/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 --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -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 12:08:42,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:08:42,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:08:42,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:08:42,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:08:42,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:08:42,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:08:42,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:08:42,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:08:42,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:08:42,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:08:42,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:08:42,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:08:42,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:08:42,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:08:42,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:08:42,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:08:42,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:08:42,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:08:42,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:08:42,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:08:42,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:08:42,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:08:42,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:08:42,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:08:42,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:08:42,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:08:42,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:08:42,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:08:42,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:08:42,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:08:42,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:08:42,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:08:42,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:08:42,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:08:42,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:08:42,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:08:42,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:08:42,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:08:42,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:08:42,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:08:42,550 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 12:08:42,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:08:42,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:08:42,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:08:42,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:08:42,594 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:08:42,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:08:42,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:08:42,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:08:42,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:08:42,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:08:42,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:08:42,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:08:42,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:08:42,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:08:42,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:08:42,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:08:42,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:08:42,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:08:42,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:08:42,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:08:42,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:08:42,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:08:42,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:08:42,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:08:42,601 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:08:42,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:08:42,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:08:42,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:08:42,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:08:42,950 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:08:42,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 12:08:43,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fc05180e/671f8105a7914d90bea9c645ed22d8ab/FLAG45f249bc3 [2020-08-18 12:08:43,503 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:08:43,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 12:08:43,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fc05180e/671f8105a7914d90bea9c645ed22d8ab/FLAG45f249bc3 [2020-08-18 12:08:43,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fc05180e/671f8105a7914d90bea9c645ed22d8ab [2020-08-18 12:08:43,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:08:43,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:08:43,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:08:43,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:08:43,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:08:43,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:08:43" (1/1) ... [2020-08-18 12:08:43,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6381bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:43, skipping insertion in model container [2020-08-18 12:08:43,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:08:43" (1/1) ... [2020-08-18 12:08:43,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:08:43,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:08:44,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:08:44,261 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:08:44,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:08:44,464 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:08:44,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44 WrapperNode [2020-08-18 12:08:44,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:08:44,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:08:44,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:08:44,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:08:44,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (1/1) ... [2020-08-18 12:08:44,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:08:44,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:08:44,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:08:44,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:08:44,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (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 12:08:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:08:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:08:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-18 12:08:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-18 12:08:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-18 12:08:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:08:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-18 12:08:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-18 12:08:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-18 12:08:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-18 12:08:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-18 12:08:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-18 12:08:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-18 12:08:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-18 12:08:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-18 12:08:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-18 12:08:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-18 12:08:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-18 12:08:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:08:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 12:08:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:08:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-18 12:08:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-18 12:08:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-18 12:08:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-18 12:08:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-18 12:08:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-18 12:08:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-18 12:08:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-18 12:08:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-18 12:08:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-18 12:08:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-18 12:08:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-18 12:08:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:08:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:08:44,955 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,015 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-18 12:08:45,015 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-18 12:08:45,037 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,153 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-18 12:08:45,153 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-18 12:08:45,154 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,191 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 12:08:45,191 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 12:08:45,197 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,236 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 12:08:45,236 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 12:08:45,349 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,367 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-18 12:08:45,368 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-18 12:08:45,392 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 12:08:45,482 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-18 12:08:45,482 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-18 12:08:45,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:08:45,502 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:08:45,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:08:45 BoogieIcfgContainer [2020-08-18 12:08:45,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:08:45,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:08:45,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:08:45,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:08:45,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:08:43" (1/3) ... [2020-08-18 12:08:45,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a878992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:08:45, skipping insertion in model container [2020-08-18 12:08:45,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:44" (2/3) ... [2020-08-18 12:08:45,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a878992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:08:45, skipping insertion in model container [2020-08-18 12:08:45,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:08:45" (3/3) ... [2020-08-18 12:08:45,518 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-18 12:08:45,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:08:45,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:08:45,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:08:45,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:08:45,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:08:45,586 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:08:45,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:08:45,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:08:45,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:08:45,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:08:45,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:08:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-18 12:08:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 12:08:45,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:45,622 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 12:08:45,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-18 12:08:45,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:45,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976332815] [2020-08-18 12:08:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:46,030 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 12:08:46,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976332815] [2020-08-18 12:08:46,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:46,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:08:46,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585168232] [2020-08-18 12:08:46,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:08:46,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:08:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:08:46,058 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-18 12:08:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:47,102 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-18 12:08:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:08:47,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 12:08:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:47,120 INFO L225 Difference]: With dead ends: 418 [2020-08-18 12:08:47,120 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 12:08:47,127 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 12:08:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 12:08:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-18 12:08:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-18 12:08:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-18 12:08:47,211 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-18 12:08:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:47,211 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-18 12:08:47,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:08:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-18 12:08:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 12:08:47,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:47,213 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 12:08:47,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:08:47,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-18 12:08:47,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:47,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566699101] [2020-08-18 12:08:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:47,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:47,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:47,510 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 12:08:47,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566699101] [2020-08-18 12:08:47,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:47,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:08:47,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079776337] [2020-08-18 12:08:47,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:08:47,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:47,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:08:47,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:08:47,515 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-18 12:08:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:48,767 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-18 12:08:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:08:48,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 12:08:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:48,774 INFO L225 Difference]: With dead ends: 410 [2020-08-18 12:08:48,774 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 12:08:48,777 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 12:08:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 12:08:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-18 12:08:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 12:08:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-18 12:08:48,829 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-18 12:08:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:48,829 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-18 12:08:48,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:08:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-18 12:08:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 12:08:48,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:48,831 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 12:08:48,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:08:48,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:48,832 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-18 12:08:48,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:48,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034664473] [2020-08-18 12:08:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:48,988 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 12:08:48,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034664473] [2020-08-18 12:08:48,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:48,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:08:48,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299559204] [2020-08-18 12:08:48,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:08:48,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:48,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:08:48,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:08:48,991 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-18 12:08:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:49,756 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-18 12:08:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:08:49,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 12:08:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:49,760 INFO L225 Difference]: With dead ends: 487 [2020-08-18 12:08:49,760 INFO L226 Difference]: Without dead ends: 368 [2020-08-18 12:08:49,761 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 12:08:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-18 12:08:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-18 12:08:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-18 12:08:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-18 12:08:49,811 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-18 12:08:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:49,811 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-18 12:08:49,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:08:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-18 12:08:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 12:08:49,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:49,814 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 12:08:49,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:08:49,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-18 12:08:49,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:49,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676807154] [2020-08-18 12:08:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:50,005 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 12:08:50,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676807154] [2020-08-18 12:08:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:50,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:08:50,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931575678] [2020-08-18 12:08:50,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:08:50,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:50,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:08:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:08:50,012 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-18 12:08:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:50,844 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-18 12:08:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:08:50,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-18 12:08:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:50,849 INFO L225 Difference]: With dead ends: 347 [2020-08-18 12:08:50,850 INFO L226 Difference]: Without dead ends: 343 [2020-08-18 12:08:50,850 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 12:08:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-18 12:08:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-18 12:08:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-18 12:08:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-18 12:08:50,887 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-18 12:08:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:50,887 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-18 12:08:50,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:08:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-18 12:08:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 12:08:50,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:50,891 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 12:08:50,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:08:50,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-18 12:08:50,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:50,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402107626] [2020-08-18 12:08:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:08:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:51,074 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 12:08:51,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402107626] [2020-08-18 12:08:51,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:51,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:08:51,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562637009] [2020-08-18 12:08:51,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:08:51,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:51,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:08:51,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:08:51,077 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-18 12:08:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:52,163 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-18 12:08:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:08:52,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 12:08:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:52,167 INFO L225 Difference]: With dead ends: 394 [2020-08-18 12:08:52,167 INFO L226 Difference]: Without dead ends: 325 [2020-08-18 12:08:52,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:08:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-18 12:08:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-18 12:08:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 12:08:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-18 12:08:52,201 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-18 12:08:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:52,203 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-18 12:08:52,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:08:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-18 12:08:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 12:08:52,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:52,207 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 12:08:52,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:08:52,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-18 12:08:52,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:52,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813698937] [2020-08-18 12:08:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:08:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 12:08:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:52,395 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 12:08:52,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813698937] [2020-08-18 12:08:52,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:52,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:08:52,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724534869] [2020-08-18 12:08:52,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:08:52,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:52,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:08:52,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:08:52,398 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-18 12:08:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:52,897 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-18 12:08:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:08:52,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-18 12:08:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:52,905 INFO L225 Difference]: With dead ends: 316 [2020-08-18 12:08:52,905 INFO L226 Difference]: Without dead ends: 300 [2020-08-18 12:08:52,906 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 12:08:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-18 12:08:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-18 12:08:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-18 12:08:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-18 12:08:52,928 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-18 12:08:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:52,928 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-18 12:08:52,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:08:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-18 12:08:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 12:08:52,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:52,930 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 12:08:52,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:08:52,931 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:52,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-18 12:08:52,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:52,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519057917] [2020-08-18 12:08:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:08:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 12:08:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:53,111 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 12:08:53,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519057917] [2020-08-18 12:08:53,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:53,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:08:53,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4728842] [2020-08-18 12:08:53,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:08:53,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:53,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:08:53,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:08:53,114 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-18 12:08:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:54,055 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-18 12:08:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:08:54,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 12:08:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:54,059 INFO L225 Difference]: With dead ends: 290 [2020-08-18 12:08:54,060 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 12:08:54,060 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 12:08:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 12:08:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 12:08:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 12:08:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-18 12:08:54,084 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-18 12:08:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:54,085 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-18 12:08:54,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:08:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-18 12:08:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 12:08:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:54,087 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 12:08:54,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:08:54,088 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:54,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-18 12:08:54,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:54,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972300343] [2020-08-18 12:08:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:08:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:08:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:08:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,260 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 12:08:54,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972300343] [2020-08-18 12:08:54,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:54,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:08:54,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812638479] [2020-08-18 12:08:54,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:08:54,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:54,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:08:54,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:08:54,263 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-18 12:08:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:54,817 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-18 12:08:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:08:54,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-18 12:08:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:54,820 INFO L225 Difference]: With dead ends: 270 [2020-08-18 12:08:54,820 INFO L226 Difference]: Without dead ends: 240 [2020-08-18 12:08:54,821 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 12:08:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-18 12:08:54,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-18 12:08:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 12:08:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-18 12:08:54,841 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-18 12:08:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:54,841 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-18 12:08:54,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:08:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-18 12:08:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 12:08:54,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:54,843 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 12:08:54,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:08:54,844 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-18 12:08:54,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:54,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108298983] [2020-08-18 12:08:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:54,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:55,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:08:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:55,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:08:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:55,043 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 12:08:55,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108298983] [2020-08-18 12:08:55,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:55,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:08:55,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240478247] [2020-08-18 12:08:55,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:08:55,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:55,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:08:55,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:08:55,046 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-18 12:08:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:56,416 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-18 12:08:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:08:56,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-18 12:08:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:56,420 INFO L225 Difference]: With dead ends: 313 [2020-08-18 12:08:56,421 INFO L226 Difference]: Without dead ends: 307 [2020-08-18 12:08:56,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:08:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-18 12:08:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-18 12:08:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-18 12:08:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-18 12:08:56,444 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-18 12:08:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:56,444 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-18 12:08:56,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:08:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-18 12:08:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 12:08:56,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:56,446 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 12:08:56,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:08:56,447 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:56,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:56,447 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-18 12:08:56,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:56,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196696601] [2020-08-18 12:08:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:08:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:08:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:56,717 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 12:08:56,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196696601] [2020-08-18 12:08:56,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:56,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 12:08:56,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843362616] [2020-08-18 12:08:56,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:08:56,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:56,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:08:56,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:08:56,721 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-18 12:08:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:58,755 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-18 12:08:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 12:08:58,755 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-18 12:08:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:58,758 INFO L225 Difference]: With dead ends: 325 [2020-08-18 12:08:58,758 INFO L226 Difference]: Without dead ends: 284 [2020-08-18 12:08:58,759 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 12:08:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-18 12:08:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-18 12:08:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 12:08:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-18 12:08:58,790 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-18 12:08:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:58,790 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-18 12:08:58,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:08:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-18 12:08:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 12:08:58,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:58,793 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 12:08:58,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:08:58,794 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-18 12:08:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510782678] [2020-08-18 12:08:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:08:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:08:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:59,042 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 12:08:59,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510782678] [2020-08-18 12:08:59,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:59,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:08:59,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273974410] [2020-08-18 12:08:59,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:08:59,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:59,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:08:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:08:59,044 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-18 12:09:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:00,269 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-18 12:09:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:09:00,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-18 12:09:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:00,273 INFO L225 Difference]: With dead ends: 252 [2020-08-18 12:09:00,273 INFO L226 Difference]: Without dead ends: 211 [2020-08-18 12:09:00,274 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 12:09:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-18 12:09:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-18 12:09:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 12:09:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-18 12:09:00,297 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-18 12:09:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:00,298 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-18 12:09:00,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:09:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-18 12:09:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 12:09:00,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:00,300 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 12:09:00,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:09:00,300 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:00,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-18 12:09:00,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:00,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250370542] [2020-08-18 12:09:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:09:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:00,555 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 12:09:00,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250370542] [2020-08-18 12:09:00,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:00,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 12:09:00,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64545628] [2020-08-18 12:09:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 12:09:00,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 12:09:00,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:09:00,558 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-18 12:09:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:01,723 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-18 12:09:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:09:01,723 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-18 12:09:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:01,725 INFO L225 Difference]: With dead ends: 227 [2020-08-18 12:09:01,725 INFO L226 Difference]: Without dead ends: 206 [2020-08-18 12:09:01,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:09:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-18 12:09:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-18 12:09:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 12:09:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-18 12:09:01,744 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-18 12:09:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:01,744 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-18 12:09:01,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 12:09:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-18 12:09:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 12:09:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:01,746 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 12:09:01,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:09:01,746 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-18 12:09:01,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:01,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793082475] [2020-08-18 12:09:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:09:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:09:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:09:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:01,998 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 12:09:01,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793082475] [2020-08-18 12:09:01,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:01,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:09:01,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318254156] [2020-08-18 12:09:02,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:09:02,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:09:02,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:09:02,002 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-18 12:09:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:02,840 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-18 12:09:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:09:02,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 12:09:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:02,843 INFO L225 Difference]: With dead ends: 296 [2020-08-18 12:09:02,843 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 12:09:02,844 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 12:09:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 12:09:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-18 12:09:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 12:09:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-18 12:09:02,861 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-18 12:09:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:02,862 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-18 12:09:02,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:09:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-18 12:09:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 12:09:02,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:02,863 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 12:09:02,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 12:09:02,864 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-18 12:09:02,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:02,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780937302] [2020-08-18 12:09:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:09:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:09:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:09:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:03,071 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 12:09:03,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780937302] [2020-08-18 12:09:03,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:03,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:09:03,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242513267] [2020-08-18 12:09:03,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:09:03,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:09:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:09:03,074 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-18 12:09:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:03,988 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-18 12:09:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:09:03,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 12:09:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:03,991 INFO L225 Difference]: With dead ends: 232 [2020-08-18 12:09:03,991 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 12:09:03,992 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 12:09:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 12:09:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-18 12:09:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-18 12:09:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-18 12:09:04,012 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-18 12:09:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:04,012 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-18 12:09:04,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:09:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-18 12:09:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:09:04,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:04,014 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 12:09:04,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 12:09:04,015 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:04,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-18 12:09:04,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:04,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981522477] [2020-08-18 12:09:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:09:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 12:09:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:09:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:04,225 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 12:09:04,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981522477] [2020-08-18 12:09:04,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:04,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:09:04,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802406420] [2020-08-18 12:09:04,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:09:04,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:04,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:09:04,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:09:04,228 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-18 12:09:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:05,011 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-18 12:09:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:09:05,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-18 12:09:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:05,014 INFO L225 Difference]: With dead ends: 258 [2020-08-18 12:09:05,014 INFO L226 Difference]: Without dead ends: 214 [2020-08-18 12:09:05,015 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 12:09:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-18 12:09:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-18 12:09:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 12:09:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-18 12:09:05,040 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-18 12:09:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:05,041 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-18 12:09:05,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:09:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-18 12:09:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 12:09:05,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:05,043 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 12:09:05,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 12:09:05,043 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-18 12:09:05,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:05,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246053668] [2020-08-18 12:09:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:09:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:09:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:09:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:05,407 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 12:09:05,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246053668] [2020-08-18 12:09:05,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:05,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 12:09:05,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583535156] [2020-08-18 12:09:05,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:09:05,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:09:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:09:05,411 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-18 12:09:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:06,604 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-18 12:09:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:09:06,605 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-18 12:09:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:06,607 INFO L225 Difference]: With dead ends: 226 [2020-08-18 12:09:06,607 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 12:09:06,608 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 12:09:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 12:09:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-18 12:09:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-18 12:09:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-18 12:09:06,623 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-18 12:09:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:06,624 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-18 12:09:06,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:09:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-18 12:09:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 12:09:06,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:06,625 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 12:09:06,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 12:09:06,626 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-18 12:09:06,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:06,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035347005] [2020-08-18 12:09:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:09:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 12:09:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 12:09:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:06,896 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 12:09:06,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035347005] [2020-08-18 12:09:06,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:06,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 12:09:06,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561570245] [2020-08-18 12:09:06,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:09:06,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:09:06,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:09:06,899 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-18 12:09:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:07,919 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-18 12:09:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:09:07,920 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-18 12:09:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:07,921 INFO L225 Difference]: With dead ends: 200 [2020-08-18 12:09:07,921 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 12:09:07,922 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 12:09:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 12:09:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-18 12:09:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-18 12:09:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-18 12:09:07,938 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-18 12:09:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:07,939 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-18 12:09:07,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:09:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-18 12:09:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 12:09:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:07,940 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 12:09:07,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 12:09:07,941 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-18 12:09:07,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64344205] [2020-08-18 12:09:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:09:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:09:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:08,260 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 12:09:08,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64344205] [2020-08-18 12:09:08,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:08,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 12:09:08,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141949813] [2020-08-18 12:09:08,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:09:08,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:08,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:09:08,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:09:08,270 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-18 12:09:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:09,421 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-18 12:09:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:09:09,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-18 12:09:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:09,423 INFO L225 Difference]: With dead ends: 237 [2020-08-18 12:09:09,424 INFO L226 Difference]: Without dead ends: 220 [2020-08-18 12:09:09,424 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 12:09:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-18 12:09:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-18 12:09:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 12:09:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-18 12:09:09,440 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-18 12:09:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:09,441 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-18 12:09:09,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:09:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-18 12:09:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 12:09:09,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:09,442 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 12:09:09,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 12:09:09,443 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-18 12:09:09,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:09,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680584138] [2020-08-18 12:09:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 12:09:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:09:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:09,706 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 12:09:09,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680584138] [2020-08-18 12:09:09,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:09,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 12:09:09,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579024071] [2020-08-18 12:09:09,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 12:09:09,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:09,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 12:09:09,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:09:09,709 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-18 12:09:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:10,689 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-18 12:09:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:09:10,689 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-18 12:09:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:10,691 INFO L225 Difference]: With dead ends: 206 [2020-08-18 12:09:10,691 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 12:09:10,693 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 12:09:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 12:09:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-18 12:09:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 12:09:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-18 12:09:10,709 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-18 12:09:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:10,709 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-18 12:09:10,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 12:09:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-18 12:09:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 12:09:10,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:10,710 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 12:09:10,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 12:09:10,711 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:10,711 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-18 12:09:10,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:10,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362438634] [2020-08-18 12:09:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:09:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:09:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:09:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:09:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:09:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:09:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:09:10,934 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 12:09:10,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362438634] [2020-08-18 12:09:10,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:09:10,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:09:10,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588116332] [2020-08-18 12:09:10,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:09:10,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:09:10,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:09:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:09:10,936 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-18 12:09:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:09:11,311 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-18 12:09:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:09:11,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-18 12:09:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:09:11,312 INFO L225 Difference]: With dead ends: 204 [2020-08-18 12:09:11,313 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 12:09:11,313 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 12:09:11,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 12:09:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-18 12:09:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-18 12:09:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-18 12:09:11,330 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-18 12:09:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:09:11,330 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-18 12:09:11,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:09:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-18 12:09:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 12:09:11,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:09:11,333 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, 1, 1, 1, 1, 1] [2020-08-18 12:09:11,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 12:09:11,333 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:09:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:09:11,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-18 12:09:11,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:09:11,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100117940] [2020-08-18 12:09:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:09:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:09:11,372 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:09:11,373 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:09:11,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 12:09:11,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:09:11 BoogieIcfgContainer [2020-08-18 12:09:11,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:09:11,445 INFO L168 Benchmark]: Toolchain (without parser) took 27569.16 ms. Allocated memory was 139.5 MB in the beginning and 516.4 MB in the end (delta: 377.0 MB). Free memory was 102.1 MB in the beginning and 333.4 MB in the end (delta: -231.3 MB). Peak memory consumption was 145.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,445 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.85 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 176.2 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,453 INFO L168 Benchmark]: Boogie Preprocessor took 81.96 ms. Allocated memory is still 203.4 MB. Free memory was 176.2 MB in the beginning and 173.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,454 INFO L168 Benchmark]: RCFGBuilder took 957.93 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 101.7 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,454 INFO L168 Benchmark]: TraceAbstraction took 25927.10 ms. Allocated memory was 203.4 MB in the beginning and 516.4 MB in the end (delta: 313.0 MB). Free memory was 101.0 MB in the beginning and 333.4 MB in the end (delta: -232.4 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:09:11,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.85 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 176.2 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.96 ms. Allocated memory is still 203.4 MB. Free memory was 176.2 MB in the beginning and 173.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 957.93 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 101.7 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25927.10 ms. Allocated memory was 203.4 MB in the beginning and 516.4 MB in the end (delta: 313.0 MB). Free memory was 101.0 MB in the beginning and 333.4 MB in the end (delta: -232.4 MB). Peak memory consumption was 80.6 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: 25.7s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4631 SDtfs, 6122 SDslu, 7826 SDs, 0 SdLazy, 16035 SolverSat, 1269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 4.9s 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, 4.0s 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...