/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-pthread/cs_fib-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:14:14,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:14:14,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:14:14,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:14:14,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:14:14,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:14:14,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:14:14,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:14:14,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:14:14,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:14:14,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:14:14,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:14:14,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:14:14,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:14:14,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:14:14,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:14:14,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:14:14,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:14:14,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:14:14,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:14:14,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:14:14,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:14:14,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:14:14,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:14:14,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:14:14,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:14:14,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:14:14,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:14:14,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:14:14,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:14:14,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:14:14,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:14:14,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:14:14,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:14:14,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:14:14,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:14:14,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:14:14,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:14:14,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:14:14,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:14:14,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:14:14,519 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:14:14,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:14:14,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:14:14,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:14:14,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:14:14,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:14:14,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:14:14,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:14:14,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:14:14,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:14:14,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:14:14,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:14:14,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:14:14,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:14:14,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:14:14,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:14:14,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:14:14,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:14:14,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:14:14,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:14:14,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:14:14,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:14:14,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:14:15,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:14:15,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:14:15,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:14:15,029 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:14:15,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_fib-2.i [2020-12-22 09:14:15,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b6df448/a35b056f886348bbb942e0ba9c80c8bc/FLAG795c8a16e [2020-12-22 09:14:15,811 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:14:15,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-2.i [2020-12-22 09:14:15,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b6df448/a35b056f886348bbb942e0ba9c80c8bc/FLAG795c8a16e [2020-12-22 09:14:16,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b6df448/a35b056f886348bbb942e0ba9c80c8bc [2020-12-22 09:14:16,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:14:16,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:14:16,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:14:16,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:14:16,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:14:16,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:16,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c34b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16, skipping insertion in model container [2020-12-22 09:14:16,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:16,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:14:16,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:14:16,589 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-2.i[23457,23470] [2020-12-22 09:14:16,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:14:16,752 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:14:16,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-2.i[23457,23470] [2020-12-22 09:14:16,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:14:16,978 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:14:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16 WrapperNode [2020-12-22 09:14:16,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:14:16,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:14:16,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:14:16,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:14:16,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:14:17,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:14:17,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:14:17,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:14:17,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... [2020-12-22 09:14:17,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:14:17,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:14:17,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:14:17,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:14:17,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:14:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 09:14:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 09:14:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 09:14:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:14:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 09:14:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 09:14:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:14:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:14:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:14:17,799 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:17,801 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:17,818 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:17,819 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:17,833 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:17,834 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 09:14:23,733 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-4: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,733 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-4: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,733 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-5: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,734 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-5: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2020-12-22 09:14:23,734 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-6: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,734 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-6: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,734 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-20: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,735 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-20: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,735 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-21: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,735 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-21: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2020-12-22 09:14:23,735 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-22: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,735 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-22: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-36: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-36: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-37: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-37: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2020-12-22 09:14:23,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-38: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2020-12-22 09:14:23,737 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-38: assume !(0 != ~__CS_ret~0 % 256); [2020-12-22 09:14:23,737 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-12: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,737 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-12: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,737 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-14: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,737 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-15: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-15: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-17: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-18: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-18: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-20: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,738 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-60: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-60: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-62: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-63: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-63: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-65: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,739 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-66: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-66: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-68: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-108: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-108: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-110: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-111: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-111: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-113: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-114: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-114: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-22 09:14:23,741 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-116: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##205: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##212: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-4: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,742 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-5: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-6: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-20: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-21: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-22: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-36: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,743 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-37: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,744 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-38: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-22 09:14:23,744 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-8: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,744 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-8: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,744 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-36: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,744 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-36: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,745 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-64: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,745 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-64: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,745 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,745 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,745 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,746 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,746 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##355: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,746 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##354: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,746 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##362: assume !(0 == assume_abort_if_not_~cond); [2020-12-22 09:14:23,746 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##361: assume 0 == assume_abort_if_not_~cond;assume false; [2020-12-22 09:14:23,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:14:23,762 INFO L299 CfgBuilder]: Removed 334 assume(true) statements. [2020-12-22 09:14:23,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:14:23 BoogieIcfgContainer [2020-12-22 09:14:23,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:14:23,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:14:23,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:14:23,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:14:23,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:14:16" (1/3) ... [2020-12-22 09:14:23,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a6c16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:14:23, skipping insertion in model container [2020-12-22 09:14:23,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:14:16" (2/3) ... [2020-12-22 09:14:23,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a6c16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:14:23, skipping insertion in model container [2020-12-22 09:14:23,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:14:23" (3/3) ... [2020-12-22 09:14:23,776 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_fib-2.i [2020-12-22 09:14:23,784 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:14:23,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 09:14:23,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 09:14:23,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:14:23,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:14:23,862 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:14:23,862 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:14:23,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:14:23,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:14:23,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:14:23,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:14:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states. [2020-12-22 09:14:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 09:14:23,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:23,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:23,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:23,942 INFO L82 PathProgramCache]: Analyzing trace with hash 306120471, now seen corresponding path program 1 times [2020-12-22 09:14:23,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:23,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216976624] [2020-12-22 09:14:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:14:24,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216976624] [2020-12-22 09:14:24,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:24,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:24,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399205965] [2020-12-22 09:14:24,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:24,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:24,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:24,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:24,604 INFO L87 Difference]: Start difference. First operand 392 states. Second operand 3 states. [2020-12-22 09:14:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:24,722 INFO L93 Difference]: Finished difference Result 787 states and 1209 transitions. [2020-12-22 09:14:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:24,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 09:14:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:24,750 INFO L225 Difference]: With dead ends: 787 [2020-12-22 09:14:24,751 INFO L226 Difference]: Without dead ends: 393 [2020-12-22 09:14:24,763 INFO L677 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 [2020-12-22 09:14:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-12-22 09:14:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2020-12-22 09:14:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-12-22 09:14:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 504 transitions. [2020-12-22 09:14:24,860 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 504 transitions. Word has length 92 [2020-12-22 09:14:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:24,860 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 504 transitions. [2020-12-22 09:14:24,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 504 transitions. [2020-12-22 09:14:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 09:14:24,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:24,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:24,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:14:24,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:24,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:24,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1940473127, now seen corresponding path program 1 times [2020-12-22 09:14:24,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:24,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656134817] [2020-12-22 09:14:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:14:25,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656134817] [2020-12-22 09:14:25,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:25,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:25,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971413474] [2020-12-22 09:14:25,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:25,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:25,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:25,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:25,013 INFO L87 Difference]: Start difference. First operand 389 states and 504 transitions. Second operand 3 states. [2020-12-22 09:14:25,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:25,067 INFO L93 Difference]: Finished difference Result 777 states and 1008 transitions. [2020-12-22 09:14:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:25,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 09:14:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:25,073 INFO L225 Difference]: With dead ends: 777 [2020-12-22 09:14:25,073 INFO L226 Difference]: Without dead ends: 391 [2020-12-22 09:14:25,075 INFO L677 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 [2020-12-22 09:14:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-12-22 09:14:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 390. [2020-12-22 09:14:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-12-22 09:14:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 505 transitions. [2020-12-22 09:14:25,097 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 505 transitions. Word has length 96 [2020-12-22 09:14:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:25,097 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 505 transitions. [2020-12-22 09:14:25,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 505 transitions. [2020-12-22 09:14:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:14:25,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:25,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:25,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:14:25,102 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1103101335, now seen corresponding path program 1 times [2020-12-22 09:14:25,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:25,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272101465] [2020-12-22 09:14:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:14:25,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272101465] [2020-12-22 09:14:25,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820203311] [2020-12-22 09:14:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 09:14:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:14:26,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:14:26,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 09:14:26,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644656987] [2020-12-22 09:14:26,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:14:26,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:26,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:14:26,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:14:26,168 INFO L87 Difference]: Start difference. First operand 390 states and 505 transitions. Second operand 5 states. [2020-12-22 09:14:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:26,231 INFO L93 Difference]: Finished difference Result 780 states and 1011 transitions. [2020-12-22 09:14:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:14:26,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 09:14:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:26,236 INFO L225 Difference]: With dead ends: 780 [2020-12-22 09:14:26,236 INFO L226 Difference]: Without dead ends: 393 [2020-12-22 09:14:26,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:14:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-12-22 09:14:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2020-12-22 09:14:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-12-22 09:14:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 507 transitions. [2020-12-22 09:14:26,258 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 507 transitions. Word has length 98 [2020-12-22 09:14:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:26,259 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 507 transitions. [2020-12-22 09:14:26,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:14:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 507 transitions. [2020-12-22 09:14:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 09:14:26,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:26,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:26,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 09:14:26,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1105430741, now seen corresponding path program 2 times [2020-12-22 09:14:26,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:26,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69725689] [2020-12-22 09:14:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 09:14:26,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69725689] [2020-12-22 09:14:26,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135821569] [2020-12-22 09:14:26,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:29,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 09:14:29,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 09:14:29,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:14:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:14:29,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:14:29,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 09:14:29,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546895545] [2020-12-22 09:14:29,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:29,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:29,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:29,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:14:29,663 INFO L87 Difference]: Start difference. First operand 392 states and 507 transitions. Second operand 3 states. [2020-12-22 09:14:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:29,693 INFO L93 Difference]: Finished difference Result 682 states and 872 transitions. [2020-12-22 09:14:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:29,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 09:14:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:29,697 INFO L225 Difference]: With dead ends: 682 [2020-12-22 09:14:29,698 INFO L226 Difference]: Without dead ends: 392 [2020-12-22 09:14:29,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:14:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-12-22 09:14:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2020-12-22 09:14:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-12-22 09:14:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 506 transitions. [2020-12-22 09:14:29,723 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 506 transitions. Word has length 100 [2020-12-22 09:14:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:29,725 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 506 transitions. [2020-12-22 09:14:29,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 506 transitions. [2020-12-22 09:14:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 09:14:29,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:29,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:29,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:29,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:29,933 INFO L82 PathProgramCache]: Analyzing trace with hash -636186260, now seen corresponding path program 1 times [2020-12-22 09:14:29,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:29,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639026301] [2020-12-22 09:14:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 09:14:30,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639026301] [2020-12-22 09:14:30,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868827509] [2020-12-22 09:14:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:30,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:14:30,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:14:30,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:14:30,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 09:14:30,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670556245] [2020-12-22 09:14:30,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:30,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:30,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:30,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:30,990 INFO L87 Difference]: Start difference. First operand 392 states and 506 transitions. Second operand 7 states. [2020-12-22 09:14:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:31,322 INFO L93 Difference]: Finished difference Result 802 states and 1036 transitions. [2020-12-22 09:14:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:14:31,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-12-22 09:14:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:31,326 INFO L225 Difference]: With dead ends: 802 [2020-12-22 09:14:31,326 INFO L226 Difference]: Without dead ends: 413 [2020-12-22 09:14:31,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:14:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-12-22 09:14:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 404. [2020-12-22 09:14:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-12-22 09:14:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 519 transitions. [2020-12-22 09:14:31,343 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 519 transitions. Word has length 110 [2020-12-22 09:14:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:31,344 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 519 transitions. [2020-12-22 09:14:31,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 519 transitions. [2020-12-22 09:14:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:14:31,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:31,350 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:31,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:31,564 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 704873388, now seen corresponding path program 2 times [2020-12-22 09:14:31,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:31,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208110402] [2020-12-22 09:14:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 09:14:31,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208110402] [2020-12-22 09:14:31,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610263131] [2020-12-22 09:14:31,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:34,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 09:14:34,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 09:14:35,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 09:14:35,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 09:14:35,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:14:35,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-12-22 09:14:35,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973025650] [2020-12-22 09:14:35,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:14:35,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:14:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:14:35,494 INFO L87 Difference]: Start difference. First operand 404 states and 519 transitions. Second operand 5 states. [2020-12-22 09:14:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:35,740 INFO L93 Difference]: Finished difference Result 698 states and 889 transitions. [2020-12-22 09:14:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:14:35,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-12-22 09:14:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:35,747 INFO L225 Difference]: With dead ends: 698 [2020-12-22 09:14:35,747 INFO L226 Difference]: Without dead ends: 696 [2020-12-22 09:14:35,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:14:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-12-22 09:14:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 670. [2020-12-22 09:14:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-12-22 09:14:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 862 transitions. [2020-12-22 09:14:35,778 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 862 transitions. Word has length 122 [2020-12-22 09:14:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:35,780 INFO L481 AbstractCegarLoop]: Abstraction has 670 states and 862 transitions. [2020-12-22 09:14:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:14:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 862 transitions. [2020-12-22 09:14:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 09:14:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:35,783 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:35,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:35,985 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:35,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1221301873, now seen corresponding path program 1 times [2020-12-22 09:14:35,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:35,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153638088] [2020-12-22 09:14:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 09:14:36,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153638088] [2020-12-22 09:14:36,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683066936] [2020-12-22 09:14:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:36,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:14:36,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 09:14:36,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:14:36,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 09:14:36,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210747995] [2020-12-22 09:14:36,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:14:36,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:14:36,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:14:36,995 INFO L87 Difference]: Start difference. First operand 670 states and 862 transitions. Second operand 6 states. [2020-12-22 09:14:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:37,112 INFO L93 Difference]: Finished difference Result 1336 states and 1720 transitions. [2020-12-22 09:14:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:14:37,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-12-22 09:14:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:37,118 INFO L225 Difference]: With dead ends: 1336 [2020-12-22 09:14:37,118 INFO L226 Difference]: Without dead ends: 689 [2020-12-22 09:14:37,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:14:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-12-22 09:14:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 680. [2020-12-22 09:14:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-12-22 09:14:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 873 transitions. [2020-12-22 09:14:37,142 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 873 transitions. Word has length 124 [2020-12-22 09:14:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:37,142 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 873 transitions. [2020-12-22 09:14:37,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:14:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 873 transitions. [2020-12-22 09:14:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:14:37,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:37,145 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:37,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 09:14:37,359 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1248119441, now seen corresponding path program 2 times [2020-12-22 09:14:37,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:37,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756882214] [2020-12-22 09:14:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 09:14:37,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756882214] [2020-12-22 09:14:37,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532665592] [2020-12-22 09:14:37,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:41,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 09:14:41,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 09:14:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 09:14:41,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-12-22 09:14:42,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:14:42,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2020-12-22 09:14:42,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295328625] [2020-12-22 09:14:42,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:42,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:42,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:42,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:14:42,102 INFO L87 Difference]: Start difference. First operand 680 states and 873 transitions. Second operand 7 states. [2020-12-22 09:14:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:42,455 INFO L93 Difference]: Finished difference Result 706 states and 898 transitions. [2020-12-22 09:14:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:14:42,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-12-22 09:14:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:42,463 INFO L225 Difference]: With dead ends: 706 [2020-12-22 09:14:42,463 INFO L226 Difference]: Without dead ends: 704 [2020-12-22 09:14:42,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:14:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-12-22 09:14:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2020-12-22 09:14:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-12-22 09:14:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 875 transitions. [2020-12-22 09:14:42,487 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 875 transitions. Word has length 134 [2020-12-22 09:14:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:42,489 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 875 transitions. [2020-12-22 09:14:42,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 875 transitions. [2020-12-22 09:14:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 09:14:42,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:42,492 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:42,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:42,694 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:42,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1147112596, now seen corresponding path program 1 times [2020-12-22 09:14:42,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:42,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684999701] [2020-12-22 09:14:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 09:14:42,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684999701] [2020-12-22 09:14:42,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408058625] [2020-12-22 09:14:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:43,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 09:14:43,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 09:14:43,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:14:43,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 09:14:43,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709910687] [2020-12-22 09:14:43,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:43,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:43,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:43,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:43,786 INFO L87 Difference]: Start difference. First operand 682 states and 875 transitions. Second operand 7 states. [2020-12-22 09:14:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:43,925 INFO L93 Difference]: Finished difference Result 1350 states and 1735 transitions. [2020-12-22 09:14:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:14:43,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-12-22 09:14:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:43,930 INFO L225 Difference]: With dead ends: 1350 [2020-12-22 09:14:43,930 INFO L226 Difference]: Without dead ends: 701 [2020-12-22 09:14:43,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-22 09:14:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 692. [2020-12-22 09:14:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-12-22 09:14:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 886 transitions. [2020-12-22 09:14:43,951 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 886 transitions. Word has length 136 [2020-12-22 09:14:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:43,952 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 886 transitions. [2020-12-22 09:14:43,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 886 transitions. [2020-12-22 09:14:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 09:14:43,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:43,955 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:44,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:44,157 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:44,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:44,159 INFO L82 PathProgramCache]: Analyzing trace with hash 302807702, now seen corresponding path program 2 times [2020-12-22 09:14:44,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:44,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139765238] [2020-12-22 09:14:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-22 09:14:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139765238] [2020-12-22 09:14:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502407830] [2020-12-22 09:14:44,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:52,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 09:14:52,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 09:14:52,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 09:14:52,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-12-22 09:14:53,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:14:53,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2020-12-22 09:14:53,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573742390] [2020-12-22 09:14:53,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:14:53,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:53,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:14:53,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:14:53,168 INFO L87 Difference]: Start difference. First operand 692 states and 886 transitions. Second operand 8 states. [2020-12-22 09:14:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:54,395 INFO L93 Difference]: Finished difference Result 714 states and 907 transitions. [2020-12-22 09:14:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:14:54,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-12-22 09:14:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:54,403 INFO L225 Difference]: With dead ends: 714 [2020-12-22 09:14:54,404 INFO L226 Difference]: Without dead ends: 712 [2020-12-22 09:14:54,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:14:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-12-22 09:14:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 694. [2020-12-22 09:14:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-12-22 09:14:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2020-12-22 09:14:54,430 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 146 [2020-12-22 09:14:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:54,431 INFO L481 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2020-12-22 09:14:54,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:14:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2020-12-22 09:14:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:14:54,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:54,434 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:54,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 09:14:54,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1059368775, now seen corresponding path program 1 times [2020-12-22 09:14:54,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:54,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619148834] [2020-12-22 09:14:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-22 09:14:54,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619148834] [2020-12-22 09:14:54,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836835585] [2020-12-22 09:14:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:55,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 09:14:55,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:14:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-22 09:14:55,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:14:55,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 09:14:55,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202596806] [2020-12-22 09:14:55,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:14:55,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:14:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:14:55,879 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand 8 states. [2020-12-22 09:14:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:56,015 INFO L93 Difference]: Finished difference Result 1364 states and 1750 transitions. [2020-12-22 09:14:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:56,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-12-22 09:14:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:56,021 INFO L225 Difference]: With dead ends: 1364 [2020-12-22 09:14:56,021 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 09:14:56,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:14:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 09:14:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 704. [2020-12-22 09:14:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-12-22 09:14:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 899 transitions. [2020-12-22 09:14:56,042 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 899 transitions. Word has length 148 [2020-12-22 09:14:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:56,042 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 899 transitions. [2020-12-22 09:14:56,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:14:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 899 transitions. [2020-12-22 09:14:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 09:14:56,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:56,045 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:14:56,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:14:56,259 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash 429476795, now seen corresponding path program 2 times [2020-12-22 09:14:56,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:56,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136858289] [2020-12-22 09:14:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 09:14:56,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136858289] [2020-12-22 09:14:56,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848844248] [2020-12-22 09:14:56,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:15:01,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 09:15:01,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 09:15:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 09:15:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:15:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-12-22 09:15:02,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:15:02,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2020-12-22 09:15:02,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311916748] [2020-12-22 09:15:02,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:02,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:02,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:15:02,039 INFO L87 Difference]: Start difference. First operand 704 states and 899 transitions. Second operand 7 states. [2020-12-22 09:15:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:02,348 INFO L93 Difference]: Finished difference Result 722 states and 916 transitions. [2020-12-22 09:15:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:02,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-12-22 09:15:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:02,353 INFO L225 Difference]: With dead ends: 722 [2020-12-22 09:15:02,353 INFO L226 Difference]: Without dead ends: 720 [2020-12-22 09:15:02,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:15:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-12-22 09:15:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 706. [2020-12-22 09:15:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-12-22 09:15:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 901 transitions. [2020-12-22 09:15:02,376 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 901 transitions. Word has length 158 [2020-12-22 09:15:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:02,376 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 901 transitions. [2020-12-22 09:15:02,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 901 transitions. [2020-12-22 09:15:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 09:15:02,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:02,379 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:02,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:15:02,580 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:02,581 INFO L82 PathProgramCache]: Analyzing trace with hash 410545662, now seen corresponding path program 1 times [2020-12-22 09:15:02,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:02,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835243278] [2020-12-22 09:15:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 09:15:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835243278] [2020-12-22 09:15:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37514801] [2020-12-22 09:15:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:15:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 09:15:03,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:15:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 09:15:03,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:15:03,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 09:15:03,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989649749] [2020-12-22 09:15:03,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:15:03,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:03,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:15:03,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:15:03,907 INFO L87 Difference]: Start difference. First operand 706 states and 901 transitions. Second operand 9 states. [2020-12-22 09:15:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:04,066 INFO L93 Difference]: Finished difference Result 1369 states and 1755 transitions. [2020-12-22 09:15:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 09:15:04,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 160 [2020-12-22 09:15:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:04,071 INFO L225 Difference]: With dead ends: 1369 [2020-12-22 09:15:04,072 INFO L226 Difference]: Without dead ends: 716 [2020-12-22 09:15:04,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:15:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-12-22 09:15:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2020-12-22 09:15:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-12-22 09:15:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 912 transitions. [2020-12-22 09:15:04,099 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 912 transitions. Word has length 160 [2020-12-22 09:15:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:04,099 INFO L481 AbstractCegarLoop]: Abstraction has 716 states and 912 transitions. [2020-12-22 09:15:04,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:15:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 912 transitions. [2020-12-22 09:15:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 09:15:04,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:04,103 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:04,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 09:15:04,317 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1843661312, now seen corresponding path program 2 times [2020-12-22 09:15:04,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:04,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433941051] [2020-12-22 09:15:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:09,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433941051] [2020-12-22 09:15:09,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:09,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:09,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916311417] [2020-12-22 09:15:09,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:15:09,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:15:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:09,781 INFO L87 Difference]: Start difference. First operand 716 states and 912 transitions. Second operand 4 states. [2020-12-22 09:15:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:09,975 INFO L93 Difference]: Finished difference Result 730 states and 925 transitions. [2020-12-22 09:15:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:09,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-12-22 09:15:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:09,980 INFO L225 Difference]: With dead ends: 730 [2020-12-22 09:15:09,980 INFO L226 Difference]: Without dead ends: 728 [2020-12-22 09:15:09,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-12-22 09:15:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 718. [2020-12-22 09:15:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-12-22 09:15:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 914 transitions. [2020-12-22 09:15:10,011 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 914 transitions. Word has length 170 [2020-12-22 09:15:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:10,012 INFO L481 AbstractCegarLoop]: Abstraction has 718 states and 914 transitions. [2020-12-22 09:15:10,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 914 transitions. [2020-12-22 09:15:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 09:15:10,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:10,015 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:10,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:15:10,015 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2063178851, now seen corresponding path program 1 times [2020-12-22 09:15:10,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:10,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646046327] [2020-12-22 09:15:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:18,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646046327] [2020-12-22 09:15:18,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:18,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:18,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220462704] [2020-12-22 09:15:18,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:15:18,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:18,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:15:18,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:18,226 INFO L87 Difference]: Start difference. First operand 718 states and 914 transitions. Second operand 4 states. [2020-12-22 09:15:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:18,416 INFO L93 Difference]: Finished difference Result 728 states and 923 transitions. [2020-12-22 09:15:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:18,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-12-22 09:15:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:18,420 INFO L225 Difference]: With dead ends: 728 [2020-12-22 09:15:18,420 INFO L226 Difference]: Without dead ends: 726 [2020-12-22 09:15:18,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-12-22 09:15:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 720. [2020-12-22 09:15:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-12-22 09:15:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 916 transitions. [2020-12-22 09:15:18,451 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 916 transitions. Word has length 172 [2020-12-22 09:15:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:18,452 INFO L481 AbstractCegarLoop]: Abstraction has 720 states and 916 transitions. [2020-12-22 09:15:18,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:18,452 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 916 transitions. [2020-12-22 09:15:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 09:15:18,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:18,456 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:15:18,456 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:18,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1559808154, now seen corresponding path program 1 times [2020-12-22 09:15:18,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:18,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348465485] [2020-12-22 09:15:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:18,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348465485] [2020-12-22 09:15:18,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:18,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:18,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200070755] [2020-12-22 09:15:18,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:15:18,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:15:18,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:18,795 INFO L87 Difference]: Start difference. First operand 720 states and 916 transitions. Second operand 4 states. [2020-12-22 09:15:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:18,921 INFO L93 Difference]: Finished difference Result 726 states and 921 transitions. [2020-12-22 09:15:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:18,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-12-22 09:15:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:18,925 INFO L225 Difference]: With dead ends: 726 [2020-12-22 09:15:18,925 INFO L226 Difference]: Without dead ends: 569 [2020-12-22 09:15:18,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-12-22 09:15:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2020-12-22 09:15:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-12-22 09:15:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 732 transitions. [2020-12-22 09:15:18,945 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 732 transitions. Word has length 174 [2020-12-22 09:15:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:18,945 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 732 transitions. [2020-12-22 09:15:18,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 732 transitions. [2020-12-22 09:15:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 09:15:18,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:18,949 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:18,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:15:18,949 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:18,949 INFO L82 PathProgramCache]: Analyzing trace with hash -190890505, now seen corresponding path program 1 times [2020-12-22 09:15:18,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:18,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805648105] [2020-12-22 09:15:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:19,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805648105] [2020-12-22 09:15:19,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:19,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:19,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495340693] [2020-12-22 09:15:19,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:19,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:19,177 INFO L87 Difference]: Start difference. First operand 567 states and 732 transitions. Second operand 3 states. [2020-12-22 09:15:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:19,376 INFO L93 Difference]: Finished difference Result 1088 states and 1416 transitions. [2020-12-22 09:15:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:19,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-22 09:15:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:19,381 INFO L225 Difference]: With dead ends: 1088 [2020-12-22 09:15:19,381 INFO L226 Difference]: Without dead ends: 644 [2020-12-22 09:15:19,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-12-22 09:15:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2020-12-22 09:15:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-12-22 09:15:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 836 transitions. [2020-12-22 09:15:19,406 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 836 transitions. Word has length 184 [2020-12-22 09:15:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:19,406 INFO L481 AbstractCegarLoop]: Abstraction has 644 states and 836 transitions. [2020-12-22 09:15:19,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 836 transitions. [2020-12-22 09:15:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 09:15:19,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:19,410 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:19,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:15:19,410 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1536254457, now seen corresponding path program 1 times [2020-12-22 09:15:19,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:19,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820847512] [2020-12-22 09:15:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:19,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820847512] [2020-12-22 09:15:19,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:19,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:15:19,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847160636] [2020-12-22 09:15:19,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:15:19,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:15:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:19,653 INFO L87 Difference]: Start difference. First operand 644 states and 836 transitions. Second operand 4 states. [2020-12-22 09:15:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:19,957 INFO L93 Difference]: Finished difference Result 1172 states and 1529 transitions. [2020-12-22 09:15:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:15:19,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2020-12-22 09:15:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:19,962 INFO L225 Difference]: With dead ends: 1172 [2020-12-22 09:15:19,962 INFO L226 Difference]: Without dead ends: 735 [2020-12-22 09:15:19,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-12-22 09:15:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2020-12-22 09:15:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-12-22 09:15:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 957 transitions. [2020-12-22 09:15:19,990 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 957 transitions. Word has length 184 [2020-12-22 09:15:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:19,990 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 957 transitions. [2020-12-22 09:15:19,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 957 transitions. [2020-12-22 09:15:19,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 09:15:19,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:19,994 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:19,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:15:19,994 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:19,995 INFO L82 PathProgramCache]: Analyzing trace with hash 912972855, now seen corresponding path program 1 times [2020-12-22 09:15:19,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:19,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805442942] [2020-12-22 09:15:19,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:27,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805442942] [2020-12-22 09:15:27,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:27,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:15:27,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042269306] [2020-12-22 09:15:27,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:15:27,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:27,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:15:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:27,772 INFO L87 Difference]: Start difference. First operand 735 states and 957 transitions. Second operand 5 states. [2020-12-22 09:15:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:27,999 INFO L93 Difference]: Finished difference Result 737 states and 959 transitions. [2020-12-22 09:15:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:28,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-12-22 09:15:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:28,004 INFO L225 Difference]: With dead ends: 737 [2020-12-22 09:15:28,004 INFO L226 Difference]: Without dead ends: 735 [2020-12-22 09:15:28,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-12-22 09:15:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2020-12-22 09:15:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 09:15:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 955 transitions. [2020-12-22 09:15:28,035 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 955 transitions. Word has length 184 [2020-12-22 09:15:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:28,036 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 955 transitions. [2020-12-22 09:15:28,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:15:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 955 transitions. [2020-12-22 09:15:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 09:15:28,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:28,039 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:28,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:15:28,039 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1193790298, now seen corresponding path program 1 times [2020-12-22 09:15:28,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:28,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207981629] [2020-12-22 09:15:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:48,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207981629] [2020-12-22 09:15:48,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:48,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:15:48,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965102103] [2020-12-22 09:15:48,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:15:48,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:15:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:48,071 INFO L87 Difference]: Start difference. First operand 733 states and 955 transitions. Second operand 5 states. [2020-12-22 09:15:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:48,342 INFO L93 Difference]: Finished difference Result 735 states and 957 transitions. [2020-12-22 09:15:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:48,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-12-22 09:15:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:48,347 INFO L225 Difference]: With dead ends: 735 [2020-12-22 09:15:48,347 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 09:15:48,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 09:15:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2020-12-22 09:15:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-12-22 09:15:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 953 transitions. [2020-12-22 09:15:48,377 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 953 transitions. Word has length 186 [2020-12-22 09:15:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:48,378 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 953 transitions. [2020-12-22 09:15:48,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:15:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 953 transitions. [2020-12-22 09:15:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 09:15:48,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:48,381 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:48,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:15:48,381 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:48,382 INFO L82 PathProgramCache]: Analyzing trace with hash 476413725, now seen corresponding path program 1 times [2020-12-22 09:15:48,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:48,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853018254] [2020-12-22 09:15:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:15:52,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853018254] [2020-12-22 09:15:52,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:52,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:15:52,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963365379] [2020-12-22 09:15:52,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:15:52,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:52,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:15:52,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:52,960 INFO L87 Difference]: Start difference. First operand 731 states and 953 transitions. Second operand 5 states. [2020-12-22 09:15:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:54,897 INFO L93 Difference]: Finished difference Result 1697 states and 2208 transitions. [2020-12-22 09:15:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:15:54,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-12-22 09:15:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:54,902 INFO L225 Difference]: With dead ends: 1697 [2020-12-22 09:15:54,902 INFO L226 Difference]: Without dead ends: 1035 [2020-12-22 09:15:54,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:15:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-12-22 09:15:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 873. [2020-12-22 09:15:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-12-22 09:15:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1088 transitions. [2020-12-22 09:15:54,936 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1088 transitions. Word has length 188 [2020-12-22 09:15:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:54,936 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1088 transitions. [2020-12-22 09:15:54,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:15:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1088 transitions. [2020-12-22 09:15:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 09:15:54,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:54,940 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:15:54,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:15:54,940 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:54,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1683649313, now seen corresponding path program 1 times [2020-12-22 09:15:54,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:54,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92646338] [2020-12-22 09:15:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:05,881 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-22 09:16:06,213 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 09:16:06,523 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-22 09:16:06,974 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-22 09:16:07,545 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-12-22 09:16:08,014 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2020-12-22 09:16:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92646338] [2020-12-22 09:16:08,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:08,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 09:16:08,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900127801] [2020-12-22 09:16:08,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 09:16:08,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 09:16:08,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:16:08,591 INFO L87 Difference]: Start difference. First operand 873 states and 1088 transitions. Second operand 11 states. [2020-12-22 09:16:08,810 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-22 09:16:11,297 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 09:16:12,011 WARN L197 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 09:16:12,864 WARN L197 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-12-22 09:16:13,513 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-12-22 09:16:13,827 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-22 09:16:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:18,536 INFO L93 Difference]: Finished difference Result 1637 states and 2000 transitions. [2020-12-22 09:16:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:16:18,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2020-12-22 09:16:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:18,548 INFO L225 Difference]: With dead ends: 1637 [2020-12-22 09:16:18,548 INFO L226 Difference]: Without dead ends: 1378 [2020-12-22 09:16:18,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 09:16:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-12-22 09:16:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 873. [2020-12-22 09:16:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-12-22 09:16:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1085 transitions. [2020-12-22 09:16:18,590 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1085 transitions. Word has length 188 [2020-12-22 09:16:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:18,591 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1085 transitions. [2020-12-22 09:16:18,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 09:16:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1085 transitions. [2020-12-22 09:16:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 09:16:18,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:18,595 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:18,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:16:18,595 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash 371596022, now seen corresponding path program 1 times [2020-12-22 09:16:18,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:18,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066514084] [2020-12-22 09:16:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:18,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066514084] [2020-12-22 09:16:18,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:18,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:16:18,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926311490] [2020-12-22 09:16:18,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:16:18,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:18,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:16:18,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:16:18,925 INFO L87 Difference]: Start difference. First operand 873 states and 1085 transitions. Second operand 4 states. [2020-12-22 09:16:21,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:21,216 INFO L93 Difference]: Finished difference Result 1191 states and 1455 transitions. [2020-12-22 09:16:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:16:21,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-12-22 09:16:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:21,221 INFO L225 Difference]: With dead ends: 1191 [2020-12-22 09:16:21,221 INFO L226 Difference]: Without dead ends: 824 [2020-12-22 09:16:21,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:16:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-12-22 09:16:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2020-12-22 09:16:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-12-22 09:16:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1018 transitions. [2020-12-22 09:16:21,258 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1018 transitions. Word has length 198 [2020-12-22 09:16:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:21,258 INFO L481 AbstractCegarLoop]: Abstraction has 822 states and 1018 transitions. [2020-12-22 09:16:21,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:16:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1018 transitions. [2020-12-22 09:16:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 09:16:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:21,262 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:21,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 09:16:21,263 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2060707338, now seen corresponding path program 1 times [2020-12-22 09:16:21,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:21,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739680238] [2020-12-22 09:16:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:21,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739680238] [2020-12-22 09:16:21,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:21,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:16:21,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527319806] [2020-12-22 09:16:21,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:16:21,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:21,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:16:21,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:16:21,575 INFO L87 Difference]: Start difference. First operand 822 states and 1018 transitions. Second operand 4 states. [2020-12-22 09:16:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:23,828 INFO L93 Difference]: Finished difference Result 944 states and 1141 transitions. [2020-12-22 09:16:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:16:23,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-12-22 09:16:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:23,832 INFO L225 Difference]: With dead ends: 944 [2020-12-22 09:16:23,832 INFO L226 Difference]: Without dead ends: 693 [2020-12-22 09:16:23,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:16:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-12-22 09:16:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2020-12-22 09:16:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-12-22 09:16:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 852 transitions. [2020-12-22 09:16:23,864 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 852 transitions. Word has length 198 [2020-12-22 09:16:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:23,864 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 852 transitions. [2020-12-22 09:16:23,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:16:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 852 transitions. [2020-12-22 09:16:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 09:16:23,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:23,867 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:23,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 09:16:23,867 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash 283322422, now seen corresponding path program 1 times [2020-12-22 09:16:23,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:23,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730383965] [2020-12-22 09:16:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:26,076 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 15 [2020-12-22 09:16:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:26,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730383965] [2020-12-22 09:16:26,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:26,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:16:26,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724839861] [2020-12-22 09:16:26,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:16:26,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:26,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:16:26,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:16:26,280 INFO L87 Difference]: Start difference. First operand 693 states and 852 transitions. Second operand 8 states. [2020-12-22 09:16:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:28,873 INFO L93 Difference]: Finished difference Result 1231 states and 1446 transitions. [2020-12-22 09:16:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:16:28,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-12-22 09:16:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:28,881 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 09:16:28,881 INFO L226 Difference]: Without dead ends: 867 [2020-12-22 09:16:28,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:16:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-12-22 09:16:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 597. [2020-12-22 09:16:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-22 09:16:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 723 transitions. [2020-12-22 09:16:28,919 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 723 transitions. Word has length 198 [2020-12-22 09:16:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:28,920 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 723 transitions. [2020-12-22 09:16:28,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:16:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 723 transitions. [2020-12-22 09:16:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 09:16:28,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:28,922 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:28,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 09:16:28,922 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:28,923 INFO L82 PathProgramCache]: Analyzing trace with hash 540545019, now seen corresponding path program 1 times [2020-12-22 09:16:28,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:28,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154322592] [2020-12-22 09:16:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:31,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154322592] [2020-12-22 09:16:31,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:31,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:16:31,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064450152] [2020-12-22 09:16:31,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:16:31,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:31,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:16:31,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:16:31,149 INFO L87 Difference]: Start difference. First operand 597 states and 723 transitions. Second operand 8 states. [2020-12-22 09:16:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:33,581 INFO L93 Difference]: Finished difference Result 1135 states and 1317 transitions. [2020-12-22 09:16:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:16:33,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-12-22 09:16:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:33,585 INFO L225 Difference]: With dead ends: 1135 [2020-12-22 09:16:33,585 INFO L226 Difference]: Without dead ends: 768 [2020-12-22 09:16:33,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:16:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-12-22 09:16:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 498. [2020-12-22 09:16:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-22 09:16:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 591 transitions. [2020-12-22 09:16:33,614 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 591 transitions. Word has length 199 [2020-12-22 09:16:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:33,615 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 591 transitions. [2020-12-22 09:16:33,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:16:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 591 transitions. [2020-12-22 09:16:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 09:16:33,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:33,617 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:33,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 09:16:33,617 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1717518972, now seen corresponding path program 1 times [2020-12-22 09:16:33,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:33,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147185649] [2020-12-22 09:16:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:40,211 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 20 [2020-12-22 09:16:40,373 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2020-12-22 09:16:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:40,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147185649] [2020-12-22 09:16:40,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:40,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:16:40,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43008264] [2020-12-22 09:16:40,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:16:40,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:16:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:16:40,403 INFO L87 Difference]: Start difference. First operand 498 states and 591 transitions. Second operand 6 states. [2020-12-22 09:16:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:42,062 INFO L93 Difference]: Finished difference Result 1215 states and 1415 transitions. [2020-12-22 09:16:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:16:42,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-12-22 09:16:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:42,065 INFO L225 Difference]: With dead ends: 1215 [2020-12-22 09:16:42,065 INFO L226 Difference]: Without dead ends: 847 [2020-12-22 09:16:42,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:16:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-12-22 09:16:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 569. [2020-12-22 09:16:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-12-22 09:16:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 677 transitions. [2020-12-22 09:16:42,111 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 677 transitions. Word has length 199 [2020-12-22 09:16:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:42,111 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 677 transitions. [2020-12-22 09:16:42,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:16:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 677 transitions. [2020-12-22 09:16:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 09:16:42,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:42,114 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:42,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 09:16:42,114 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash 159544258, now seen corresponding path program 1 times [2020-12-22 09:16:42,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:42,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565658525] [2020-12-22 09:16:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:49,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565658525] [2020-12-22 09:16:49,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:49,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 09:16:49,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122696884] [2020-12-22 09:16:49,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:16:49,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:49,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:16:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:16:49,622 INFO L87 Difference]: Start difference. First operand 569 states and 677 transitions. Second operand 10 states. [2020-12-22 09:16:51,926 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2020-12-22 09:16:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:53,244 INFO L93 Difference]: Finished difference Result 932 states and 1080 transitions. [2020-12-22 09:16:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:16:53,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-12-22 09:16:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:53,247 INFO L225 Difference]: With dead ends: 932 [2020-12-22 09:16:53,247 INFO L226 Difference]: Without dead ends: 828 [2020-12-22 09:16:53,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:16:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-12-22 09:16:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 602. [2020-12-22 09:16:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-12-22 09:16:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 718 transitions. [2020-12-22 09:16:53,292 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 718 transitions. Word has length 199 [2020-12-22 09:16:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:53,292 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 718 transitions. [2020-12-22 09:16:53,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:16:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 718 transitions. [2020-12-22 09:16:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 09:16:53,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:53,295 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:53,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 09:16:53,295 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash -924945767, now seen corresponding path program 1 times [2020-12-22 09:16:53,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:53,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824055146] [2020-12-22 09:16:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:16:56,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824055146] [2020-12-22 09:16:56,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:56,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:16:56,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343146293] [2020-12-22 09:16:56,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:16:56,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:56,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:16:56,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:16:56,107 INFO L87 Difference]: Start difference. First operand 602 states and 718 transitions. Second operand 7 states. [2020-12-22 09:16:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:58,617 INFO L93 Difference]: Finished difference Result 963 states and 1082 transitions. [2020-12-22 09:16:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:16:58,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-12-22 09:16:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:58,622 INFO L225 Difference]: With dead ends: 963 [2020-12-22 09:16:58,622 INFO L226 Difference]: Without dead ends: 706 [2020-12-22 09:16:58,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:16:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-12-22 09:16:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 477. [2020-12-22 09:16:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-22 09:16:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 555 transitions. [2020-12-22 09:16:58,661 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 555 transitions. Word has length 209 [2020-12-22 09:16:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:58,661 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 555 transitions. [2020-12-22 09:16:58,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:16:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 555 transitions. [2020-12-22 09:16:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-22 09:16:58,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:58,663 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:16:58,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 09:16:58,663 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:58,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1794765588, now seen corresponding path program 1 times [2020-12-22 09:16:58,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:58,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597794474] [2020-12-22 09:16:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:17:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:17:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-12-22 09:17:05,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597794474] [2020-12-22 09:17:05,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:17:05,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:17:05,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519319779] [2020-12-22 09:17:05,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:17:05,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:17:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:17:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:17:05,242 INFO L87 Difference]: Start difference. First operand 477 states and 555 transitions. Second operand 5 states. [2020-12-22 09:17:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:17:06,204 INFO L93 Difference]: Finished difference Result 865 states and 981 transitions. [2020-12-22 09:17:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:17:06,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-12-22 09:17:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:17:06,208 INFO L225 Difference]: With dead ends: 865 [2020-12-22 09:17:06,208 INFO L226 Difference]: Without dead ends: 550 [2020-12-22 09:17:06,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:17:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-12-22 09:17:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 435. [2020-12-22 09:17:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-22 09:17:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 476 transitions. [2020-12-22 09:17:06,244 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 476 transitions. Word has length 210 [2020-12-22 09:17:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:17:06,244 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 476 transitions. [2020-12-22 09:17:06,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:17:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 476 transitions. [2020-12-22 09:17:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-22 09:17:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:17:06,246 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:17:06,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 09:17:06,246 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:17:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:17:06,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1875920492, now seen corresponding path program 1 times [2020-12-22 09:17:06,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:17:06,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131089591] [2020-12-22 09:17:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY