 11:06:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 11:06:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:06:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:45,992 INFO L225 Difference]: With dead ends: 287 [2021-11-06 11:06:45,992 INFO L226 Difference]: Without dead ends: 265 [2021-11-06 11:06:45,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=466, Invalid=1696, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 11:06:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-06 11:06:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 168. [2021-11-06 11:06:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 165 states have (on average 1.1333333333333333) internal successors, (187), 167 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-11-06 11:06:46,000 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 73 [2021-11-06 11:06:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:46,000 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-11-06 11:06:46,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-11-06 11:06:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:06:46,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:46,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:46,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:06:46,002 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:06:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1988299973, now seen corresponding path program 1 times [2021-11-06 11:06:46,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:46,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477932165] [2021-11-06 11:06:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:46,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:46,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:46,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477932165] [2021-11-06 11:06:46,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477932165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:46,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:46,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:06:46,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808617747] [2021-11-06 11:06:46,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:06:46,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:06:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:06:46,236 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:46,382 INFO L93 Difference]: Finished difference Result 195 states and 216 transitions. [2021-11-06 11:06:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:06:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:06:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:46,384 INFO L225 Difference]: With dead ends: 195 [2021-11-06 11:06:46,384 INFO L226 Difference]: Without dead ends: 168 [2021-11-06 11:06:46,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:06:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-06 11:06:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-06 11:06:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 165 states have (on average 1.1151515151515152) internal successors, (184), 167 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2021-11-06 11:06:46,394 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 73 [2021-11-06 11:06:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:46,394 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2021-11-06 11:06:46,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2021-11-06 11:06:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:06:46,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:46,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:06:46,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:06:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1650211918, now seen corresponding path program 1 times [2021-11-06 11:06:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:46,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260215596] [2021-11-06 11:06:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:46,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:46,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:06:46,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008312568] [2021-11-06 11:06:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:46,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:06:46,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:06:46,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:06:46,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:06:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:47,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:06:47,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:06:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:47,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:47,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260215596] [2021-11-06 11:06:47,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:06:47,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008312568] [2021-11-06 11:06:47,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008312568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:47,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:47,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:06:47,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623091134] [2021-11-06 11:06:47,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:06:47,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:47,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:06:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:06:47,474 INFO L87 Difference]: Start difference. First operand 168 states and 184 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:47,635 INFO L93 Difference]: Finished difference Result 446 states and 484 transitions. [2021-11-06 11:06:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:06:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:06:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:47,637 INFO L225 Difference]: With dead ends: 446 [2021-11-06 11:06:47,637 INFO L226 Difference]: Without dead ends: 303 [2021-11-06 11:06:47,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:06:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-06 11:06:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 174. [2021-11-06 11:06:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 171 states have (on average 1.1111111111111112) internal successors, (190), 173 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 190 transitions. [2021-11-06 11:06:47,648 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 190 transitions. Word has length 73 [2021-11-06 11:06:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:47,648 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 190 transitions. [2021-11-06 11:06:47,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 190 transitions. [2021-11-06 11:06:47,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:06:47,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:47,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:47,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 11:06:47,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-06 11:06:47,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:06:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1924971532, now seen corresponding path program 1 times [2021-11-06 11:06:47,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:47,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888172242] [2021-11-06 11:06:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:47,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:47,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:06:47,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876425463] [2021-11-06 11:06:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:47,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:06:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:06:47,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:06:47,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:06:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:48,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 11:06:48,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:06:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:06:48,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:48,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888172242] [2021-11-06 11:06:48,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:06:48,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876425463] [2021-11-06 11:06:48,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876425463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:48,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:48,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 11:06:48,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820792838] [2021-11-06 11:06:49,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 11:06:49,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 11:06:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:06:49,000 INFO L87 Difference]: Start difference. First operand 174 states and 190 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:06:49,976 INFO L93 Difference]: Finished difference Result 494 states and 521 transitions. [2021-11-06 11:06:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:06:49,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:06:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:06:49,978 INFO L225 Difference]: With dead ends: 494 [2021-11-06 11:06:49,978 INFO L226 Difference]: Without dead ends: 454 [2021-11-06 11:06:49,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:06:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-06 11:06:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 160. [2021-11-06 11:06:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.1146496815286624) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-06 11:06:49,987 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 73 [2021-11-06 11:06:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:06:49,988 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-06 11:06:49,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:06:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-06 11:06:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 11:06:49,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:06:49,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:06:50,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 11:06:50,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:06:50,197 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:06:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:06:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2000036865, now seen corresponding path program 1 times [2021-11-06 11:06:50,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:06:50,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954335011] [2021-11-06 11:06:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:06:50,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:06:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:06:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 11:06:51,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:06:51,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954335011] [2021-11-06 11:06:51,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954335011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:06:51,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:06:51,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 11:06:51,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028789447] [2021-11-06 11:06:51,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:06:51,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:06:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:06:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:06:51,379 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:07:10,918 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2021-11-06 11:07:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 11:07:10,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 11:07:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:07:10,920 INFO L225 Difference]: With dead ends: 244 [2021-11-06 11:07:10,920 INFO L226 Difference]: Without dead ends: 222 [2021-11-06 11:07:10,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2021-11-06 11:07:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-06 11:07:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 160. [2021-11-06 11:07:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.1146496815286624) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-06 11:07:10,929 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 74 [2021-11-06 11:07:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:07:10,929 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-06 11:07:10,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-06 11:07:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 11:07:10,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:07:10,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:07:10,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 11:07:10,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:07:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1314521510, now seen corresponding path program 1 times [2021-11-06 11:07:10,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:10,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138408148] [2021-11-06 11:07:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:10,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:07:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:07:11,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:07:11,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138408148] [2021-11-06 11:07:11,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138408148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:07:11,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:07:11,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 11:07:11,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243330285] [2021-11-06 11:07:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 11:07:11,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:07:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 11:07:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:07:11,704 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:07:22,689 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2021-11-06 11:07:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 11:07:22,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 11:07:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:07:22,691 INFO L225 Difference]: With dead ends: 221 [2021-11-06 11:07:22,691 INFO L226 Difference]: Without dead ends: 199 [2021-11-06 11:07:22,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-06 11:07:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-06 11:07:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2021-11-06 11:07:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.120253164556962) internal successors, (177), 160 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2021-11-06 11:07:22,700 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 76 [2021-11-06 11:07:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:07:22,701 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2021-11-06 11:07:22,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2021-11-06 11:07:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 11:07:22,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:07:22,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:07:22,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 11:07:22,702 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:07:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:22,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1205156668, now seen corresponding path program 1 times [2021-11-06 11:07:22,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:22,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453281756] [2021-11-06 11:07:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:22,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:07:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:07:23,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:07:23,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453281756] [2021-11-06 11:07:23,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453281756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:07:23,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:07:23,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:07:23,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482378797] [2021-11-06 11:07:23,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:07:23,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:07:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:07:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:07:23,600 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:07:23,624 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2021-11-06 11:07:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:07:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 11:07:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:07:23,636 INFO L225 Difference]: With dead ends: 193 [2021-11-06 11:07:23,636 INFO L226 Difference]: Without dead ends: 162 [2021-11-06 11:07:23,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:07:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-06 11:07:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-06 11:07:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 159 states have (on average 1.1132075471698113) internal successors, (177), 161 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-11-06 11:07:23,646 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 76 [2021-11-06 11:07:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:07:23,646 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-11-06 11:07:23,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-11-06 11:07:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 11:07:23,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:07:23,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:07:23,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 11:07:23,648 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:07:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1882439370, now seen corresponding path program 1 times [2021-11-06 11:07:23,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:23,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923275559] [2021-11-06 11:07:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:23,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:07:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 11:07:25,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:07:25,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923275559] [2021-11-06 11:07:25,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923275559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:07:25,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:07:25,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 11:07:25,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934619968] [2021-11-06 11:07:25,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 11:07:25,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:07:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 11:07:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-06 11:07:25,225 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:07:39,999 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2021-11-06 11:07:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:07:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 11:07:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:07:40,001 INFO L225 Difference]: With dead ends: 185 [2021-11-06 11:07:40,001 INFO L226 Difference]: Without dead ends: 163 [2021-11-06 11:07:40,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 11:07:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-06 11:07:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 124. [2021-11-06 11:07:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 123 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-11-06 11:07:40,011 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 77 [2021-11-06 11:07:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:07:40,011 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-11-06 11:07:40,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-11-06 11:07:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 11:07:40,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:07:40,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:07:40,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 11:07:40,012 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:07:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1721439042, now seen corresponding path program 1 times [2021-11-06 11:07:40,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:40,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652085577] [2021-11-06 11:07:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:40,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:07:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:07:40,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:07:40,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652085577] [2021-11-06 11:07:40,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652085577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:07:40,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438403678] [2021-11-06 11:07:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:40,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:07:40,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:07:40,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:07:40,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:07:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:07:41,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-06 11:07:41,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:07:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 11:07:42,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438403678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:07:42,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 11:07:42,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-06 11:07:42,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401585010] [2021-11-06 11:07:42,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:07:42,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:07:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:07:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:07:42,223 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:07:42,511 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2021-11-06 11:07:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:07:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 11:07:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:07:42,512 INFO L225 Difference]: With dead ends: 222 [2021-11-06 11:07:42,512 INFO L226 Difference]: Without dead ends: 124 [2021-11-06 11:07:42,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:07:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-06 11:07:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-11-06 11:07:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.0825688073394495) internal successors, (118), 111 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2021-11-06 11:07:42,524 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 77 [2021-11-06 11:07:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:07:42,524 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 118 transitions. [2021-11-06 11:07:42,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:07:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions. [2021-11-06 11:07:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 11:07:42,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:07:42,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:07:42,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:07:42,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 11:07:42,736 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:07:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:07:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash -931199318, now seen corresponding path program 1 times [2021-11-06 11:07:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:07:42,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466438682] [2021-11-06 11:07:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:42,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:07:42,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:07:42,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925787226] [2021-11-06 11:07:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:07:42,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:07:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:07:42,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:07:42,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:09:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:09:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:09:19,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:09:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:09:19,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:09:19,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466438682] [2021-11-06 11:09:19,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:09:19,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925787226] [2021-11-06 11:09:19,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925787226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:09:19,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 11:09:19,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 11:09:19,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683110015] [2021-11-06 11:09:19,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:09:19,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:09:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:09:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:09:19,424 INFO L87 Difference]: Start difference. First operand 112 states and 118 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:09:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:09:19,463 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-11-06 11:09:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:09:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 11:09:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:09:19,465 INFO L225 Difference]: With dead ends: 144 [2021-11-06 11:09:19,465 INFO L226 Difference]: Without dead ends: 113 [2021-11-06 11:09:19,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:09:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-06 11:09:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-06 11:09:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.0818181818181818) internal successors, (119), 112 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:09:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2021-11-06 11:09:19,472 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 83 [2021-11-06 11:09:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:09:19,472 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2021-11-06 11:09:19,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:09:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2021-11-06 11:09:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 11:09:19,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:09:19,473 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:09:19,687 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-06 11:09:19,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:09:19,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 11:09:19,698 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:09:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:09:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 771002128, now seen corresponding path program 2 times [2021-11-06 11:09:19,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:09:19,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505871872] [2021-11-06 11:09:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:09:19,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:09:19,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:09:19,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123316007] [2021-11-06 11:09:19,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 11:09:19,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:09:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:09:19,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:09:19,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15