/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:16:50,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:16:50,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:16:50,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:16:50,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:16:50,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:16:50,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:16:50,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:16:50,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:16:50,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:16:50,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:16:50,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:16:50,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:16:50,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:16:50,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:16:50,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:16:50,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:16:50,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:16:50,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:16:50,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:16:50,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:16:50,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:16:50,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:16:50,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:16:50,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:16:50,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:16:50,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:16:50,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:16:50,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:16:50,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:16:50,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:16:50,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:16:50,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:16:50,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:16:50,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:16:50,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:16:50,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:16:50,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:16:50,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:16:50,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:16:50,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:16:50,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:16:50,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:16:50,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:16:50,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:16:50,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:16:50,535 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:16:50,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:16:50,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:16:50,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:16:50,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:16:50,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:16:50,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:16:50,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:16:50,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:16:50,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:16:50,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:16:50,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:16:50,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:16:50,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:16:50,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:16:50,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:16:50,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:16:50,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:16:50,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:16:50,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:16:50,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:16:50,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:16:50,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:16:50,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:16:50,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:16:50,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:16:50,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:16:50,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:16:50,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:16:50,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:16:50,853 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:16:50,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 16:16:50,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf3c7dd1/de567d01e6e74626bbeb24c07a5c2ec7/FLAG79e98fbf4 [2020-08-18 16:16:51,437 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:16:51,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 16:16:51,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf3c7dd1/de567d01e6e74626bbeb24c07a5c2ec7/FLAG79e98fbf4 [2020-08-18 16:16:51,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bf3c7dd1/de567d01e6e74626bbeb24c07a5c2ec7 [2020-08-18 16:16:51,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:16:51,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:16:51,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:16:51,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:16:51,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:16:51,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:16:51" (1/1) ... [2020-08-18 16:16:51,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:51, skipping insertion in model container [2020-08-18 16:16:51,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:16:51" (1/1) ... [2020-08-18 16:16:51,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:16:51,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:16:52,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:16:52,134 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:16:52,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:16:52,331 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:16:52,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52 WrapperNode [2020-08-18 16:16:52,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:16:52,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:16:52,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:16:52,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:16:52,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... [2020-08-18 16:16:52,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:16:52,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:16:52,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:16:52,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:16:52,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 16:16:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:16:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:16:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-18 16:16:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-18 16:16:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-18 16:16:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:16:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-18 16:16:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-18 16:16:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-18 16:16:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-18 16:16:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-18 16:16:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-18 16:16:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-18 16:16:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:16:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 16:16:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-18 16:16:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-18 16:16:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:16:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:16:52,742 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:52,814 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-18 16:16:52,815 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-18 16:16:52,848 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:53,010 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-18 16:16:53,011 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-18 16:16:53,013 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:53,057 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 16:16:53,057 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 16:16:53,067 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:53,106 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 16:16:53,106 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 16:16:53,227 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:53,262 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-18 16:16:53,262 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-18 16:16:53,307 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 16:16:53,451 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-18 16:16:53,451 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-18 16:16:53,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:16:53,481 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 16:16:53,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:16:53 BoogieIcfgContainer [2020-08-18 16:16:53,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:16:53,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:16:53,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:16:53,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:16:53,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:16:51" (1/3) ... [2020-08-18 16:16:53,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:16:53, skipping insertion in model container [2020-08-18 16:16:53,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:16:52" (2/3) ... [2020-08-18 16:16:53,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:16:53, skipping insertion in model container [2020-08-18 16:16:53,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:16:53" (3/3) ... [2020-08-18 16:16:53,504 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-18 16:16:53,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:16:53,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:16:53,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:16:53,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:16:53,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:16:53,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:16:53,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:16:53,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:16:53,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:16:53,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:16:53,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:16:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-18 16:16:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 16:16:53,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:16:53,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:16:53,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:16:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:16:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-18 16:16:53,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:16:53,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776893274] [2020-08-18 16:16:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:16:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:16:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:16:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:16:54,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776893274] [2020-08-18 16:16:54,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:16:54,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:16:54,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006001061] [2020-08-18 16:16:54,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:16:54,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:16:54,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:16:54,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:16:54,076 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-18 16:16:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:16:55,122 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-18 16:16:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:16:55,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 16:16:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:16:55,142 INFO L225 Difference]: With dead ends: 418 [2020-08-18 16:16:55,142 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 16:16:55,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:16:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 16:16:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-18 16:16:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-18 16:16:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-18 16:16:55,232 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-18 16:16:55,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:16:55,233 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-18 16:16:55,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:16:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-18 16:16:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:16:55,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:16:55,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:16:55,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:16:55,236 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:16:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:16:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-18 16:16:55,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:16:55,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692628571] [2020-08-18 16:16:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:16:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:16:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:16:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:16:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:16:55,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692628571] [2020-08-18 16:16:55,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:16:55,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:16:55,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127436958] [2020-08-18 16:16:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:16:55,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:16:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:16:55,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:16:55,502 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-18 16:16:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:16:56,803 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-18 16:16:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:16:56,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 16:16:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:16:56,810 INFO L225 Difference]: With dead ends: 410 [2020-08-18 16:16:56,810 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 16:16:56,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:16:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 16:16:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-18 16:16:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 16:16:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-18 16:16:56,852 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-18 16:16:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:16:56,852 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-18 16:16:56,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:16:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-18 16:16:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:16:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:16:56,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:16:56,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:16:56,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:16:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:16:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-18 16:16:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:16:56,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309407671] [2020-08-18 16:16:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:16:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:16:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:16:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:16:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:16:57,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309407671] [2020-08-18 16:16:57,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:16:57,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:16:57,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857878735] [2020-08-18 16:16:57,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:16:57,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:16:57,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:16:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:16:57,046 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-18 16:16:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:16:57,866 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-18 16:16:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:16:57,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 16:16:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:16:57,873 INFO L225 Difference]: With dead ends: 487 [2020-08-18 16:16:57,874 INFO L226 Difference]: Without dead ends: 368 [2020-08-18 16:16:57,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:16:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-18 16:16:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-18 16:16:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-18 16:16:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-18 16:16:57,950 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-18 16:16:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:16:57,952 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-18 16:16:57,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:16:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-18 16:16:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 16:16:57,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:16:57,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:16:57,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:16:57,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:16:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:16:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-18 16:16:57,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:16:57,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777304654] [2020-08-18 16:16:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:16:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:16:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:16:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:16:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:16:58,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777304654] [2020-08-18 16:16:58,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:16:58,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:16:58,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105346648] [2020-08-18 16:16:58,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:16:58,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:16:58,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:16:58,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:16:58,182 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-18 16:16:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:16:59,017 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-18 16:16:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:16:59,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-18 16:16:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:16:59,021 INFO L225 Difference]: With dead ends: 347 [2020-08-18 16:16:59,022 INFO L226 Difference]: Without dead ends: 343 [2020-08-18 16:16:59,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:16:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-18 16:16:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-18 16:16:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-18 16:16:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-18 16:16:59,050 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-18 16:16:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:16:59,051 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-18 16:16:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:16:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-18 16:16:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:16:59,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:16:59,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:16:59,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:16:59,054 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:16:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:16:59,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-18 16:16:59,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:16:59,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470284264] [2020-08-18 16:16:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:16:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:16:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:16:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:59,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:16:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:59,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 16:16:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:16:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:16:59,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470284264] [2020-08-18 16:16:59,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:16:59,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:16:59,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688050375] [2020-08-18 16:16:59,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:16:59,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:16:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:16:59,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:16:59,250 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-18 16:17:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:00,456 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-18 16:17:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:17:00,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 16:17:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:00,459 INFO L225 Difference]: With dead ends: 394 [2020-08-18 16:17:00,459 INFO L226 Difference]: Without dead ends: 325 [2020-08-18 16:17:00,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:17:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-18 16:17:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-18 16:17:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 16:17:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-18 16:17:00,484 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-18 16:17:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:00,484 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-18 16:17:00,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:17:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-18 16:17:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 16:17:00,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:00,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:00,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:17:00,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:00,487 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-18 16:17:00,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:00,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498483677] [2020-08-18 16:17:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:17:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 16:17:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:00,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498483677] [2020-08-18 16:17:00,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:00,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:17:00,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600574759] [2020-08-18 16:17:00,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:17:00,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:17:00,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:17:00,701 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-18 16:17:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:01,215 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-18 16:17:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:17:01,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-18 16:17:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:01,218 INFO L225 Difference]: With dead ends: 316 [2020-08-18 16:17:01,218 INFO L226 Difference]: Without dead ends: 300 [2020-08-18 16:17:01,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:17:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-18 16:17:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-18 16:17:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-18 16:17:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-18 16:17:01,240 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-18 16:17:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:01,241 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-18 16:17:01,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:17:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-18 16:17:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:17:01,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:01,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:01,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:17:01,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-18 16:17:01,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:01,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703238477] [2020-08-18 16:17:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:17:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 16:17:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:01,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703238477] [2020-08-18 16:17:01,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:01,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:17:01,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473505415] [2020-08-18 16:17:01,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:17:01,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:01,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:17:01,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:17:01,436 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-18 16:17:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:02,421 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-18 16:17:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:17:02,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 16:17:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:02,427 INFO L225 Difference]: With dead ends: 290 [2020-08-18 16:17:02,427 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 16:17:02,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:17:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 16:17:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 16:17:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 16:17:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-18 16:17:02,453 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-18 16:17:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:02,453 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-18 16:17:02,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:17:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-18 16:17:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:17:02,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:02,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:02,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:17:02,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-18 16:17:02,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:02,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116041831] [2020-08-18 16:17:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:17:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:17:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:02,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116041831] [2020-08-18 16:17:02,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:02,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:17:02,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230808733] [2020-08-18 16:17:02,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:17:02,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:17:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:17:02,667 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-18 16:17:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:03,300 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-18 16:17:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:17:03,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-18 16:17:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:03,305 INFO L225 Difference]: With dead ends: 270 [2020-08-18 16:17:03,305 INFO L226 Difference]: Without dead ends: 240 [2020-08-18 16:17:03,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:17:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-18 16:17:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-18 16:17:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 16:17:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-18 16:17:03,330 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-18 16:17:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:03,331 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-18 16:17:03,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:17:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-18 16:17:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:17:03,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:03,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:03,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:17:03,333 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-18 16:17:03,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:03,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418330735] [2020-08-18 16:17:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:17:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:03,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418330735] [2020-08-18 16:17:03,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:03,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:17:03,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771302056] [2020-08-18 16:17:03,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:17:03,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:03,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:17:03,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:17:03,604 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-18 16:17:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:04,990 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-18 16:17:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:17:04,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-18 16:17:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:04,995 INFO L225 Difference]: With dead ends: 313 [2020-08-18 16:17:04,996 INFO L226 Difference]: Without dead ends: 307 [2020-08-18 16:17:04,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:17:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-18 16:17:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-18 16:17:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-18 16:17:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-18 16:17:05,042 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-18 16:17:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:05,043 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-18 16:17:05,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:17:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-18 16:17:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:17:05,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:05,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:05,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:17:05,056 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-18 16:17:05,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:05,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634903668] [2020-08-18 16:17:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:17:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:05,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634903668] [2020-08-18 16:17:05,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:05,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:17:05,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911671445] [2020-08-18 16:17:05,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:17:05,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:05,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:17:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:17:05,314 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-18 16:17:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:07,403 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-18 16:17:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:17:07,404 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-18 16:17:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:07,406 INFO L225 Difference]: With dead ends: 325 [2020-08-18 16:17:07,406 INFO L226 Difference]: Without dead ends: 284 [2020-08-18 16:17:07,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:17:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-18 16:17:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-18 16:17:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 16:17:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-18 16:17:07,445 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-18 16:17:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:07,446 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-18 16:17:07,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:17:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-18 16:17:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:17:07,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:07,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:07,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:17:07,449 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-18 16:17:07,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:07,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585992434] [2020-08-18 16:17:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:17:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:07,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585992434] [2020-08-18 16:17:07,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:07,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:17:07,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223636195] [2020-08-18 16:17:07,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:17:07,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:07,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:17:07,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:17:07,697 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-18 16:17:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:08,869 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-18 16:17:08,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:17:08,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-18 16:17:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:08,872 INFO L225 Difference]: With dead ends: 252 [2020-08-18 16:17:08,872 INFO L226 Difference]: Without dead ends: 211 [2020-08-18 16:17:08,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:17:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-18 16:17:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-18 16:17:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 16:17:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-18 16:17:08,890 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-18 16:17:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-18 16:17:08,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:17:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-18 16:17:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 16:17:08,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:08,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:08,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:17:08,893 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-18 16:17:08,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474472592] [2020-08-18 16:17:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:08,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 16:17:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:09,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474472592] [2020-08-18 16:17:09,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 16:17:09,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916152601] [2020-08-18 16:17:09,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:17:09,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:17:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:17:09,163 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-18 16:17:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:10,340 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-18 16:17:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:17:10,340 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-18 16:17:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:10,342 INFO L225 Difference]: With dead ends: 227 [2020-08-18 16:17:10,342 INFO L226 Difference]: Without dead ends: 206 [2020-08-18 16:17:10,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:17:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-18 16:17:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-18 16:17:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 16:17:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-18 16:17:10,369 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-18 16:17:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:10,369 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-18 16:17:10,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:17:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-18 16:17:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:17:10,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:10,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:10,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:17:10,371 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-18 16:17:10,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:10,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213002812] [2020-08-18 16:17:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 16:17:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:10,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213002812] [2020-08-18 16:17:10,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:10,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:17:10,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717626696] [2020-08-18 16:17:10,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:17:10,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:10,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:17:10,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:17:10,616 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-18 16:17:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:11,444 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-18 16:17:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:17:11,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 16:17:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:11,447 INFO L225 Difference]: With dead ends: 296 [2020-08-18 16:17:11,448 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 16:17:11,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:17:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 16:17:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-18 16:17:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 16:17:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-18 16:17:11,466 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-18 16:17:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:11,467 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-18 16:17:11,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:17:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-18 16:17:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:17:11,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:11,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:11,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 16:17:11,469 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-18 16:17:11,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:11,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626275866] [2020-08-18 16:17:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 16:17:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:11,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626275866] [2020-08-18 16:17:11,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:11,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:17:11,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598245373] [2020-08-18 16:17:11,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:17:11,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:11,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:17:11,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:17:11,681 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-18 16:17:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:12,615 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-18 16:17:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:17:12,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 16:17:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:12,618 INFO L225 Difference]: With dead ends: 232 [2020-08-18 16:17:12,618 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 16:17:12,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:17:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 16:17:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-18 16:17:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-18 16:17:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-18 16:17:12,636 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-18 16:17:12,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:12,636 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-18 16:17:12,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:17:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-18 16:17:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:17:12,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:12,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:12,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 16:17:12,639 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-18 16:17:12,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:12,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360153879] [2020-08-18 16:17:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:17:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 16:17:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:17:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:12,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360153879] [2020-08-18 16:17:12,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:12,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:17:12,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028470104] [2020-08-18 16:17:12,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:17:12,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:17:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:17:12,845 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-18 16:17:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:13,459 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-18 16:17:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:17:13,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-18 16:17:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:13,461 INFO L225 Difference]: With dead ends: 258 [2020-08-18 16:17:13,462 INFO L226 Difference]: Without dead ends: 214 [2020-08-18 16:17:13,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:17:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-18 16:17:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-18 16:17:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 16:17:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-18 16:17:13,487 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-18 16:17:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:13,487 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-18 16:17:13,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:17:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-18 16:17:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 16:17:13,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:13,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:13,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 16:17:13,489 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-18 16:17:13,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:13,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58856425] [2020-08-18 16:17:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:17:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:17:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:13,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58856425] [2020-08-18 16:17:13,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:13,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 16:17:13,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42138455] [2020-08-18 16:17:13,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:17:13,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:13,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:17:13,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:17:13,808 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-18 16:17:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:15,173 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-18 16:17:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:17:15,174 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-18 16:17:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:15,176 INFO L225 Difference]: With dead ends: 226 [2020-08-18 16:17:15,176 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 16:17:15,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:17:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 16:17:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-18 16:17:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-18 16:17:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-18 16:17:15,192 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-18 16:17:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:15,192 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-18 16:17:15,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:17:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-18 16:17:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:17:15,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:15,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:15,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 16:17:15,194 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:15,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-18 16:17:15,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:15,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025479723] [2020-08-18 16:17:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:17:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 16:17:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:17:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:15,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025479723] [2020-08-18 16:17:15,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:15,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 16:17:15,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798613160] [2020-08-18 16:17:15,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:17:15,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:17:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:17:15,551 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-18 16:17:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:16,733 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-18 16:17:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:17:16,734 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-18 16:17:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:16,738 INFO L225 Difference]: With dead ends: 200 [2020-08-18 16:17:16,738 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 16:17:16,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:17:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 16:17:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-18 16:17:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-18 16:17:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-18 16:17:16,765 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-18 16:17:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:16,765 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-18 16:17:16,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:17:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-18 16:17:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 16:17:16,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:16,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:16,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 16:17:16,768 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-18 16:17:16,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:16,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535125856] [2020-08-18 16:17:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 16:17:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:17:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:17,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535125856] [2020-08-18 16:17:17,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:17,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:17:17,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620474089] [2020-08-18 16:17:17,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:17:17,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:17:17,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:17:17,185 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-18 16:17:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:18,316 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-18 16:17:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:17:18,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-18 16:17:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:18,318 INFO L225 Difference]: With dead ends: 237 [2020-08-18 16:17:18,318 INFO L226 Difference]: Without dead ends: 220 [2020-08-18 16:17:18,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:17:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-18 16:17:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-18 16:17:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 16:17:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-18 16:17:18,339 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-18 16:17:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:18,339 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-18 16:17:18,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:17:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-18 16:17:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 16:17:18,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:18,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:18,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 16:17:18,341 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-18 16:17:18,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:18,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872077751] [2020-08-18 16:17:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 16:17:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:17:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:18,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872077751] [2020-08-18 16:17:18,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:18,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 16:17:18,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654490577] [2020-08-18 16:17:18,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:17:18,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:17:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:17:18,650 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-18 16:17:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:19,647 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-18 16:17:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:17:19,648 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-18 16:17:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:19,649 INFO L225 Difference]: With dead ends: 206 [2020-08-18 16:17:19,649 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 16:17:19,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:17:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 16:17:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-18 16:17:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 16:17:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-18 16:17:19,673 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-18 16:17:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:19,673 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-18 16:17:19,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:17:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-18 16:17:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 16:17:19,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:19,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:19,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 16:17:19,675 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-18 16:17:19,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:19,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022236555] [2020-08-18 16:17:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:17:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:17:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 16:17:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:19,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022236555] [2020-08-18 16:17:19,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:19,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:17:19,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950966995] [2020-08-18 16:17:19,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:17:19,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:17:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:17:19,918 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-18 16:17:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:20,254 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-18 16:17:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:17:20,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-18 16:17:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:20,257 INFO L225 Difference]: With dead ends: 204 [2020-08-18 16:17:20,257 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 16:17:20,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:17:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 16:17:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-18 16:17:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-18 16:17:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-18 16:17:20,274 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-18 16:17:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:20,274 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-18 16:17:20,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:17:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-18 16:17:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:17:20,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:20,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:17:20,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 16:17:20,276 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-18 16:17:20,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:20,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056933800] [2020-08-18 16:17:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:17:20,301 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:17:20,301 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:17:20,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 16:17:20,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:17:20 BoogieIcfgContainer [2020-08-18 16:17:20,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:17:20,338 INFO L168 Benchmark]: Toolchain (without parser) took 28572.76 ms. Allocated memory was 146.8 MB in the beginning and 494.4 MB in the end (delta: 347.6 MB). Free memory was 102.2 MB in the beginning and 86.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 363.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,339 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.85 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 176.4 MB in the end (delta: -74.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,341 INFO L168 Benchmark]: Boogie Preprocessor took 69.23 ms. Allocated memory is still 203.4 MB. Free memory was 176.4 MB in the beginning and 173.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,341 INFO L168 Benchmark]: RCFGBuilder took 1089.38 ms. Allocated memory is still 203.4 MB. Free memory was 173.3 MB in the beginning and 101.6 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,342 INFO L168 Benchmark]: TraceAbstraction took 26840.77 ms. Allocated memory was 203.4 MB in the beginning and 494.4 MB in the end (delta: 291.0 MB). Free memory was 101.6 MB in the beginning and 86.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 306.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:20,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 563.85 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 176.4 MB in the end (delta: -74.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.23 ms. Allocated memory is still 203.4 MB. Free memory was 176.4 MB in the beginning and 173.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1089.38 ms. Allocated memory is still 203.4 MB. Free memory was 173.3 MB in the beginning and 101.6 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26840.77 ms. Allocated memory was 203.4 MB in the beginning and 494.4 MB in the end (delta: 291.0 MB). Free memory was 101.6 MB in the beginning and 86.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 306.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.7s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4631 SDtfs, 6121 SDslu, 7826 SDs, 0 SdLazy, 16042 SolverSat, 1268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 275 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1029 NumberOfCodeBlocks, 1029 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 953 ConstructedInterpolants, 0 QuantifiedInterpolants, 212124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...