/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/ntdrivers/diskperf.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:18:06,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:18:06,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:18:06,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:18:06,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:18:06,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:18:06,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:18:06,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:18:06,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:18:06,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:18:06,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:18:06,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:18:06,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:18:06,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:18:06,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:18:06,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:18:06,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:18:06,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:18:06,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:18:06,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:18:06,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:18:06,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:18:06,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:18:06,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:18:06,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-21 23:18:06,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-21 23:18:06,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-21 23:18:06,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-21 23:18:06,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-21 23:18:06,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-21 23:18:06,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:18:06,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:18:06,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:18:06,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:18:06,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:18:06,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:18:06,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:18:06,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:18:06,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:18:06,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:18:06,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:18:06,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:18:06,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:18:06,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:18:06,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:18:06,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:18:06,575 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:18:06,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:18:06,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:18:06,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:18:06,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:18:06,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:18:06,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:18:06,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:18:06,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:18:06,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:18:06,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:18:06,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:18:06,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:18:06,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:18:06,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:18:06,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:18:06,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:18:06,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:18:06,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:18:06,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:18:06,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:18:06,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:18:07,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:18:07,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:18:07,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:18:07,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:18:07,042 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:18:07,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2020-12-21 23:18:07,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d088d2ab/13d83eeccbb34ee0a6ae72275d95b2c8/FLAG1647f19d8 [2020-12-21 23:18:08,245 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:18:08,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2020-12-21 23:18:08,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d088d2ab/13d83eeccbb34ee0a6ae72275d95b2c8/FLAG1647f19d8 [2020-12-21 23:18:08,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d088d2ab/13d83eeccbb34ee0a6ae72275d95b2c8 [2020-12-21 23:18:08,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:18:08,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:18:08,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:18:08,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:18:08,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:18:08,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:18:08" (1/1) ... [2020-12-21 23:18:08,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e602df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:08, skipping insertion in model container [2020-12-21 23:18:08,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:18:08" (1/1) ... [2020-12-21 23:18:08,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:18:08,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:18:09,637 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/ntdrivers/diskperf.i.cil-1.c[84613,84626] [2020-12-21 23:18:09,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:18:10,054 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:18:10,180 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/ntdrivers/diskperf.i.cil-1.c[84613,84626] [2020-12-21 23:18:10,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:18:10,710 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:18:10,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10 WrapperNode [2020-12-21 23:18:10,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:18:10,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:18:10,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:18:10,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:18:10,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:10,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:18:11,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:18:11,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:18:11,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:18:11,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (1/1) ... [2020-12-21 23:18:11,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:18:11,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:18:11,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:18:11,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:18:11,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (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 [2020-12-21 23:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-21 23:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-21 23:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-21 23:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-21 23:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-21 23:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-21 23:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-21 23:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-21 23:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-21 23:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-21 23:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-21 23:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:18:11,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:18:12,895 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,914 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,916 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,922 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,924 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,925 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,931 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,933 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,936 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,941 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,943 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,945 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,952 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,954 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,958 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,966 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,967 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,975 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,976 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,981 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,985 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:18:12,990 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:19:06,217 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##650: assume false; [2020-12-21 23:19:06,217 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##651: assume !false; [2020-12-21 23:19:06,217 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##681: assume !false; [2020-12-21 23:19:06,217 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##680: assume false; [2020-12-21 23:19:06,218 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##298: assume false; [2020-12-21 23:19:06,218 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##299: assume !false; [2020-12-21 23:19:06,218 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##205: assume !false; [2020-12-21 23:19:06,218 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume false; [2020-12-21 23:19:06,219 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2020-12-21 23:19:06,219 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2020-12-21 23:19:06,219 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume false; [2020-12-21 23:19:06,219 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##240: assume !false; [2020-12-21 23:19:06,219 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##328: assume false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##329: assume !false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##359: assume false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##360: assume !false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##895: assume !false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##894: assume false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##419: assume !false; [2020-12-21 23:19:06,220 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##418: assume false; [2020-12-21 23:19:06,221 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##844: assume !false; [2020-12-21 23:19:06,221 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##843: assume false; [2020-12-21 23:19:06,221 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##814: assume !false; [2020-12-21 23:19:06,221 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##813: assume false; [2020-12-21 23:19:06,223 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1012: assume false; [2020-12-21 23:19:06,223 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1013: assume !false; [2020-12-21 23:19:06,223 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##449: assume !false; [2020-12-21 23:19:06,223 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##448: assume false; [2020-12-21 23:19:06,223 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##470: assume false; [2020-12-21 23:19:06,224 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##471: assume !false; [2020-12-21 23:19:06,224 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##529: assume false; [2020-12-21 23:19:06,224 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume !false; [2020-12-21 23:19:06,225 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##559: assume false; [2020-12-21 23:19:06,225 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##560: assume !false; [2020-12-21 23:19:06,226 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##957: assume !false; [2020-12-21 23:19:06,226 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##956: assume false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume !false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##128: assume false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##147: assume !false; [2020-12-21 23:19:06,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##146: assume false; [2020-12-21 23:19:06,228 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##591: assume false; [2020-12-21 23:19:06,228 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##592: assume !false; [2020-12-21 23:19:06,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:19:06,262 INFO L299 CfgBuilder]: Removed 457 assume(true) statements. [2020-12-21 23:19:06,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:19:06 BoogieIcfgContainer [2020-12-21 23:19:06,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:19:06,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:19:06,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:19:06,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:19:06,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:18:08" (1/3) ... [2020-12-21 23:19:06,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa8c6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:19:06, skipping insertion in model container [2020-12-21 23:19:06,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:18:10" (2/3) ... [2020-12-21 23:19:06,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa8c6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:19:06, skipping insertion in model container [2020-12-21 23:19:06,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:19:06" (3/3) ... [2020-12-21 23:19:06,279 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf.i.cil-1.c [2020-12-21 23:19:06,286 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:19:06,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 51 error locations. [2020-12-21 23:19:06,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2020-12-21 23:19:06,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:19:06,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:19:06,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:19:06,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:19:06,370 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:19:06,371 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:19:06,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:19:06,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:19:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states. [2020-12-21 23:19:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-21 23:19:06,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:06,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:19:06,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1843616715, now seen corresponding path program 1 times [2020-12-21 23:19:06,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:06,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734909990] [2020-12-21 23:19:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:19:07,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734909990] [2020-12-21 23:19:07,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:07,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:19:07,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514383689] [2020-12-21 23:19:07,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-21 23:19:07,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-21 23:19:07,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-21 23:19:07,440 INFO L87 Difference]: Start difference. First operand 790 states. Second operand 2 states. [2020-12-21 23:19:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:07,556 INFO L93 Difference]: Finished difference Result 1576 states and 2321 transitions. [2020-12-21 23:19:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-21 23:19:07,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-21 23:19:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:07,583 INFO L225 Difference]: With dead ends: 1576 [2020-12-21 23:19:07,584 INFO L226 Difference]: Without dead ends: 785 [2020-12-21 23:19:07,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-21 23:19:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-12-21 23:19:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-12-21 23:19:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-12-21 23:19:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1079 transitions. [2020-12-21 23:19:07,700 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1079 transitions. Word has length 14 [2020-12-21 23:19:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:07,700 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 1079 transitions. [2020-12-21 23:19:07,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-21 23:19:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1079 transitions. [2020-12-21 23:19:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-21 23:19:07,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:07,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:19:07,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:19:07,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1968990969, now seen corresponding path program 1 times [2020-12-21 23:19:07,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:07,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051523301] [2020-12-21 23:19:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:19:08,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051523301] [2020-12-21 23:19:08,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:08,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:19:08,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187580172] [2020-12-21 23:19:08,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:19:08,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:08,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:19:08,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:19:08,340 INFO L87 Difference]: Start difference. First operand 785 states and 1079 transitions. Second operand 4 states. [2020-12-21 23:19:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:08,488 INFO L93 Difference]: Finished difference Result 1572 states and 2161 transitions. [2020-12-21 23:19:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:19:08,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-21 23:19:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:08,495 INFO L225 Difference]: With dead ends: 1572 [2020-12-21 23:19:08,495 INFO L226 Difference]: Without dead ends: 791 [2020-12-21 23:19:08,498 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 [2020-12-21 23:19:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-12-21 23:19:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-12-21 23:19:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-12-21 23:19:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1083 transitions. [2020-12-21 23:19:08,543 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1083 transitions. Word has length 16 [2020-12-21 23:19:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:08,544 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1083 transitions. [2020-12-21 23:19:08,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:19:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1083 transitions. [2020-12-21 23:19:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:19:08,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:08,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:19:08,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:19:08,547 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:08,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:08,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2025790375, now seen corresponding path program 1 times [2020-12-21 23:19:08,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:08,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512779789] [2020-12-21 23:19:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:10,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512779789] [2020-12-21 23:19:10,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:10,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:10,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108930967] [2020-12-21 23:19:10,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:10,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:10,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:10,657 INFO L87 Difference]: Start difference. First operand 789 states and 1083 transitions. Second operand 3 states. [2020-12-21 23:19:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:13,631 INFO L93 Difference]: Finished difference Result 1658 states and 2296 transitions. [2020-12-21 23:19:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:13,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:19:13,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:13,638 INFO L225 Difference]: With dead ends: 1658 [2020-12-21 23:19:13,639 INFO L226 Difference]: Without dead ends: 1187 [2020-12-21 23:19:13,641 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 [2020-12-21 23:19:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-12-21 23:19:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1147. [2020-12-21 23:19:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-21 23:19:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1607 transitions. [2020-12-21 23:19:13,682 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1607 transitions. Word has length 20 [2020-12-21 23:19:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:13,683 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1607 transitions. [2020-12-21 23:19:13,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1607 transitions. [2020-12-21 23:19:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:19:13,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:13,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:19:13,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:19:13,685 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash 757901700, now seen corresponding path program 1 times [2020-12-21 23:19:13,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:13,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719047172] [2020-12-21 23:19:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:15,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719047172] [2020-12-21 23:19:15,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:15,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104716648] [2020-12-21 23:19:15,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:15,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:15,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:15,385 INFO L87 Difference]: Start difference. First operand 1147 states and 1607 transitions. Second operand 3 states. [2020-12-21 23:19:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:16,068 INFO L93 Difference]: Finished difference Result 1169 states and 1632 transitions. [2020-12-21 23:19:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:16,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:19:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:16,075 INFO L225 Difference]: With dead ends: 1169 [2020-12-21 23:19:16,075 INFO L226 Difference]: Without dead ends: 1147 [2020-12-21 23:19:16,077 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 [2020-12-21 23:19:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-12-21 23:19:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-12-21 23:19:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-21 23:19:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1606 transitions. [2020-12-21 23:19:16,117 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1606 transitions. Word has length 21 [2020-12-21 23:19:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:16,117 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1606 transitions. [2020-12-21 23:19:16,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1606 transitions. [2020-12-21 23:19:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 23:19:16,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:16,127 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] [2020-12-21 23:19:16,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:19:16,127 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:16,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1534755551, now seen corresponding path program 1 times [2020-12-21 23:19:16,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:16,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370206618] [2020-12-21 23:19:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:17,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370206618] [2020-12-21 23:19:17,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:17,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:17,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926978674] [2020-12-21 23:19:17,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:17,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:17,609 INFO L87 Difference]: Start difference. First operand 1147 states and 1606 transitions. Second operand 3 states. [2020-12-21 23:19:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:17,871 INFO L93 Difference]: Finished difference Result 2422 states and 3410 transitions. [2020-12-21 23:19:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:17,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-21 23:19:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:17,881 INFO L225 Difference]: With dead ends: 2422 [2020-12-21 23:19:17,882 INFO L226 Difference]: Without dead ends: 1559 [2020-12-21 23:19:17,884 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 [2020-12-21 23:19:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-12-21 23:19:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1220. [2020-12-21 23:19:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-12-21 23:19:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1725 transitions. [2020-12-21 23:19:17,933 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1725 transitions. Word has length 29 [2020-12-21 23:19:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:17,933 INFO L481 AbstractCegarLoop]: Abstraction has 1220 states and 1725 transitions. [2020-12-21 23:19:17,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1725 transitions. [2020-12-21 23:19:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:19:17,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:17,935 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] [2020-12-21 23:19:17,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:19:17,936 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2037722325, now seen corresponding path program 1 times [2020-12-21 23:19:17,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:17,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908218726] [2020-12-21 23:19:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:19,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908218726] [2020-12-21 23:19:19,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:19,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:19,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283515078] [2020-12-21 23:19:19,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:19,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:19,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:19,361 INFO L87 Difference]: Start difference. First operand 1220 states and 1725 transitions. Second operand 3 states. [2020-12-21 23:19:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:22,036 INFO L93 Difference]: Finished difference Result 1242 states and 1752 transitions. [2020-12-21 23:19:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:22,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:19:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:22,044 INFO L225 Difference]: With dead ends: 1242 [2020-12-21 23:19:22,044 INFO L226 Difference]: Without dead ends: 1237 [2020-12-21 23:19:22,045 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 [2020-12-21 23:19:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-12-21 23:19:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1234. [2020-12-21 23:19:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-12-21 23:19:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1745 transitions. [2020-12-21 23:19:22,085 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1745 transitions. Word has length 30 [2020-12-21 23:19:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:22,085 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1745 transitions. [2020-12-21 23:19:22,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1745 transitions. [2020-12-21 23:19:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:19:22,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:22,087 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] [2020-12-21 23:19:22,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:19:22,087 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2038277430, now seen corresponding path program 1 times [2020-12-21 23:19:22,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:22,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312126648] [2020-12-21 23:19:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:23,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312126648] [2020-12-21 23:19:23,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:23,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:19:23,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636230703] [2020-12-21 23:19:23,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:19:23,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:23,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:19:23,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:19:23,283 INFO L87 Difference]: Start difference. First operand 1234 states and 1745 transitions. Second operand 4 states. [2020-12-21 23:19:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:24,236 INFO L93 Difference]: Finished difference Result 1250 states and 1760 transitions. [2020-12-21 23:19:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:19:24,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-21 23:19:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:24,244 INFO L225 Difference]: With dead ends: 1250 [2020-12-21 23:19:24,244 INFO L226 Difference]: Without dead ends: 1242 [2020-12-21 23:19:24,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:19:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-12-21 23:19:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1234. [2020-12-21 23:19:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-12-21 23:19:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1744 transitions. [2020-12-21 23:19:24,298 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1744 transitions. Word has length 30 [2020-12-21 23:19:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:24,298 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1744 transitions. [2020-12-21 23:19:24,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:19:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1744 transitions. [2020-12-21 23:19:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:19:24,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:24,300 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] [2020-12-21 23:19:24,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:19:24,301 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1927004236, now seen corresponding path program 1 times [2020-12-21 23:19:24,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:24,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332764371] [2020-12-21 23:19:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:25,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332764371] [2020-12-21 23:19:25,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:25,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:25,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397335097] [2020-12-21 23:19:25,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:25,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:25,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:25,674 INFO L87 Difference]: Start difference. First operand 1234 states and 1744 transitions. Second operand 3 states. [2020-12-21 23:19:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:28,363 INFO L93 Difference]: Finished difference Result 1234 states and 1744 transitions. [2020-12-21 23:19:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:28,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:19:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:28,370 INFO L225 Difference]: With dead ends: 1234 [2020-12-21 23:19:28,371 INFO L226 Difference]: Without dead ends: 1230 [2020-12-21 23:19:28,372 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 [2020-12-21 23:19:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-12-21 23:19:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2020-12-21 23:19:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-12-21 23:19:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1740 transitions. [2020-12-21 23:19:28,419 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1740 transitions. Word has length 30 [2020-12-21 23:19:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:28,419 INFO L481 AbstractCegarLoop]: Abstraction has 1230 states and 1740 transitions. [2020-12-21 23:19:28,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1740 transitions. [2020-12-21 23:19:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-21 23:19:28,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:28,421 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] [2020-12-21 23:19:28,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:19:28,421 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:28,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1254741054, now seen corresponding path program 1 times [2020-12-21 23:19:28,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:28,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805895347] [2020-12-21 23:19:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:29,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805895347] [2020-12-21 23:19:29,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:29,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:19:29,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858665149] [2020-12-21 23:19:29,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:19:29,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:29,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:19:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:19:29,593 INFO L87 Difference]: Start difference. First operand 1230 states and 1740 transitions. Second operand 4 states. [2020-12-21 23:19:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:30,706 INFO L93 Difference]: Finished difference Result 1241 states and 1749 transitions. [2020-12-21 23:19:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:19:30,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-21 23:19:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:30,715 INFO L225 Difference]: With dead ends: 1241 [2020-12-21 23:19:30,715 INFO L226 Difference]: Without dead ends: 1233 [2020-12-21 23:19:30,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:19:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-12-21 23:19:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1230. [2020-12-21 23:19:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-12-21 23:19:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1739 transitions. [2020-12-21 23:19:30,778 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1739 transitions. Word has length 31 [2020-12-21 23:19:30,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:30,778 INFO L481 AbstractCegarLoop]: Abstraction has 1230 states and 1739 transitions. [2020-12-21 23:19:30,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:19:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1739 transitions. [2020-12-21 23:19:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:19:30,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:30,780 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] [2020-12-21 23:19:30,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:19:30,781 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash -253647201, now seen corresponding path program 1 times [2020-12-21 23:19:30,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:30,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136541824] [2020-12-21 23:19:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136541824] [2020-12-21 23:19:32,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:32,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:32,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981266145] [2020-12-21 23:19:32,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:32,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:32,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:32,218 INFO L87 Difference]: Start difference. First operand 1230 states and 1739 transitions. Second operand 3 states. [2020-12-21 23:19:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:32,502 INFO L93 Difference]: Finished difference Result 2217 states and 3154 transitions. [2020-12-21 23:19:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:32,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-21 23:19:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:32,513 INFO L225 Difference]: With dead ends: 2217 [2020-12-21 23:19:32,514 INFO L226 Difference]: Without dead ends: 2186 [2020-12-21 23:19:32,515 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 [2020-12-21 23:19:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-12-21 23:19:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2125. [2020-12-21 23:19:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2125 states. [2020-12-21 23:19:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3065 transitions. [2020-12-21 23:19:32,610 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3065 transitions. Word has length 32 [2020-12-21 23:19:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:32,610 INFO L481 AbstractCegarLoop]: Abstraction has 2125 states and 3065 transitions. [2020-12-21 23:19:32,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3065 transitions. [2020-12-21 23:19:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-21 23:19:32,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:32,611 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] [2020-12-21 23:19:32,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:19:32,612 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:32,613 INFO L82 PathProgramCache]: Analyzing trace with hash 727243719, now seen corresponding path program 1 times [2020-12-21 23:19:32,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:32,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451120301] [2020-12-21 23:19:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:33,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451120301] [2020-12-21 23:19:33,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:33,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:19:33,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501153121] [2020-12-21 23:19:33,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:19:33,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:19:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:19:33,974 INFO L87 Difference]: Start difference. First operand 2125 states and 3065 transitions. Second operand 4 states. [2020-12-21 23:19:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:36,241 INFO L93 Difference]: Finished difference Result 2138 states and 3078 transitions. [2020-12-21 23:19:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:19:36,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-21 23:19:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:36,254 INFO L225 Difference]: With dead ends: 2138 [2020-12-21 23:19:36,254 INFO L226 Difference]: Without dead ends: 2121 [2020-12-21 23:19:36,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:19:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2020-12-21 23:19:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2121. [2020-12-21 23:19:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-12-21 23:19:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 3060 transitions. [2020-12-21 23:19:36,454 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 3060 transitions. Word has length 33 [2020-12-21 23:19:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:36,455 INFO L481 AbstractCegarLoop]: Abstraction has 2121 states and 3060 transitions. [2020-12-21 23:19:36,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:19:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 3060 transitions. [2020-12-21 23:19:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-21 23:19:36,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:36,458 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] [2020-12-21 23:19:36,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-21 23:19:36,459 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:36,460 INFO L82 PathProgramCache]: Analyzing trace with hash -525937751, now seen corresponding path program 1 times [2020-12-21 23:19:36,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:36,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410465671] [2020-12-21 23:19:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:37,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410465671] [2020-12-21 23:19:37,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:37,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:19:37,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127503172] [2020-12-21 23:19:37,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:19:37,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:37,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:19:37,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:19:37,804 INFO L87 Difference]: Start difference. First operand 2121 states and 3060 transitions. Second operand 3 states. [2020-12-21 23:19:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:40,720 INFO L93 Difference]: Finished difference Result 3073 states and 4447 transitions. [2020-12-21 23:19:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:19:40,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-21 23:19:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:40,735 INFO L225 Difference]: With dead ends: 3073 [2020-12-21 23:19:40,735 INFO L226 Difference]: Without dead ends: 3065 [2020-12-21 23:19:40,737 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 [2020-12-21 23:19:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2020-12-21 23:19:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2135. [2020-12-21 23:19:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-12-21 23:19:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3076 transitions. [2020-12-21 23:19:40,835 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3076 transitions. Word has length 36 [2020-12-21 23:19:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:40,835 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3076 transitions. [2020-12-21 23:19:40,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:19:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3076 transitions. [2020-12-21 23:19:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:19:40,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:40,837 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] [2020-12-21 23:19:40,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-21 23:19:40,837 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash 507594731, now seen corresponding path program 1 times [2020-12-21 23:19:40,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:40,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863889808] [2020-12-21 23:19:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863889808] [2020-12-21 23:19:41,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:41,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-21 23:19:41,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443464049] [2020-12-21 23:19:41,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 23:19:41,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:41,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 23:19:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:19:41,938 INFO L87 Difference]: Start difference. First operand 2135 states and 3076 transitions. Second operand 5 states. [2020-12-21 23:19:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:44,303 INFO L93 Difference]: Finished difference Result 2160 states and 3102 transitions. [2020-12-21 23:19:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-21 23:19:44,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-21 23:19:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:44,316 INFO L225 Difference]: With dead ends: 2160 [2020-12-21 23:19:44,316 INFO L226 Difference]: Without dead ends: 2104 [2020-12-21 23:19:44,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-21 23:19:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-12-21 23:19:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2020-12-21 23:19:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2020-12-21 23:19:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3033 transitions. [2020-12-21 23:19:44,498 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3033 transitions. Word has length 37 [2020-12-21 23:19:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:44,499 INFO L481 AbstractCegarLoop]: Abstraction has 2104 states and 3033 transitions. [2020-12-21 23:19:44,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 23:19:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3033 transitions. [2020-12-21 23:19:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:19:44,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:44,501 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] [2020-12-21 23:19:44,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-21 23:19:44,502 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash 893391432, now seen corresponding path program 1 times [2020-12-21 23:19:44,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:44,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948582664] [2020-12-21 23:19:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-21 23:19:45,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948582664] [2020-12-21 23:19:45,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:19:45,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:19:45,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245318250] [2020-12-21 23:19:45,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:19:45,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:19:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:19:45,742 INFO L87 Difference]: Start difference. First operand 2104 states and 3033 transitions. Second operand 4 states. [2020-12-21 23:19:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:46,898 INFO L93 Difference]: Finished difference Result 3042 states and 4403 transitions. [2020-12-21 23:19:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:19:46,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-21 23:19:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:46,921 INFO L225 Difference]: With dead ends: 3042 [2020-12-21 23:19:46,922 INFO L226 Difference]: Without dead ends: 3034 [2020-12-21 23:19:46,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:19:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-12-21 23:19:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2104. [2020-12-21 23:19:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2020-12-21 23:19:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3032 transitions. [2020-12-21 23:19:47,041 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3032 transitions. Word has length 37 [2020-12-21 23:19:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:47,042 INFO L481 AbstractCegarLoop]: Abstraction has 2104 states and 3032 transitions. [2020-12-21 23:19:47,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:19:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3032 transitions. [2020-12-21 23:19:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-21 23:19:47,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:47,043 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] [2020-12-21 23:19:47,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-21 23:19:47,044 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:47,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1392012132, now seen corresponding path program 1 times [2020-12-21 23:19:47,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:47,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484701429] [2020-12-21 23:19:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 23:19:48,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484701429] [2020-12-21 23:19:48,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601431119] [2020-12-21 23:19:48,193 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 [2020-12-21 23:19:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:49,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2301 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 23:19:49,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:19:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 23:19:49,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 23:19:49,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-21 23:19:49,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618998737] [2020-12-21 23:19:49,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 23:19:49,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:19:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 23:19:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 23:19:49,816 INFO L87 Difference]: Start difference. First operand 2104 states and 3032 transitions. Second operand 6 states. [2020-12-21 23:19:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:19:50,139 INFO L93 Difference]: Finished difference Result 4208 states and 6065 transitions. [2020-12-21 23:19:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:19:50,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-12-21 23:19:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:19:50,169 INFO L225 Difference]: With dead ends: 4208 [2020-12-21 23:19:50,170 INFO L226 Difference]: Without dead ends: 2110 [2020-12-21 23:19:50,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 23:19:50,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-12-21 23:19:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2108. [2020-12-21 23:19:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-12-21 23:19:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3036 transitions. [2020-12-21 23:19:50,325 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3036 transitions. Word has length 38 [2020-12-21 23:19:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:19:50,326 INFO L481 AbstractCegarLoop]: Abstraction has 2108 states and 3036 transitions. [2020-12-21 23:19:50,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 23:19:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3036 transitions. [2020-12-21 23:19:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-21 23:19:50,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:19:50,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-21 23:19:50,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-21 23:19:50,543 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:19:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:19:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1128282692, now seen corresponding path program 2 times [2020-12-21 23:19:50,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:19:50,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692179664] [2020-12-21 23:19:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:19:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:19:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-21 23:19:51,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692179664] [2020-12-21 23:19:51,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368324115] [2020-12-21 23:19:51,902 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 [2020-12-21 23:20:50,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-21 23:20:50,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 23:20:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-21 23:20:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:20:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-21 23:20:50,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:20:50,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2020-12-21 23:20:50,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549292409] [2020-12-21 23:20:50,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:20:50,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:20:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:20:50,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:20:50,733 INFO L87 Difference]: Start difference. First operand 2108 states and 3036 transitions. Second operand 7 states. [2020-12-21 23:21:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:21:00,670 INFO L93 Difference]: Finished difference Result 5258 states and 7609 transitions. [2020-12-21 23:21:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 23:21:00,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-12-21 23:21:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:21:00,681 INFO L225 Difference]: With dead ends: 5258 [2020-12-21 23:21:00,681 INFO L226 Difference]: Without dead ends: 3450 [2020-12-21 23:21:00,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-21 23:21:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2020-12-21 23:21:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 2164. [2020-12-21 23:21:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2020-12-21 23:21:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3129 transitions. [2020-12-21 23:21:00,855 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3129 transitions. Word has length 42 [2020-12-21 23:21:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:21:00,855 INFO L481 AbstractCegarLoop]: Abstraction has 2164 states and 3129 transitions. [2020-12-21 23:21:00,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:21:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3129 transitions. [2020-12-21 23:21:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-21 23:21:00,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:21:00,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2020-12-21 23:21:01,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-21 23:21:01,070 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:21:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:21:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1822771770, now seen corresponding path program 1 times [2020-12-21 23:21:01,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:21:01,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611854386] [2020-12-21 23:21:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:21:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:21:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-21 23:21:02,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611854386] [2020-12-21 23:21:02,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833973620] [2020-12-21 23:21:02,335 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 [2020-12-21 23:21:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:21:03,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-21 23:21:03,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:21:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-21 23:21:03,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 23:21:03,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-21 23:21:03,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949473630] [2020-12-21 23:21:03,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:21:03,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:21:03,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:21:03,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:21:03,674 INFO L87 Difference]: Start difference. First operand 2164 states and 3129 transitions. Second operand 7 states. [2020-12-21 23:21:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:21:04,052 INFO L93 Difference]: Finished difference Result 4325 states and 6256 transitions. [2020-12-21 23:21:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 23:21:04,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-12-21 23:21:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:21:04,059 INFO L225 Difference]: With dead ends: 4325 [2020-12-21 23:21:04,059 INFO L226 Difference]: Without dead ends: 2169 [2020-12-21 23:21:04,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:21:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2020-12-21 23:21:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2168. [2020-12-21 23:21:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2168 states. [2020-12-21 23:21:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3133 transitions. [2020-12-21 23:21:04,210 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3133 transitions. Word has length 43 [2020-12-21 23:21:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:21:04,210 INFO L481 AbstractCegarLoop]: Abstraction has 2168 states and 3133 transitions. [2020-12-21 23:21:04,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:21:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3133 transitions. [2020-12-21 23:21:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-21 23:21:04,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:21:04,212 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-21 23:21:04,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-21 23:21:04,428 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:21:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:21:04,429 INFO L82 PathProgramCache]: Analyzing trace with hash -268458650, now seen corresponding path program 2 times [2020-12-21 23:21:04,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:21:04,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910993749] [2020-12-21 23:21:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:21:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:21:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-21 23:21:05,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910993749] [2020-12-21 23:21:05,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9013540] [2020-12-21 23:21:05,711 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