/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:51:08,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:51:08,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:51:08,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:51:08,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:51:08,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:51:08,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:51:08,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:51:08,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:51:08,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:51:08,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:51:08,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:51:08,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:51:08,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:51:08,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:51:08,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:51:08,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:51:08,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:51:08,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:51:08,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:51:08,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:51:08,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:51:08,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:51:08,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:51:08,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:51:08,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:51:08,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:51:08,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:51:08,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:51:08,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:51:08,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:51:08,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:51:08,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:51:08,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:51:08,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:51:08,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:51:08,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:51:08,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:51:08,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:51:08,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:51:08,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:51:08,579 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 [2020-08-22 03:51:08,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:51:08,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:51:08,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:51:08,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:51:08,615 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:51:08,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:51:08,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:51:08,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:51:08,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:51:08,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:51:08,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:51:08,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:51:08,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:51:08,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:51:08,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:51:08,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:51:08,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:51:08,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:51:08,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:51:08,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:51:08,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:51:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:51:08,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:51:08,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:51:08,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:51:08,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:51:08,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:51:08,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:51:08,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:51:08,622 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:51:08,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:51:08,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:51:08,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:51:08,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:51:08,968 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:51:08,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-22 03:51:09,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b5f778db/f4446ec3395c467e84e60fb99430d043/FLAG578f443f3 [2020-08-22 03:51:09,579 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:51:09,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-22 03:51:09,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b5f778db/f4446ec3395c467e84e60fb99430d043/FLAG578f443f3 [2020-08-22 03:51:09,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b5f778db/f4446ec3395c467e84e60fb99430d043 [2020-08-22 03:51:09,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:51:09,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:51:09,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:09,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:51:09,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:51:09,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:09" (1/1) ... [2020-08-22 03:51:09,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:09, skipping insertion in model container [2020-08-22 03:51:09,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:09" (1/1) ... [2020-08-22 03:51:09,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:51:09,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:51:10,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:10,257 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:51:10,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:10,449 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:51:10,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10 WrapperNode [2020-08-22 03:51:10,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:10,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:51:10,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:51:10,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:51:10,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (1/1) ... [2020-08-22 03:51:10,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:51:10,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:51:10,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:51:10,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:51:10,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (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 [2020-08-22 03:51:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:51:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:51:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-22 03:51:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-22 03:51:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-22 03:51:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-22 03:51:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-22 03:51:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:51:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 03:51:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:51:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-22 03:51:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-22 03:51:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-22 03:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-22 03:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-22 03:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:51:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:51:10,899 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:10,961 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-22 03:51:10,961 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-22 03:51:10,991 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:11,098 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-22 03:51:11,098 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-22 03:51:11,100 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:11,177 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-22 03:51:11,177 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-22 03:51:11,187 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:11,227 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-22 03:51:11,227 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-22 03:51:11,309 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:11,327 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-22 03:51:11,328 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-22 03:51:11,357 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:11,473 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-22 03:51:11,473 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-22 03:51:11,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:51:11,492 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 03:51:11,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:11 BoogieIcfgContainer [2020-08-22 03:51:11,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:51:11,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:51:11,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:51:11,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:51:11,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:51:09" (1/3) ... [2020-08-22 03:51:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dfd839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:11, skipping insertion in model container [2020-08-22 03:51:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:10" (2/3) ... [2020-08-22 03:51:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dfd839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:11, skipping insertion in model container [2020-08-22 03:51:11,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:11" (3/3) ... [2020-08-22 03:51:11,509 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-22 03:51:11,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:51:11,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:51:11,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:51:11,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:51:11,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:51:11,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:51:11,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:51:11,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:51:11,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:51:11,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:51:11,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:51:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-22 03:51:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 03:51:11,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:11,605 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] [2020-08-22 03:51:11,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-22 03:51:11,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:11,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006941354] [2020-08-22 03:51:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:12,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006941354] [2020-08-22 03:51:12,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:12,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:12,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550751766] [2020-08-22 03:51:12,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:12,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:12,052 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-22 03:51:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:13,130 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-22 03:51:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:13,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 03:51:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:13,167 INFO L225 Difference]: With dead ends: 418 [2020-08-22 03:51:13,167 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 03:51:13,184 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 [2020-08-22 03:51:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 03:51:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-22 03:51:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-22 03:51:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-22 03:51:13,268 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-22 03:51:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:13,268 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-22 03:51:13,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-22 03:51:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:51:13,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:13,271 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] [2020-08-22 03:51:13,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:51:13,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-22 03:51:13,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:13,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764292412] [2020-08-22 03:51:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:13,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764292412] [2020-08-22 03:51:13,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:13,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:51:13,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545152842] [2020-08-22 03:51:13,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:51:13,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:51:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:51:13,570 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-22 03:51:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:14,859 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-22 03:51:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:51:14,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 03:51:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:14,866 INFO L225 Difference]: With dead ends: 410 [2020-08-22 03:51:14,866 INFO L226 Difference]: Without dead ends: 349 [2020-08-22 03:51:14,868 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 [2020-08-22 03:51:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-22 03:51:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-22 03:51:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-22 03:51:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-22 03:51:14,910 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-22 03:51:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:14,911 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-22 03:51:14,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:51:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-22 03:51:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:51:14,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:14,913 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] [2020-08-22 03:51:14,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:51:14,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-22 03:51:14,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:14,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489289568] [2020-08-22 03:51:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:15,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489289568] [2020-08-22 03:51:15,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:15,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:51:15,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459632723] [2020-08-22 03:51:15,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:51:15,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:15,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:51:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:51:15,096 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-22 03:51:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:15,950 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-22 03:51:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:51:15,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 03:51:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:15,958 INFO L225 Difference]: With dead ends: 487 [2020-08-22 03:51:15,958 INFO L226 Difference]: Without dead ends: 368 [2020-08-22 03:51:15,959 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 [2020-08-22 03:51:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-22 03:51:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-22 03:51:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-22 03:51:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-22 03:51:16,031 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-22 03:51:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:16,033 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-22 03:51:16,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:51:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-22 03:51:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 03:51:16,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:16,041 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] [2020-08-22 03:51:16,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:51:16,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-22 03:51:16,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:16,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240166574] [2020-08-22 03:51:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:16,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240166574] [2020-08-22 03:51:16,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:16,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:51:16,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087933491] [2020-08-22 03:51:16,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:51:16,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:51:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:51:16,239 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-22 03:51:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:17,066 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-22 03:51:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:51:17,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-22 03:51:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:17,070 INFO L225 Difference]: With dead ends: 347 [2020-08-22 03:51:17,070 INFO L226 Difference]: Without dead ends: 343 [2020-08-22 03:51:17,071 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 [2020-08-22 03:51:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-22 03:51:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-22 03:51:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-22 03:51:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-22 03:51:17,101 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-22 03:51:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:17,102 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-22 03:51:17,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:51:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-22 03:51:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:51:17,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:17,105 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] [2020-08-22 03:51:17,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:51:17,105 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:17,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-22 03:51:17,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:17,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588079658] [2020-08-22 03:51:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 03:51:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:17,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588079658] [2020-08-22 03:51:17,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:17,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:51:17,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602781442] [2020-08-22 03:51:17,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:51:17,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:17,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:51:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:51:17,309 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-22 03:51:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:18,473 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-22 03:51:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:51:18,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-22 03:51:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:18,476 INFO L225 Difference]: With dead ends: 394 [2020-08-22 03:51:18,477 INFO L226 Difference]: Without dead ends: 325 [2020-08-22 03:51:18,477 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 [2020-08-22 03:51:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-22 03:51:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-22 03:51:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-22 03:51:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-22 03:51:18,500 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-22 03:51:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:18,501 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-22 03:51:18,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:51:18,501 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-22 03:51:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 03:51:18,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:18,503 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] [2020-08-22 03:51:18,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:51:18,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-22 03:51:18,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:18,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632673132] [2020-08-22 03:51:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:51:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:51:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:18,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632673132] [2020-08-22 03:51:18,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:18,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:51:18,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790071074] [2020-08-22 03:51:18,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:51:18,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:51:18,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:51:18,680 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-22 03:51:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:19,138 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-22 03:51:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:51:19,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-22 03:51:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:19,141 INFO L225 Difference]: With dead ends: 316 [2020-08-22 03:51:19,141 INFO L226 Difference]: Without dead ends: 300 [2020-08-22 03:51:19,142 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 [2020-08-22 03:51:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-22 03:51:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-22 03:51:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 03:51:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-22 03:51:19,166 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-22 03:51:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:19,167 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-22 03:51:19,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:51:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-22 03:51:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:51:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:19,168 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] [2020-08-22 03:51:19,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:51:19,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-22 03:51:19,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:19,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453035748] [2020-08-22 03:51:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:51:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:51:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:19,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453035748] [2020-08-22 03:51:19,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:19,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:51:19,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790519285] [2020-08-22 03:51:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:51:19,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:51:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:51:19,387 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-22 03:51:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:20,328 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-22 03:51:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:51:20,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-22 03:51:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:20,331 INFO L225 Difference]: With dead ends: 290 [2020-08-22 03:51:20,331 INFO L226 Difference]: Without dead ends: 242 [2020-08-22 03:51:20,337 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 [2020-08-22 03:51:20,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-22 03:51:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-22 03:51:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-22 03:51:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-22 03:51:20,358 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-22 03:51:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:20,359 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-22 03:51:20,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:51:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-22 03:51:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 03:51:20,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:20,366 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] [2020-08-22 03:51:20,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:51:20,366 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:20,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-22 03:51:20,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:20,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411834609] [2020-08-22 03:51:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:51:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:51:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:20,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411834609] [2020-08-22 03:51:20,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:20,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:51:20,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283864202] [2020-08-22 03:51:20,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:51:20,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:51:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:51:20,572 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-22 03:51:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:21,231 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-22 03:51:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:51:21,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-22 03:51:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:21,236 INFO L225 Difference]: With dead ends: 270 [2020-08-22 03:51:21,236 INFO L226 Difference]: Without dead ends: 240 [2020-08-22 03:51:21,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:51:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-22 03:51:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-22 03:51:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 03:51:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-22 03:51:21,258 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-22 03:51:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:21,259 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-22 03:51:21,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:51:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-22 03:51:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:51:21,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:21,260 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] [2020-08-22 03:51:21,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:51:21,261 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-22 03:51:21,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:21,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880802620] [2020-08-22 03:51:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:51:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:21,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880802620] [2020-08-22 03:51:21,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:21,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:51:21,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205536155] [2020-08-22 03:51:21,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:51:21,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:51:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:51:21,458 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-22 03:51:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:22,834 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-22 03:51:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:51:22,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-22 03:51:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:22,838 INFO L225 Difference]: With dead ends: 313 [2020-08-22 03:51:22,838 INFO L226 Difference]: Without dead ends: 307 [2020-08-22 03:51:22,840 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 [2020-08-22 03:51:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-22 03:51:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-22 03:51:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-22 03:51:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-22 03:51:22,866 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-22 03:51:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:22,867 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-22 03:51:22,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:51:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-22 03:51:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:51:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:22,872 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] [2020-08-22 03:51:22,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:51:22,872 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:22,872 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-22 03:51:22,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:22,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543339858] [2020-08-22 03:51:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:51:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:23,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543339858] [2020-08-22 03:51:23,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:23,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 03:51:23,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990413185] [2020-08-22 03:51:23,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:51:23,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:23,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:51:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:51:23,113 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-22 03:51:23,658 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-08-22 03:51:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:25,173 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-22 03:51:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 03:51:25,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-22 03:51:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:25,175 INFO L225 Difference]: With dead ends: 325 [2020-08-22 03:51:25,176 INFO L226 Difference]: Without dead ends: 284 [2020-08-22 03:51:25,177 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 [2020-08-22 03:51:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-22 03:51:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-22 03:51:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 03:51:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-22 03:51:25,204 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-22 03:51:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:25,204 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-22 03:51:25,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:51:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-22 03:51:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 03:51:25,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:25,206 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] [2020-08-22 03:51:25,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:51:25,206 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-22 03:51:25,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:25,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589116603] [2020-08-22 03:51:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 03:51:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:25,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589116603] [2020-08-22 03:51:25,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:25,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:51:25,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037274241] [2020-08-22 03:51:25,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:51:25,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:25,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:51:25,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:51:25,444 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-22 03:51:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:26,654 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-22 03:51:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:51:26,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-22 03:51:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:26,656 INFO L225 Difference]: With dead ends: 252 [2020-08-22 03:51:26,656 INFO L226 Difference]: Without dead ends: 211 [2020-08-22 03:51:26,657 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 [2020-08-22 03:51:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-22 03:51:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-22 03:51:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-22 03:51:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-22 03:51:26,674 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-22 03:51:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:26,674 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-22 03:51:26,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:51:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-22 03:51:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 03:51:26,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:26,676 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] [2020-08-22 03:51:26,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:51:26,676 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-22 03:51:26,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:26,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864531305] [2020-08-22 03:51:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 03:51:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:26,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864531305] [2020-08-22 03:51:26,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:26,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 03:51:26,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571676389] [2020-08-22 03:51:26,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 03:51:26,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 03:51:26,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:51:26,915 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-22 03:51:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:28,123 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-22 03:51:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:51:28,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-22 03:51:28,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:28,125 INFO L225 Difference]: With dead ends: 227 [2020-08-22 03:51:28,125 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 03:51:28,126 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 [2020-08-22 03:51:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 03:51:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 03:51:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:51:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-22 03:51:28,151 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-22 03:51:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:28,154 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-22 03:51:28,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 03:51:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-22 03:51:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:51:28,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:28,156 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] [2020-08-22 03:51:28,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 03:51:28,156 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:28,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-22 03:51:28,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:28,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230988362] [2020-08-22 03:51:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 03:51:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:28,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230988362] [2020-08-22 03:51:28,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:28,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:51:28,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409429392] [2020-08-22 03:51:28,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:51:28,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:51:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:51:28,390 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-22 03:51:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:29,208 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-22 03:51:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:51:29,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-22 03:51:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:29,211 INFO L225 Difference]: With dead ends: 296 [2020-08-22 03:51:29,211 INFO L226 Difference]: Without dead ends: 224 [2020-08-22 03:51:29,212 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 [2020-08-22 03:51:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-22 03:51:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-22 03:51:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-22 03:51:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-22 03:51:29,231 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-22 03:51:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:29,231 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-22 03:51:29,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:51:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-22 03:51:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:51:29,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:29,233 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] [2020-08-22 03:51:29,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 03:51:29,233 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-22 03:51:29,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:29,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116493470] [2020-08-22 03:51:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 03:51:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:29,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116493470] [2020-08-22 03:51:29,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:29,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:51:29,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292501265] [2020-08-22 03:51:29,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:51:29,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:51:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:51:29,452 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-22 03:51:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:30,387 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-22 03:51:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:51:30,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-22 03:51:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:30,391 INFO L225 Difference]: With dead ends: 232 [2020-08-22 03:51:30,391 INFO L226 Difference]: Without dead ends: 225 [2020-08-22 03:51:30,392 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 [2020-08-22 03:51:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-22 03:51:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-22 03:51:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-22 03:51:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-22 03:51:30,410 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-22 03:51:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:30,410 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-22 03:51:30,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:51:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-22 03:51:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:51:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:30,412 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] [2020-08-22 03:51:30,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 03:51:30,412 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-22 03:51:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:30,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276187977] [2020-08-22 03:51:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:51:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:51:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:51:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:30,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276187977] [2020-08-22 03:51:30,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:30,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:51:30,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230744696] [2020-08-22 03:51:30,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:51:30,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:30,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:51:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:51:30,595 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-22 03:51:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:31,288 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-22 03:51:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:51:31,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-22 03:51:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:31,290 INFO L225 Difference]: With dead ends: 258 [2020-08-22 03:51:31,291 INFO L226 Difference]: Without dead ends: 214 [2020-08-22 03:51:31,291 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 [2020-08-22 03:51:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-22 03:51:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-22 03:51:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-22 03:51:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-22 03:51:31,318 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-22 03:51:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:31,319 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-22 03:51:31,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:51:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-22 03:51:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:51:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:31,321 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] [2020-08-22 03:51:31,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 03:51:31,321 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-22 03:51:31,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:31,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772363022] [2020-08-22 03:51:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:51:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:51:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:31,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772363022] [2020-08-22 03:51:31,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:31,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 03:51:31,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625294836] [2020-08-22 03:51:31,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 03:51:31,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 03:51:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:51:31,683 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-22 03:51:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:32,859 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-22 03:51:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:51:32,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-22 03:51:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:32,861 INFO L225 Difference]: With dead ends: 226 [2020-08-22 03:51:32,861 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 03:51:32,862 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 [2020-08-22 03:51:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 03:51:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-22 03:51:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-22 03:51:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-22 03:51:32,879 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-22 03:51:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:32,880 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-22 03:51:32,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 03:51:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-22 03:51:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 03:51:32,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:32,881 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] [2020-08-22 03:51:32,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 03:51:32,882 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-22 03:51:32,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:32,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460027246] [2020-08-22 03:51:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:51:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 03:51:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 03:51:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:33,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460027246] [2020-08-22 03:51:33,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:33,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 03:51:33,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336915766] [2020-08-22 03:51:33,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 03:51:33,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:33,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 03:51:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:51:33,137 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-22 03:51:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:34,057 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-22 03:51:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:51:34,057 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-22 03:51:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:34,059 INFO L225 Difference]: With dead ends: 200 [2020-08-22 03:51:34,059 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 03:51:34,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:51:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 03:51:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-22 03:51:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-22 03:51:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-22 03:51:34,077 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-22 03:51:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:34,077 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-22 03:51:34,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 03:51:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-22 03:51:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 03:51:34,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:34,078 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] [2020-08-22 03:51:34,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 03:51:34,079 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-22 03:51:34,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:34,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556597736] [2020-08-22 03:51:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 03:51:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:51:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:34,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556597736] [2020-08-22 03:51:34,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 03:51:34,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973930024] [2020-08-22 03:51:34,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:51:34,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:51:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:51:34,330 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-22 03:51:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:35,463 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-22 03:51:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 03:51:35,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-22 03:51:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:35,466 INFO L225 Difference]: With dead ends: 237 [2020-08-22 03:51:35,466 INFO L226 Difference]: Without dead ends: 220 [2020-08-22 03:51:35,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-22 03:51:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-22 03:51:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-22 03:51:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 03:51:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-22 03:51:35,497 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-22 03:51:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:35,498 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-22 03:51:35,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:51:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-22 03:51:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 03:51:35,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:35,500 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] [2020-08-22 03:51:35,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 03:51:35,500 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-22 03:51:35,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:35,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781259704] [2020-08-22 03:51:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 03:51:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:51:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:35,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781259704] [2020-08-22 03:51:35,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:35,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 03:51:35,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667441869] [2020-08-22 03:51:35,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 03:51:35,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 03:51:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:51:35,864 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-22 03:51:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:36,702 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-22 03:51:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:51:36,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-22 03:51:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:36,704 INFO L225 Difference]: With dead ends: 206 [2020-08-22 03:51:36,704 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 03:51:36,705 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 [2020-08-22 03:51:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 03:51:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-22 03:51:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 03:51:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-22 03:51:36,719 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-22 03:51:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:36,719 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-22 03:51:36,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 03:51:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-22 03:51:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 03:51:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:36,720 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] [2020-08-22 03:51:36,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 03:51:36,721 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-22 03:51:36,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:36,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757969645] [2020-08-22 03:51:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:51:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:51:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 03:51:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:36,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757969645] [2020-08-22 03:51:36,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:36,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:51:36,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929951975] [2020-08-22 03:51:36,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:51:36,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:36,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:51:36,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:51:36,956 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-22 03:51:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:37,288 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-22 03:51:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:51:37,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-22 03:51:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:37,290 INFO L225 Difference]: With dead ends: 204 [2020-08-22 03:51:37,290 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 03:51:37,291 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 [2020-08-22 03:51:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 03:51:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-22 03:51:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 03:51:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-22 03:51:37,307 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-22 03:51:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:37,307 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-22 03:51:37,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:51:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-22 03:51:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 03:51:37,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:37,309 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] [2020-08-22 03:51:37,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 03:51:37,310 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-22 03:51:37,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:37,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882861290] [2020-08-22 03:51:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:51:37,356 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:51:37,356 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:51:37,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 03:51:37,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:51:37 BoogieIcfgContainer [2020-08-22 03:51:37,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:51:37,422 INFO L168 Benchmark]: Toolchain (without parser) took 27523.66 ms. Allocated memory was 138.9 MB in the beginning and 523.8 MB in the end (delta: 384.8 MB). Free memory was 100.2 MB in the beginning and 189.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 295.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:37,423 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:51:37,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.29 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.9 MB in the beginning and 176.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:37,431 INFO L168 Benchmark]: Boogie Preprocessor took 80.35 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 172.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:37,431 INFO L168 Benchmark]: RCFGBuilder took 967.99 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 102.1 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:37,432 INFO L168 Benchmark]: TraceAbstraction took 25913.84 ms. Allocated memory was 203.4 MB in the beginning and 523.8 MB in the end (delta: 320.3 MB). Free memory was 101.4 MB in the beginning and 189.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 231.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:37,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.29 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.9 MB in the beginning and 176.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.35 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 172.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 967.99 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 102.1 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25913.84 ms. Allocated memory was 203.4 MB in the beginning and 523.8 MB in the end (delta: 320.3 MB). Free memory was 101.4 MB in the beginning and 189.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 231.9 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: 4630 SDtfs, 6125 SDslu, 7817 SDs, 0 SdLazy, 16022 SolverSat, 1271 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, 4.8s 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: 0.0s SsaConstructionTime, 0.5s 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...